REST APIs are the interface between clients and servers that allows for data to be shared across platforms, providing a seamless connection between applications, databases, and other resources. A REST API Developer is the programmer who helps clients connect their applications to a certain platform and ensure data is flowing between the two in an efficient, secure manner. This can help to reduce friction, improve performance & scalability, boost security, streamline website navigation, and more.

REST API Developers build and maintain custom programming to enable automated data retrieval and communication with a client’s desired application or platform. This can encompass services such as quickly integrating third-party payment systems into an existing website, minimizing manual work and improving customer experience. They may also incorporate priority systems; for example creating different APIs for handling bulk vs single requests for heavy workloads. Ultimately a REST API Developer helps clients bridge the gap between complex platforms and transform data into valuable business insights.

Here’s some projects that our expert REST API Developers made real:

  • Establishing communication between different applications
  • Creating priority systems for managing large volumes of requests
  • Integrating third-party payment systems into an existing website
  • Developing programming to seamlessly retrieve dynamic data
  • Designing secure connections to protect confidential information

Our highly-skilled REST API Developers are experts when it comes to stitching together the critical links which connect disparate platforms together. With years of experience they have been able to tackle innumerable projects which have led to successful outcomes for our clients. If you have an issue related to connecting your application with another platform or require automated data retrieval services then you can post your own project here on Freelancer.com and hire one of our experienced developers today!

From 46,159 reviews, clients rate our REST API Developers 4.91 out of 5 stars.
Hire REST API Developers

REST APIs are the interface between clients and servers that allows for data to be shared across platforms, providing a seamless connection between applications, databases, and other resources. A REST API Developer is the programmer who helps clients connect their applications to a certain platform and ensure data is flowing between the two in an efficient, secure manner. This can help to reduce friction, improve performance & scalability, boost security, streamline website navigation, and more.

REST API Developers build and maintain custom programming to enable automated data retrieval and communication with a client’s desired application or platform. This can encompass services such as quickly integrating third-party payment systems into an existing website, minimizing manual work and improving customer experience. They may also incorporate priority systems; for example creating different APIs for handling bulk vs single requests for heavy workloads. Ultimately a REST API Developer helps clients bridge the gap between complex platforms and transform data into valuable business insights.

Here’s some projects that our expert REST API Developers made real:

  • Establishing communication between different applications
  • Creating priority systems for managing large volumes of requests
  • Integrating third-party payment systems into an existing website
  • Developing programming to seamlessly retrieve dynamic data
  • Designing secure connections to protect confidential information

Our highly-skilled REST API Developers are experts when it comes to stitching together the critical links which connect disparate platforms together. With years of experience they have been able to tackle innumerable projects which have led to successful outcomes for our clients. If you have an issue related to connecting your application with another platform or require automated data retrieval services then you can post your own project here on Freelancer.com and hire one of our experienced developers today!

From 46,159 reviews, clients rate our REST API Developers 4.91 out of 5 stars.
Hire REST API Developers

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    • Description We have a small Python script which needs to be put on the server-side as an API. Excluding the GUI code and comments, the script has about 750 lines. You will be given a VPS, which the API will allow downstream applications to call the engine for data comparison. We need multiple real-time endpoints for downstream applications. For testing purposes, we will set the maximum to 3 for now. Ultimately, it can be scaled to an unlimited number of real-time comparisons. I suppose we will have multiple copies of the comparison code on the same/different servers, but with three REST API endpoints. Hence, the Python script will be split into server and client-side code. As there are multiple data points to be compared with, we are thinking that the web app will first initiate...

    $178 Average bid
    $178 Avg Bid
    87 bids

    Role Overview: We are seeking an experienced Codebeamer Developer with strong expertise in ALM (Application Lifecycle Management), system configuration, and integrations. The ideal candidate will play a key role in designing, customizing, and optimizing Codebeamer solutions aligned with business and engineering requirements. Key Responsibilities: Design, configure, and customize Codebeamer ALM solutions Develop workflows, templates, trackers, and automation rules Implement and manage Codebeamer integrations with tools such as Jira, Git, DOORS, etc. Support requirements management, test management, and traceability Collaborate with cross-functional teams (Engineering, QA, Product, Compliance) Troubleshoot, optimize, and enhance system performance Participate in system upgrades and migratio...

