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6.2
6.2
100%

Sawai Madhopur, India
$10 USD per hour
7+ years building stable, secure web applications for startups and enterprises. Whether you're launching a new product, rescuing a broken codebase, or scaling an existing system, I write clean, tested code and communicate clearly from start to finish. What I do Full-stack web apps and websites — front-end to back-end REST APIs, microservices, and secure backend services Bug fixes, performance tuning, and legacy code refactoring Database design and integration (SQL & NoSQL) Cloud-ready deployment with Docker & Kubernetes AI-powered features — automation, chatbots, and smart integrations Core stack: Java & Spring Boot · React / Next.js / Angular · Apache Kafka · GraphQl · Microservices · Docker & Kubernetes · JUnit/Mockito testing Why clients stay: Clear communication, scalable architecture, on-time delivery, and long-term support when you need it. Send me your project details and I'll reply with a clear plan and honest timeline.

9.9
9.9
90%

Machakos, Kenya
$50 USD per hour
As a software architect and Python developer with 10+ years of experience, I design and deliver full-stack, high-performance crypto trading automation systems for both individuals and organizations. Notable project: 10xTraders.ai – a fully cloud-native, multi-user crypto trading platform that supports strategy generation, live trade execution, smart notifications, user dashboards, and automated scaling, integrating TradingView charts and custom AI modules. My expertise includes: Strategy Engine Development: Design, testing, and deployment of custom and modular trading strategies (momentum, DCA, grid, arbitrage, trend-following, mean reversion, risk management overlays, etc). Exchange Integrations: Multi-exchange (Binance, Bybit, KuCoin, Coinbase, OKX, and more) spot, margin, and derivatives connectivity, robust error handling, and seamless authentication. Backtesting & Simulation: Fast, accurate historical and forward backtesting engines; optimization tooling; walk-forward analysis; metric dashboards. Automated Live Trading: Real-time execution, position sizing, dynamic stoploss/TP, risk management, error recovery, and live trade monitoring. Signal & Webhook Handling: Integration with TradingView, Telegram, Discord, email alerts; advanced webhook processors; custom event triggers. Trading Terminal UI: Web-based terminals for trade monitoring, live logs, analytics, and order management; deep TradingView chart integration; responsive dashboards. AI/ML-Driven Trading: Custom modules for signal generation, position management, and adaptive strategy optimization with machine learning. Portfolio Management: Multi-asset and multi-strategy allocation, wallet/rebalancing, cross-exchange tracking, P&L and risk statistics. Notification & Reporting: Real-time logging, alerting (web, mobile, email, Telegram), performance reporting, and alerting for trade state, errors, fills, or margin events. Cloud & DevOps: Docker, Kubernetes, Helm, NGINX, automated CI/CD pipelines, secure API exposure (REST/WebSockets), volume scaling for thousands of concurrent users. User & Multi-Tenancy: Auth, multi-user session management, isolated deployments, and secure separation for hosted trading platforms. API & Bot Management: REST/WebSocket APIs for strategy control, trade monitoring, status queries, bot lifecycle (spawn/stop/clone/update) at scale. Config & Secrets Handling: Secure, dynamic config management (YAML, JSON), secrets vaults, role-based access, per-user exchange keys. Deployment: Production experience with Linux, bare metal, AWS, GCP, DigitalOcean, Hetzner, OVH; scaling to global audiences. I combine technical rigor, creative engineering, and a passion for clean, robust code to deliver trading solutions that are powerful, resilient, and user-friendly. I’m ready to build and run your next-generation crypto trading or automation platform—end-to-end, from strategy to cloud!