    $5 / hr Average bid
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    11 bids

    I’m building CareSync, an AI-assisted medication manager that puts caregivers first. The goal is a seamless experience on both Android and the web where a single profile, stored in Firebase Firestore, keeps every prescription, reminder and adherence metric perfectly in sync. The stack is locked in: • Python Flask will expose a clean, versioned REST API. • Firebase Auth secures every call, and Firestore holds all structured data. • Android is written in Kotlin, following Jetpack best practices and a repository-pattern clean architecture. • A lightweight web dashboard (React, Flutter Web or another modern framework you’re comfortable with) should consume the same endpoints so information mirrors in real time. Core functionality I need you to deliver...

    $427 Average bid
    $427 Avg Bid
    37 bids

    We are looking for an experienced AI/Backend Engineer (or small team) to help design and implement a foundational setup for an enterprise “Agentic AI” goal is to enable a prompt-based interface where business users can ask questions and trigger actions across internal risk management and document systems through a governed API layer. This is NOT a chatbot UI project focuses on backend architecture, AI orchestration, and secure enterprise integration. Target application includes IBM OpenPages SaaS (GRC) accessed via REST APIs. The first phase will implement a proof-of-concept that allows an AI agent to retrieve and update structured records using approved APIs via a secure middleware service. Scope of Work (Phase-1: Foundational Setup) Build a secure middleware API servic...

    $104 Average bid
    $104 Avg Bid
    12 bids

    We’re hiring a strong full-stack developer for an ongoing role. You’ll start part-time and can move to full-time based on performance and fit. We are building an AI character platform and you’ll work on cutting-edge systems across: * AI image generation * AI text generation * Memory systems * RAG pipelines * Agentic workflows * Frontend and backend product development What You’ll Do * Maintain and improve our production + Laravel platform * Build features end-to-end (UI, APIs, data model changes) * Debug and resolve issues quickly with high reliability * Improve performance, quality, and system robustness * Collaborate on architecture and ship pragmatic solutions fast Non-Negotiables * Design quality is paramount: clean, polished, modern UX/UI execution * Bug-fr...

    $10 / hr Average bid
    $10 / hr Avg Bid
    199 bids

    Our MVP is live and stable; the only piece missing before launch is the licensing layer. I already have the logic mapped out for both geographical and categorical tiers, but I need the code that enforces those rules inside Odoo and keeps it in sync with our MEAN-based front end and the existing Python services. Here is what has to happen: • Build or extend an Odoo module that talks to our Node.js API, receives license-creation calls, and stores the resulting keys and usage limits. • Expose secure REST endpoints (or use RPC if you prefer) so the Angular front end can validate a license and retrieve project entitlements in real time. • Make sure the Python micro-services that run our billing routines can both read and write to the same licensing data, preventing race co...

    $1092 Average bid
    $1092 Avg Bid
    159 bids

    Position: Freelance Smart Contract / Blockchain Engineer Type: Contract / Freelance Location: 100% Remote Workload: Part-time or task-based Compensation: $60–$100/hour (or fixed-price per task) About the Project We are working on DeFi smart contract components, including token implementations and protocol-level logic. Our focus is security, clarity, and real-world usability — not hype. We are building a long-term freelancer pool and looking for engineers who can deliver clean, well-structured Solidity code independently. What You’ll Do Design and implement secure smart contracts using Solidity Work with EVM-compatible chains Review and improve existing smart contract code Follow best practices for documentation, testing, and security Collaborate asynchronously wi...

    $50 / hr Average bid
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    11 bids

    .NET Developer – Production Support & Evolutionary Maintenance We are looking for a .NET Developer to actively participate in technical support, evolutionary maintenance, and continuous improvement of production systems. This role combines incident resolution, analysis of existing systems, and the development of functional and technical enhancements, working on both standalone solutions and SaaS products used by real clients and operating on platforms with high operational impact. Required Technical Skills - Backend / Microsoft Platform - Strong knowledge of .NET Framework 4.8 or higher, with experience developing, maintaining, and improving applications in production environments - Experience with Entity Framework (Code First and/or Database First), including relationship han...

    $21 / hr Average bid
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    100 bids

    "Looking for a Chennai - India based Developer" We need an end-to-end system that lets my fitness club run smoothly while giving members a polished mobile experience. On the web side, the software must handle member management, class scheduling, and secure payment processing in one place so staff can sign people up, take bookings, and reconcile transactions without jumping between tools. For members, the native iOS and Android apps should mirror the web database in real time, allowing them to: • track individual workouts and see progress reports that pull from the same records staff view, • reserve or cancel classes instantly, and • follow personalised nutrition plans generated from the back-office portal. Whether you prefer Flutter, React Native, or fully s...

    $326 Average bid
    $326 Avg Bid
    90 bids

    I’m expanding an existing Laravel-based CRM that shares data with our WordPress marketing site, and I’m looking for a developer who can jump straight into feature work written in clean, modern PHP. Here’s what I need tackled first: • User management - Implement role-based access control so permissions can be adjusted from an admin panel. - Add editable profile pages that draw from our current users table without breaking WordPress log-ins. • Sales tracking - Build a visual sales pipeline view (stages drag-and-drop). - Generate performance analytics that show conversion rates and average deal size. - Integrate lead management: capture, assign, and move leads through the pipeline. • Customer support - A lightweight ticket or conver...

    $275 Average bid
    $275 Avg Bid
    86 bids

    I’m building a mobile-only app that needs a real-time text chat backend dedicated to one-on-one conversations. The goal is a lightweight, low-latency server that can authenticate users, deliver messages instantly, store chat history, and scale as the user base grows—all without the overhead of group or public room logic. I’m open to proven stacks such as Node.js with WebSocket/, Go with gRPC, or an equivalent solution that plays nicely with iOS and Android clients. End-to-end encryption, push-notification hooks (FCM / APNs), and a RESTful or GraphQL API for ancillary data are highly desirable. Deliverables • Production-ready server code with clear setup instructions • Secure user authentication and encrypted message transport • Message persistence (Mo...

    $478 Average bid
    $478 Avg Bid
    124 bids

    I’m building a new mobile application and I need a robust Java Spring Boot backend to power it. The core services you’ll create must cover: • User authentication and management with full multi-factor authentication (MFA) and support for future multi-party authentication flows. • A streamlined customer-onboarding journey that begins with registration and ends with a verified, fully profiled user record. • Reliable data storage and retrieval using a relational engine—MySQL or PostgreSQL, whichever you are most comfortable optimising. RESTful APIs should be documented with Swagger/OpenAPI, secured with JWT or a similarly strong token strategy, and thoroughly unit- and integration-tested. I’ll provide the mobile team’s contract-first API s...

    $7 / hr Average bid
    $7 / hr Avg Bid
    27 bids

    I run a Java-based restaurant management application and need it to talk seamlessly to both Swiggy and Zomato so that staff never have to re-enter data in multiple dashboards. The scope is straightforward: connect to each partner API, pull menus, push updates, receive orders instantly, and track every delivery milestone without manual refreshes. Real-time event handling (webhooks or long-polling, whichever the platforms allow) is essential so that kitchen screens and POS reports stay in sync second-by-second. Please deliver: • Menu synchronisation: create, update and deactivate items and modifiers from my app and reflect those changes on Swiggy and Zomato. • Order management: ingest new orders automatically, send accept/cancel actions, print kitchen tickets, and post order stat...

    $104 Average bid
    $104 Avg Bid
    25 bids

    Most of the core application is already live, but I need a reliable Python/Django developer who can step in quickly and bring the project to the finish line. Here is what I still need: • Add new features that plug smoothly into the current codebase. • Polish and extend existing functionality so workflows feel seamless for end-users. • Track down and fix the lingering bugs we’ve logged. • Refresh selected user-interface screens while keeping the existing design language. • Tweak backend logic where necessary to support the updated UI. The stack is pure Python/Django, so deep familiarity with Django models, views, templates, DRF, and common third-party packages is essential. You should also be comfortable working in Git, writing clear commit messages,...

    $292 Average bid
    $292 Avg Bid
    56 bids

    I need a straightforward Android application that lets my customers send money to me by bank transfer. After signing up or logging in with the classic username-and-password flow, a user should be able to choose an amount, see (or pre-fill) my banking details, and push the payment through an integrated bank-transfer API. Security is critical, so the credential flow must be encrypted end-to-end and the transfer requests signed or otherwise verified to prevent tampering. A lightweight backend—REST or Firebase Cloud Functions is fine—can manage authentication, session tokens, and payment-status webhooks. Please deliver: • Full Android Studio project (Java or Kotlin) • Secure username/password authentication flow • Bank-transfer API integration with success/...

    $132 Average bid
    $132 Avg Bid
    36 bids

    I need a complete Android-based point-of-sale application that can be rebranded for different clients. All source code must be handed over so my team can swap logos, splash screens, and basic colour accents without touching the underlying logic. Core workflow requirements are straightforward: process walk-in sales smoothly, keep real-time inventory counts accurate, store essential customer details for repeat business, and generate clear on-screen and printable bills. The interface should feel classic and simple—think tidy screens, large touch targets, and minimal ornamentation—yet leave room for our logo and a primary brand colour. The build has to expose at least one clean way to push daily summaries to external accounting software (REST, webhook, or a small middleware modul...