6.0
6.0
100%

Karachi, Pakistan
$25 USD per hour
Techno Tweak is a full-service digital technology company helping businesses turn ideas into high-performing websites, applications, software, eCommerce platforms, and digital experiences. We don’t believe in overwhelming clients with endless technology names. We focus on understanding your goals, choosing the right technology, and delivering a solution that is fast, scalable, secure, and easy to use. 🌐 Web & eCommerce We design and develop business websites, high-converting landing pages, eCommerce stores, SaaS platforms, marketplaces, portals, and custom web applications using WordPress, WooCommerce, Shopify, Webflow, Wix, Squarespace, PHP, Laravel, React, Next.js, Node.js, Vue.js, and more. 📱 Mobile & Software Development From customer-facing mobile apps to complete business systems, we build iOS, Android, cross-platform, and custom software solutions. Our expertise includes React Native, Flutter, Swift, Kotlin, Python, Django, APIs, databases, CRM, ERP, POS, LMS, booking, inventory, and management systems. 🎨 UI/UX & Creative Design We create modern, conversion-focused digital experiences through Figma, UI/UX design, wireframes, prototypes, branding, logos, illustrations, social media designs, brochures, banners, animations, motion graphics, and marketing creatives. 🤖 AI & Automation We help businesses use AI to save time and create better experiences through AI chatbots, AI agents, OpenAI integrations, generative AI, computer vision, intelligent automation, custom AI applications, n8n, Zapier, and API-based workflows. 🔗 Integrations & Business Automation Connect your tools and eliminate repetitive work. We integrate payment gateways, CRMs, ERPs, marketing platforms, communication tools, analytics, maps, cloud services, and third-party APIs including Stripe, PayPal, Twilio, Google APIs, HubSpot, Zoho, Salesforce, Odoo, Xero, Airtable, and more. ☁️ Cloud, Hosting & Performance We handle deployment, hosting, cloud infrastructure, databases, security, monitoring, and optimization using AWS, Azure, Google Cloud, Docker, Linux, Nginx, Cloudflare, MySQL, PostgreSQL, MongoDB, and other modern technologies. 🚀 SEO, Marketing & Growth A great website needs visibility and performance. We provide technical SEO, SEO audits, on-page optimization, local SEO, Google Ads, analytics, conversion optimization, content marketing, email marketing, social media marketing, and site speed/Core Web Vitals optimization. 🛡️ Testing & Ongoing Improvement We test and optimize websites, applications, APIs, and mobile products for performance, usability, accessibility, security, compatibility, and reliability. Whether you’re starting from scratch, improving an existing product, or solving a technical challenge, Techno Tweak is ready to help. Send us your requirements and let’s turn your idea into something that works.

3.8
3.8
83%

Bacoor, Philippines
$25 USD per hour
I provide high quality web, mobile, and software development services for startups, small businesses, and enterprise-level organizations. My expertise covers end-to-end product development from UI/UX and frontend engineering to backend architecture, cloud deployment, agentic AI systems, OpenClaw workflows, and emerging technologies. Technical Expertise AI, Agentic Systems & OpenClaw ⩥ Design and build production-grade agentic AI systems using frameworks such as CrewAI, LangGraph, LangChain, and OpenClaw with Think → Plan → Execute architectures for real-world automation ⩥ Architect multi-agent workflows where specialized agents collaborate, delegate, and coordinate across complex business processes ⩥ Develop intelligent orchestration pipelines that combine LLMs, APIs, tools, and external services into unified, decision-making systems ⩥ Implement stateful agent graphs with LangGraph for branching logic, retries, human-in-the-loop checkpoints, and long-running task execution ⩥ Build role-based agent crews with CrewAI for research, analysis, content generation, operations, and domain-specific automation ⩥ Create context-aware agents with memory, task routing, tool selection, and multi-step reasoning for complex, real-world operations ⩥ Integrate ChatGPT / OpenAI APIs and other LLMs to power conversational systems, automation engines, and decision-support tools ⩥ Build scalable RAG pipelines (vector search, embeddings, knowledge retrieval) to ground agents in domain-specific intelligence ⩥ Develop autonomous and semi-autonomous systems for task execution, monitoring, evaluation, and continuous optimization ⩥ Build AI copilots for SaaS platforms, internal tools, and customer-facing applications ⩥ Design prompt engineering frameworks, structured outputs, and guardrails for reliable, production-grade agent behavior ⩥ Integrate agentic systems with cloud infrastructure (AWS, serverless, databases) for persistent, observable, and scalable operations ⩥ Focus on performance, reliability, observability, and real business impact—not just experimentation Web & Frontend Development ⩥ React.js, Next.js, Angular, Redux, React Flow, JavaScript, TypeScript, HTML5, CSS3, TailwindCSS Backend & API Development ⩥ Node.js, Express.js, Python, Django, Flask, FastAPI, REST API, GraphQL Mobile Development ⩥ Flutter/Dart, FlutterFlow, Hybrid/Native apps, Android, iOS, Firebase Cloud, DevOps & Infrastructure ⩥ AWS, Azure, Google Cloud, Docker, CI/CD, Nginx, Serverless architecture Databases ⩥ MongoDB, PostgreSQL, MySQL, Firebase, Redis I deliver scalable, secure, and maintainable solutions with a strong focus on clean code, performance, and user experience. Whether you need a complete product built from scratch, improvements to an existing system, or long-term technical support, I bring a reliable, results-driven approach to every project.