    $347 Average bid
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    22 bids

    Mores What functionality do you want the Telegram bot to have? bot que gestione una base de datos de usuarios y realice peticiones HTTP, Automaticas, API-based integration with external game servers (Unity/JSON). No standard SQL ¿Qué tipo de base de datos te gustaría usar? SQL ¿Qué tipo de peticiones HTTP debe realizar el bot automáticamente? The bot requires standard REST API methods (GET, POST, PUT) to interact, interact with JSON-based endpoints and handle authentication headers.

    $173 Average bid
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    57 bids

    Project Overview Project Name: School Student Attendance System Goal: Build a system that allows teachers/staff to mark student attendance (possibly with location/time), notifies parents via push notifications when the student is ready for pickup or has been picked up, enables parents to confirm/view status, and handles basic student/parent/teacher data. Architecture: • Mobile App (Teachers / Parents) • Oracle APEX Backend (Admin / Reports / APIs) • Oracle Database Duration: 2 Months (8 Weeks) System Architecture 1) Mobile Application Users: • Teachers → mark attendance and deliver students • Parents → Students receive and students tracking. • Security → deliver students (optional) Features: • Login • Class & student list •...

    $1305 Average bid
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    232 bids

    I have a production mobile app built in Flutter that now needs two things at once: a smooth migration to React Native and a fully-featured AI layer. The current codebase performs “average”—solid, but far from the speed, maintainability, and user delight I want to reach. Here’s what I need from you: • First, review the existing Flutter project and outline a clean, low-risk migration path that keeps both iOS and Android parity. • While migrating, weave in a new AI layer that boosts user experience, adds meaningful functionality, and sharpens overall performance. I’m interested in API-based models that support chat-style assistance and data-driven recommendations; prompt design and runtime optimisation will be part of the job. • Once the Reac...

    $10 / hr Average bid
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    76 bids

    I’m ready to move beyond notebooks and actually ship models, but I’d like to do it the right way, step by step, with an expert by my side. My stack of choice is Python, and we’ll be working on Google Cloud. The part I’m most eager to master is model serving and building production-grade APIs, though I still want you to frame everything in an end-to-end workflow so the pieces fit together. Here’s how I picture our work together: • Pair-programming sessions where we containerise a trained model, push it to Google Cloud (e.g., Cloud Run or Vertex AI), and expose it through a REST or gRPC endpoint. • Walk-through of best practices for versioning, environment management, and automated CI/CD so each new model can be rolled out with minimal friction. ...

    $21 / hr Average bid
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    101 bids
    Restaurant and Retail POS
    5 days left
    Verified

    I’m looking for an experienced developer/team to build a complete offline-first POS platform that runs reliably on a local network (LAN). The system must keep working when the internet is down, but also support optional online features for some customers (e.g., cloud reporting, multi-site reporting, remote backups, and online ordering integrations). In short: offline by default, online when needed. Two product modes in one codebase A) Hospitality (Restaurant / Bar) Windows POS touchscreen: tables & floorplan, open tickets, split/merge/move, void/refund, discounts, VAT/tax rules Android handheld ordering (PWA or native): fast ordering per table, live sync with POS + KDS, offline queue + retry KDS (Kitchen Display System): new → preparing → ready, station routing (kit...

    $9476 Average bid
    NDA
    $9476 Avg Bid
    148 bids

    أرغب في تنفيذ تطبيق ‎iOS‎ تعليمي يعمل بكفاءة كاملة سواء كان الجهاز متصلاً بالإنترنت أو لا. أحتاج إلى شريك تقني يقود المشروع من الصفر: هندسة البنية الخلفية، تصميم ‎UI/UX‎، البرمجة، ثم الاختبار والتسليم النهائي مع الكود المصدري. التطبيق يجب أن يدعم العربية والإنجليزية، ويُصمَّم وفق مبدأ ‎offline-first‎ مع مزامنة فورية حال توفر الشبكة ليظل صالحاً للمستخدمين في المناطق منخفضة الاتصال. أتطلع إلى بنية قوية قابلة للتوسّع تخدم ملايين المستخدمين مستقبلاً، مع إمكان إضافة منصّات أخرى (Android والويب) لاحقاً دون إعادة كتابة جوهر النظام. التجربة التعليمية ينبغي أن تتضمن وسائط متعددة، اختبارات تفاعلية، تتبّع تقدّم، وإشعارات ذكيّة تعيد المستخدم إلى المحتوى المناسب. أفضل اعتماد تقنيات حديثة مثل SwiftUI على الواجهة وCore Data/Realm لطبقة التخزين، مع واجهة إدارة مبنية على ‎REST&...

    $217 Average bid
    $217 Avg Bid
    15 bids

    I need a full-stack developer who can turn a straightforward informational concept into a polished, responsive web application. The site will be open to the general public for browsing, while registered users will enjoy additional authenticated features. You are free to choose between a Python (Flask) or Node.js backend, but please keep MongoDB as the data store. On the front end, I expect clean, semantic HTML, modern CSS for a crisp UI, and JavaScript to keep interactions smooth. The back end should expose well-structured RESTful routes that handle basic authentication along with standard CRUD actions. Whether you pick Flask with Jinja templates or a Node/Express stack with a preferred view layer, the code must remain clear, modular, and fully documented so another developer can step in ...

    $542 Average bid
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    70 bids

    Android CameraX & API Integration (We have 80% of the code logic ready - No R&D needed) We are looking for an experienced Android Developer to build a technical prototype (MVP) focused on real-time image processing for a Huawei P10 device. IMPORTANT: We are not reinventing the wheel. We have already completed the research phase. We will provide you with: 1. The Official SDKs and Documentation needed for the project. 2. Reference Code (80% of the logic): We have identified specific open-source samples (Google Samples) that already handle the image capture and API request logic. Your job is NOT research. Your job is to assemble these existing pieces into a stable background service and optimize it for the target device. Project Scope: Create a lightweight Android application that r...

    $162 Average bid
    $162 Avg Bid
    56 bids

    We are looking for an experienced Microsoft 365 specialist to design and implement an automated SharePoint-based data room template using SharePoint Online and Power Automate. The objective is to create secure, repeatable “virtual data room” environments with structured document indexing, automated numbering, audit logging, permission controls, and administrative workflows. All in a manner that can be managed by the internal IT team post implementation. Please note that some manually created data rooms are already in place and we would ideally want this work to improve on what has already been done. Scope of Work: 1. SharePoint Data Room Configuration • Build and configure SharePoint Online sites to function as secure data rooms based on existing data room sites. • ...

    $3101 Average bid
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    29 bids

    Emails hit our dedicated sales inbox every day and I want them turned into ready-to-use quotes inside MYOB Advanced (Acumatica) without re-typing a single line. From each message—whether it arrives as simple text or rich HTML—the interface must reliably read the email and interpret the content mapping it to data such as item detail, customer information contained within MYOB. Once those fields are captured, the tool should offer two modes. In automatic mode it calls the MYOB Advanced API and creates the quote immediately. In review mode it presents the parsed data in a clean pane or file so a user can double-check, adjust if needed, and then push the same “create” call manually. A setting or flag that toggles between the two behaviours will be fine. I already have...

    $43 / hr Average bid
    NDA
    $43 / hr Avg Bid
    66 bids

    The project revolves around expanding and maintaining a WooCommerce-based multi-vendor marketplace over an extended period. Our Offer 1. You must fully customise our theme. 2. You will receive a $75 aud. 3. You will receive $X Fee from every new sale for the 3 years 4. You must Manage and Maintain the site 24/7 X365 days 5. You must guarantee UNLIMITED REVISIONS for your work. 6. Some coding required. Primary scope I need the multi-vendor layer built and refined, starting with a solid vendor dashboard that lets sellers manage products, view orders, and track basic analytics without ever touching the WordPress back-end. Clean UI/UX, mobile-responsive design, and role-based access are essential. Day-to-day work will include: • Selecting, c...

    $7 Average bid
    $7
    22 entries

    Most of the core application is already live, but I need a reliable Python/Django developer who can step in quickly and bring the project to the finish line. Here is what I still need: • Add new features that plug smoothly into the current codebase. • Polish and extend existing functionality so workflows feel seamless for end-users. • Track down and fix the lingering bugs we’ve logged. • Refresh selected user-interface screens while keeping the existing design language. • Tweak backend logic where necessary to support the updated UI. The stack is pure Python/Django, so deep familiarity with Django models, views, templates, DRF, and common third-party packages is essential. You should also be comfortable working in Git, writing clear commit messages,...

    $307 Average bid
    $307 Avg Bid
    52 bids

    I’m putting together a clean, developer-ready set of API docs for two IPTV panels—XtreamUI and NXT Dash—and I still need reliable, up-to-date material. XUI is already covered on my side, so please focus only on the panels named above and feel free to add any other panel you already have solid references for. What I expect to receive for each panel: • Authentication flow explained step-by-step, including tokens, cookies or keys used • At least one working example request and the full JSON/XML response for the key calls (user login, playlist retrieval, stats, etc.) PDF, Markdown or a Postman/Insomnia collection is fine; clarity is what matters most. I’ll verify by importing your examples and running them against a test server, so the samples need to be com...