3.5
3.5
100%

Piscataway, United States
$25 USD per hour
Quantum Code Solutions | Premier Mobile, Web, CRM, SaaS, and Game Development Agency Welcome to Quantum code Solutions, where innovation meets expertise. We specialize in delivering top-notch solutions in Mobile App Development, Web Applications, CRM Systems, SaaS Platforms, and Game Development. Our team combines creative vision with technical mastery to build scalable, high-performing digital products that drive success. Our Core Services: 1. Mobile App Development & Publishing We create feature-rich, high-quality mobile apps for iOS and Android using frameworks like React Native, Flutter, Swift, and Kotlin. From initial concepts to app publishing, we guide you every step of the way, ensuring seamless deployment to the App Store and Google Play. 2. Web App Development & Design Our custom web applications are built for performance, scalability, and security using advanced technologies like React.js, Next.js, Vue.js, Nuxt.js, PHP, Laravel, and Node.js. We prioritize responsive design and intuitive interfaces to elevate user experiences. 3. CRM Development & Management Streamline your operations and enhance customer interactions with our tailored CRM solutions. We design systems that integrate effortlessly into your existing processes, driving efficiency and growth. 4. SaaS Development We build powerful, scalable SaaS platforms using leading technologies like MERN, MEAN, PERN, and MEVN stacks. Our focus is on creating efficient, user-friendly applications that deliver seamless performance. 5. Game Design & Development From immersive 2D/3D game design to AR, VR, and Metaverse experiences, we craft engaging gaming solutions using Unity and Unreal Engine. We also specialize in interactive kiosks and gamified experiences across platforms. 6. AR/VR and Metaverse Development Enter the future with our cutting-edge AR, VR, and Metaverse solutions. Whether it’s virtual storefronts, AR marketing campaigns, or metaverse platforms, we bring your immersive ideas to life. 7. IoT & Firmware Development We build smart IoT solutions and embedded firmware for connected devices using platforms like Arduino, ESP32, Raspberry Pi, and STM32, enabling seamless hardware-software integration. 8. PLC Programming & Automation We develop and optimize PLC systems for industrial automation using Allen Bradley, Siemens, and Schneider, focusing on efficient ladder logic and reliable process control. 9. Embedded Systems Development We create custom embedded solutions for smart devices and industrial applications, ensuring efficient, low-latency, and high-performance hardware integration. At Quantum Code Solutions, we deliver user-centric, innovative, and future-ready solutions to keep your business ahead in the digital race. Let’s build something extraordinary together.