    $128 Average bid
    $128 Avg Bid
    57 bids

    Overview: We’re looking for an experienced SuiteCRM developer/designer to help us customise a new SuiteCRM 8.9 installation for our sales team. The goal is to create a modern, user-friendly CRM interface that matches our visual designs and delivers a smooth, efficient experience similar to and Zoho CRM. Key Objectives: • Install SuiteCRM 8.9 on our web server (latest version). • Build a custom SuiteCRM theme (no prebuilt themes) to match our provided designs. • Streamline the sales process: intuitive in-line edits, pop-up windows, quick lead management that matches the visual styling of and Zoho CRM. • Develop and refine multiple modules • Integrate with Google Calendar (2-way), email sync, and lead enrichment APIs (, Apollo, , etc.). • Implement dupl...

    $312 Average bid
    $312 Avg Bid
    36 bids

    Full Time position E-commerce Company US Tampa HQ Remote Responsibilities: Odoo 18 Development: Architect and develop custom modules, themes, and features specifically for the Odoo 18 environment. Web & Portal Optimization: Design and implement responsive, user-friendly web pages and portals using OWL, QWeb, and SCSS. System Integration: Build and maintain REST APIs to connect Odoo with third-party logistics, payment gateways, and marketing tools. Performance Tuning: Optimize database queries (PostgreSQL) and front-end performance to ensure high-speed user interactions. Technical Leadership: Lead version upgrades, refactor legacy code, and establish best practices for version control using Git. Technical & Qualifications: 5+ years of professional experience in Odoo development ...

    $13 / hr Average bid
    $13 / hr Avg Bid
    67 bids

    I need this whole UI templated to be working with all teh configa nd best practise.

    $333 Average bid
    $333 Avg Bid
    53 bids

    We’re expanding the next round of services at Inboxlogy, and we’re looking for a freelance backend developer to help us build new features on top of our existing application. About Inboxlogy, Inboxlogy helps businesses grow 10X faster by setting up scalable email outreach infrastructure and providing cost-effective deliverability solutions. Our core system is already built — now we’re enhancing it with new modules and advanced functionality. What You’ll Work On You’ll be responsible for backend feature development and system enhancements, including: * Building and enhancing REST APIs using Java + Spring Boot * Designing scalable business logic and service layers * Working closely with the front-end team to support new features * Integrating with MongoD...

    $99 Average bid
    $99 Avg Bid
    31 bids

    I need our ServiceNow instance to automatically open incidents every time Dynatrace raises a problem. The goal is simple: as soon as Dynatrace detects performance degradation, a service outage, or an application error, a properly populated incident must appear in ServiceNow with no human intervention. Here is what I expect: • One-way integration: Dynatrace is the sole trigger. • Use native capabilities first (Dynatrace problem notifications, ServiceNow REST API) before custom code. • Map Dynatrace problem fields to the correct ServiceNow incident attributes (category, impact, urgency, assignment group, short description, full problem JSON in the work notes). • Prevent duplicate tickets while a problem remains open; update or resolve the existing record when Dyna...

    $40 Average bid
    $40 Avg Bid
    7 bids
    Real-Time POS Inventory Sync
    4 days left
    Verified

    I need a small middleware service that can pull live inventory levels from a third-party POS platform (it’s not Shopify, Square, or Lightspeed—so please be comfortable discovering or reverse-engineering a different API or database schema). The single purpose is to keep my own server in sync with whatever is on the POS in real time. Here’s what the job looks like from my side: • Goal Every sale or stock adjustment in the store should trigger, or at least very quickly reflect, a quantity update on my server so the numbers stay accurate across all of my channels. • Flow I’m picturing 1. Authenticate to the POS (REST, GraphQL, WebSocket, direct DB—whatever the platform offers). 2. Detect inventory changes continuously—ideally through a web...

    $282 Average bid
    $282 Avg Bid
    23 bids

    We are building a service marketplace mobile application (similar concept to UrbanClap / Ola / Uber for services) where users can book nearby service providers such as plumbers, electricians, cleaners, healthcare attendants, etc. We are looking for an experienced React Native App Developer / Team who can develop the complete mobile app ecosystem along with backend integration. Development of two separate mobile apps: User App Service Provider App With one centralized backend & admin panel. User App Features • User Registration & Login (OTP / Email) • Profile creation & management • Location detection (Auto + Manual) • Nearby service provider listing • Service booking system • Live service tracking (Map based) • In-app chat with provid...

    $215 Average bid
    $215 Avg Bid
    65 bids

    Most of the core application is already live, but I need a reliable Python/Django developer who can step in quickly and bring the project to the finish line. Here is what I still need: • Add new features that plug smoothly into the current codebase. • Polish and extend existing functionality so workflows feel seamless for end-users. • Track down and fix the lingering bugs we’ve logged. • Refresh selected user-interface screens while keeping the existing design language. • Tweak backend logic where necessary to support the updated UI. The stack is pure Python/Django, so deep familiarity with Django models, views, templates, DRF, and common third-party packages is essential. You should also be comfortable working in Git, writing clear commit messages,...

    $169 Average bid
    $169 Avg Bid
    81 bids
    AI deployment with Backend
    3 days left
    Verified

    I need to design the workflow for an LLM orchestrator, integrating with various systems. It should call the customer master DB and policy admin to identify existing clients or handle new quotes. For new cases, I'll clearly differentiate based on line of business (P&C personal auto, commercial, travel, life Insurance) . I'll focus on setting up the necessary infrastructure, models, vector DB, middleware, and PoC milestones. Citations will be needed . I’ll ensure everything fits within the architecture, including tool-calling patterns and structured forms. Here’s a concrete, LOB aware architecture you can actually brief to a dev partner or internal team. I want to embed an end-to-end AI layer into my insurance website that can greet visitors, guide them through quo...

    $556 Average bid
    $556 Avg Bid
    98 bids

    I’m building a browser-based stock management platform and I’d like it developed with the classic MERN-style pairing of React (frontend) and Express with PostgreSQL (backend and database). The system will be accessed externally by both Suppliers and Customers, so clean, responsive UI components and a secure REST API are essential. Core scope The application must let us track inventory in real time, move orders through their full life-cycle, and surface clear reporting and analytics dashboards. Three permission tiers will exist—Admin, Manager, and Viewer—each seeing only the screens and actions appropriate to their role. Tech expectations React 18 with functional components and hooks, Express 4+, PostgreSQL 14+ with well-structured schemas, and JWT-based authen...

    $2054 Average bid
    $2054 Avg Bid
    107 bids

    I need someone to help me setup a system to manage accounts. I do have a gps tracking system where we charge clients monthly a fee to use the system. Some clients have multiple login account, these need to be grouped together so when a client dont pay we dont close 1 and miss to close the others and he will keep tracking on other account. We receive cash payments, swipe and bank transfer. We use freshbooks to process payments and based on open invoices we close accounts on my server website. I need someone to help me with creating a system to manage things and maybe help me keep in track of new clients and existing clients. Maybe create something or a website or somehow a way to keep informations accurate

    $146 Average bid
    $146 Avg Bid
    82 bids

    This project is a new social networking platform that needs end-to-end development on the MERN stack. The goal is to deliver a scalable, secure web application where users can create accounts, interact in real time and consume dynamic content. Core work spans the full stack: designing MongoDB collections, building an Express/Node.js backend with REST or GraphQL endpoints, and crafting a responsive React front-end. Real-time features (chat or live updates) should leverage or a comparable solution. Clean, well-commented code in a Git repository and deployment to a staging server are essential. Deliverables: • MVP deployed to a test server with sign-up/login and editable user profiles • Documented API plus a concise README for local setup • Two weeks of post-launch...

    $923 Average bid
    $923 Avg Bid
    42 bids

    More details: What is the primary goal of your performance testing? Check load capacity How many concurrent users should the JMeter scripts simulate? Up to 100 users What types of REST API calls do you need to test? GET requests, POST requests, PUT/DELETE requests

    $20 Average bid
    $20 Avg Bid
    16 bids

    I am commissioning a bilingual iOS application—Arabic first, English second—that delivers live Bitcoin and selected-coin data with a professional, sleek interface entirely in Swift and SwiftUI. The app’s core revolves around real-time price feeds, historical price charts, and razor-sharp alerts that keep users ahead of major market moves. Arabic users will enjoy a true RTL layout, while English users see a standard LTR presentation, all driven by Apple’s native localization tools. Key functionality I need implemented: • Current price updates streamed from a reliable REST source • Historical price charts for deeper context • Push notifications for major price changes via Firebase Cloud Messaging • In-app alerts that surface whale activity...