1.0
1.0
100%

Luhove, Ukraine
$30 USD per hour
I’m a results-driven engineer specializing in AI-powered automation, algorithmic trading systems, and full-stack web development. I help individuals and businesses turn ideas into robust, data-driven, and scalable products. 💡 Core Expertise: ✅ AI & Machine Learning: Model design, fine-tuning, and deployment (TensorFlow, PyTorch, OpenAI APIs) ✅ Algorithmic & Auto Trading: Strategy design, backtesting, and integration with APIs (Binance, MetaTrader, Interactive Brokers, Alpaca, etc.) ✅ Full Stack Development: React, Next.js, Node.js, Django, FastAPI, Flask ✅ Data Engineering: Real-time data pipelines, financial data scraping, and automation ✅ DevOps & Cloud: AWS, Docker, CI/CD, scalable deployments 🎯 What I Deliver: ✅ Reliable and maintainable code ✅ Clear communication and timely delivery ✅ Scalable architecture for long-term performance 🤝If you’re looking for someone who can bridge AI intelligence with solid engineering, let’s build something exceptional together.
An ArangoDB expert is a database specialist who designs, deploys, and optimizes solutions on ArangoDB, a native multi-model database that combines document, graph, and key-value data within a single engine. Hiring a freelance ArangoDB expert gives you direct access to engineering talent capable of building high-performance applications backed by AQL (ArangoDB Query Language), graph traversals, and distributed cluster deployments.
An ArangoDB consultant handles every layer of the database stack, from initial schema design through production tuning. They translate complex data relationships into collections, edges, and graphs, then write efficient AQL queries that join document and graph data without the overhead of multiple database systems.
The commercial value is consolidation. Instead of operating separate document stores, graph engines, and caching layers, an ArangoDB specialist delivers one unified system that reduces infrastructure costs, simplifies the application code, and shortens query paths for analytics and recommendation features.
Freelance ArangoDB developers typically deliver work across data modeling, query engineering, and operational deployment. Common services include:
A capable ArangoDB consultant is fluent across the wider ecosystem that surrounds the database. Expect proficiency with:
ArangoDB is used wherever data has both structure and relationships. Freelance ArangoDB experts commonly support:
Strong candidates show a mix of database engineering fundamentals and ArangoDB-specific depth. Look for hands-on experience modeling at least one production graph, evidence of AQL optimization work, and clear comfort with cluster topology. Portfolios should include schema diagrams, sample AQL queries, and case studies showing query latency or throughput improvements.
Useful interview questions include:
Cross-check answers against their portfolio, GitHub repositories, and any Foxx services or AQL libraries they have published.
Freelancer.com gives you access to a global pool of database engineers, backend developers, and data architects with verified ArangoDB experience. You can review profiles, portfolios, ratings, and past project history before you hire on Freelancer.com, then choose between fixed-price milestones or hourly engagements depending on your project scope.
Because freelancers on Freelancer.com bid competitively on your brief, you set the budget and compare proposals from specialists across time zones. Milestone Payments hold funds securely until you approve each deliverable, which is particularly useful for staged database work such as schema design, migration, and cluster deployment. Whether you need a short consultation on AQL performance or a long-term ArangoDB engineer embedded in your team, Freelancer.com supports both engagement models.
Hiring an ArangoDB specialist is straightforward when you start with a clear brief and a structured evaluation process. The clearer you are about your data model, deployment environment, and expected outcomes, the more accurately freelancers can scope and price their bids. The three steps below walk you through it.
Your project post is the single biggest determinant of bid quality. A precise brief filters for ArangoDB freelancers whose experience genuinely matches your stack, while a vague post invites generic proposals. Head to the
Bids are short proposals, not just price quotes. They reveal how each ArangoDB freelancer interprets your brief, what approach they would take to your schema or query problem, and what timeline they consider realistic. Read each proposal carefully and shortlist candidates whose understanding of multi-model design, AQL, and cluster operations clearly matches your needs.
Your final decision should combine proposal quality with profile evidence. Look at portfolio depth across multiple ArangoDB engagements rather than weighting a single standout example, and read written reviews from past clients to gauge reliability under pressure. For database work, consistency and communication matter as much as raw skill.
A focused engagement such as AQL query tuning or an index audit can be completed in a few days, while building a new schema with graph collections and Foxx services typically takes several weeks. Migrations from MongoDB or Neo4j and full cluster deployments are larger projects that often run one to three months depending on data volume and integration complexity.
If your project relies on multi-model features, AQL traversals, SmartGraphs, or ArangoSearch, hire a specialist who has worked directly with ArangoDB in production. A general database developer can handle CRUD wiring, but ArangoDB-specific tuning, sharding strategy, and graph modeling require dedicated experience to avoid expensive rework.
Neo4j is a dedicated graph database, while ArangoDB is a native multi-model engine that handles documents, graphs, and key-value data in one query language. Teams choose ArangoDB when they want graph capabilities alongside document storage without operating two separate systems.
Yes. Many clients hire ArangoDB consultants for short engagements such as schema reviews, query optimization, cluster health checks, or migration feasibility assessments. You can scope the project as a fixed-price engagement on Freelancer.com and extend it later if more work is needed.
For most ArangoDB projects, a skilled solo freelancer is sufficient and offers faster communication and lower coordination overhead. Agencies make sense only when the work spans full-stack delivery across multiple disciplines such as DevOps, frontend, and backend simultaneously.

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