    $2512 Average bid
    $2512 Avg Bid
    132 bids
    Resolve Flutter Signup Issue
    3 days left
    Verified

    I need a sharp-eyed Flutter / Node.js troubleshooter to pinpoint and fix an intermittent signup failure in my mobile app. The OTP step completes successfully, yet many users (on both iOS and Android) hit a wall when the form tries to create the account. No explicit error is returned to the UI, but the account never appears in the database. Here is what I can share right away: • Front end: Flutter 3.x, using MSG91 for phone-based OTP. • Back end: Node.js (Express) REST API, MongoDB. • Flow: user enters phone → receives OTP → OTP verified → form posts profile details → failure occurs after the POST. What I need from you is a fast, reproducible diagnosis, a clean code fix (whether in Dart, the REST endpoint, or both), and a short hand-off note so my te...

    $139 Average bid
    $139 Avg Bid
    47 bids

    I want to develop an iPhone application using SwiftUI that allows users to download videos from social media platforms, including: Twitter (X) Instagram TikTok YouTube Core Features Clean, modern, and minimal SwiftUI design Input field to paste the video URL Fetch available video qualities (e.g. 720p, 1080p, audio only) Download progress indicator Background download support Save videos to the device (Photos / Files) Error handling for invalid or unsupported links Technical Requirements Built with SwiftUI iOS 16+ MVVM architecture Async/Await networking Proper permission handling for media storage API / Backend Integration The app should integrate with one of the following tools/APIs: Option 1: Use Social Media Downloader API Option 2: Use yt-dlp as a backend service...

    $180 Average bid
    $180 Avg Bid
    84 bids

    I am developing an end-to-end platform that pulls live claim-related data from Revit models, runs it through a FIDIC rules engine, and then immutably stores and certifies every step on Hyperledger Fabric. The objective is clear: the moment a potential claim is flagged in the BIM environment, it should be automatically registered, classified, validated against the relevant FIDIC clauses, and published to an auditable ledger—with a web dashboard showing the entire trail in real time. Scope of work • BIM connector: a service that extracts the necessary objects, properties, and metadata directly from Revit (IFC compatibility is a plus) and hands them to the API. • Integration backend (API): a lightweight, well-documented REST/GraphQL layer focused on automated workflows&md...

    $256 Average bid
    $256 Avg Bid
    95 bids

    We’re Hiring Web Developers DJ Technologies LTD is looking to hire 2 skilled Web Developers to join our growing development team. Key Responsibilities & Requirements: • Strong knowledge of HTML, CSS, JavaScript • Experience with frameworks/CMS such as React, Laravel, or WordPress • Ability to write clean, efficient, and scalable code • Strong problem-solving and communication skills Join us and be part of a team delivering high-quality digital solutions. Company LinkedIn Profile: Regards, DJ Technologies LTD

    $1958 Average bid
    $1958 Avg Bid
    70 bids

    I need a cloud-based Payment collection app that lets my staff and customers settle invoices through UPI AND CASH while also giving us the option to record UPI, Cash, Cheque receipts in one place. Think of it as a lightweight, multi-tenant service we can log into from any browser or phone, issue a payment link or on-screen QR, mark physical cash or cheque as “received”, and instantly see it reflected in a consolidated dashboard. Core flow • A customer or field agent chooses UPI, Cash, or Cheque. • For UPI we present a dynamic QR or intent link and verify the callback. • Cash and cheque entries let the user capture amount, payer, reference photo, and status (for cheques: pending, cleared, bounced). • Every transaction updates real-time reports, sends...

    $1605 Average bid
    $1605 Avg Bid
    54 bids

    I have an informational web application to be built and prefer to work with freelancers who are already based in Bengaluru so we can easily align on occasional in-person discussions and faster iterations. The project centres on a clean, responsive site that presents curated content rather than e-commerce or social networking features. Core requirements include: • Front-end: modern, component-based framework (React, Vue or similar) with SSR or strong SEO support. • Back-end: lightweight REST or GraphQL service, preferably in Node.js or Python, with clear separation of concerns and straightforward deployment to a standard cloud stack (AWS, GCP or Azure—whichever you are most comfortable with). • CMS or admin interface that lets non-technical staff update text, imag...

    $11 / hr Average bid
    $11 / hr Avg Bid
    46 bids

    I need an Android social-networking app built from scratch. The core idea is a clean, modern platform where users can register, create profiles, add or follow friends, share text-photo-video posts in a scrolling feed, chat in real time, and receive push notifications. A lightweight admin panel for content moderation is also required. Please deliver: • Full Android Studio project (Kotlin preferred, Java acceptable) with well-commented source code • REST or Firebase backend setup, documented and ready for deployment • Brief UX prototype early in the process and a functional MVP roughly six weeks from kickoff • Clear installation guide and API documentation so I can extend or port it to iOS later Material Design guidelines should steer the UI. I’m happy to su...

    $10 / hr Average bid
    $10 / hr Avg Bid
    47 bids

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