The ultimate guide to hiring a web developer in 2021
If you want to stay competitive in 2021, you need a high quality website. Learn how to hire the best possible web developer for your business fast.
Debugging is the process of finding and resolving errors or defects in a system, application, or computer code. It is an essential tool to ensure the development process runs smoothly and efficiently. A Debugging Expert has many years of experience working with debugging, troubleshooting, and software testing. They use a variety of tools and techniques to identify errors. It can help optimize your system, find any underlying issues, and enhance your overall user experience.
The expertise that our Debugging Expert can offer you is invaluable:
- Help debug existing applications and making them more efficient
- Troubleshoot issues within applications
- Resolve technical problems with code optimization
- Identify any potential security vulnerabilities
- Identify and resolve potential bug issues
Here's some projects that our Debugging Experts made real:
At Freelancer.com our expert Debugging Expert has consistently delivered excellent results to many satisfied clients. Our dedication to proactively finding potential problems is why so many companies choose us. If you're looking for a reliable professional to streamline your applications or fix errors within them then invite you to post your project and hire a Debugging Expert on Freelancer.com today!
From 36,616 reviews, clients rate our Debugging Experts 4.9 out of 5 stars.Debugging is the process of finding and resolving errors or defects in a system, application, or computer code. It is an essential tool to ensure the development process runs smoothly and efficiently. A Debugging Expert has many years of experience working with debugging, troubleshooting, and software testing. They use a variety of tools and techniques to identify errors. It can help optimize your system, find any underlying issues, and enhance your overall user experience.
The expertise that our Debugging Expert can offer you is invaluable:
- Help debug existing applications and making them more efficient
- Troubleshoot issues within applications
- Resolve technical problems with code optimization
- Identify any potential security vulnerabilities
- Identify and resolve potential bug issues
Here's some projects that our Debugging Experts made real:
At Freelancer.com our expert Debugging Expert has consistently delivered excellent results to many satisfied clients. Our dedication to proactively finding potential problems is why so many companies choose us. If you're looking for a reliable professional to streamline your applications or fix errors within them then invite you to post your project and hire a Debugging Expert on Freelancer.com today!
From 36,616 reviews, clients rate our Debugging Experts 4.9 out of 5 stars.WordPress Website Diagnostic & Repair – Slow Performance, Images Missing, Website Randomly Going Down Project Overview I’m looking for an experienced WordPress performance and server troubleshooting expert to diagnose and permanently fix several critical issues affecting my website. This is not simply a speed optimization project—I need someone who can identify the root cause of multiple issues and repair them correctly. The website has progressively become unstable, and I need an expert who is comfortable working across WordPress, hosting, databases, server configuration, caching, security, and CDN/image delivery if necessary. ⸻ Current Issues I’m experiencing several problems, including: * Website periodically goes down or becomes unavailable * Overall...
Our consultation form is powered by Contact Form 7 and it’s currently failing to deliver submissions. Visitors complete the registration screen, hit the submit button, and nothing reaches our inbox or database—no success message, no error prompt, just confusion. I need you to step in, trace the issue, and restore a friction-free flow. Here’s what I expect: • Diagnose the root cause inside WordPress, paying close attention to Contact Form 7 hooks, JavaScript validation, and any theme or plugin conflicts. • Repair the submission logic so every valid form reliably reaches the designated email (and any additional endpoint we configure). • Add clear, user-friendly feedback on success and on any validation problem, instead of the silent failure we have now....
My Flutter-based loyalty app has been live on both stores for just over three months. Everything runs smoothly on Android, but on iOS the user-login functionality suddenly stopped working: as soon as a customer submits their credentials an error message pops up and the flow halts. I have a screenshot of the exact message ready for your reference. I need the login issue isolated, fixed, and pushed to the App Store as an expedited update. Beyond this immediate task, I’m looking for someone interested in an ongoing collaboration to handle future maintenance and feature expansion, so writing clean, well-commented code and documenting any changes are important to me. Key deliverables • Identify the root cause of the iOS login error • Implement and test the fix on the curre...
I need a complete system design and architecture for a Windows-only desktop application that will serve as a data-management solution. The core goal is to let end-users capture, organise, search and report on medium-to-large datasets through a fast, intuitive interface. Scope of work You will start from a blank slate, so the engagement covers everything from choosing the tech stack to defining the database schema, component boundaries, communication patterns and deployment strategy. While I am leaning toward a modern .NET (C#/WPF or WinUI) approach, I am open to alternative frameworks such as Electron, Qt or JavaFX if you can justify clear performance and maintainability advantages. Key activities • Draft high-level and low-level architecture diagrams (layered architecture, modu...
I have an existing Chrome-based automation script that suddenly stopped behaving as expected. It is supposed to fill out forms, click buttons, and move smoothly from page to page, but it keep getting 403. Your task is to dig into the code, and get everything running flawlessly again. You are welcome to work in the same language and framework already used—if you are comfortable with Python + Selenium, Playwright, or Puppeteer, that is ideal. I will give you: • The current source and a short video showing the failure points • Test credentials and URLs for each flow the bot must complete Deliverables: 1. A corrected, fully functioning bot script. 2. A concise change log explaining what you fixed or refactored. 3. Quick setup/run instructions so I can verify on my ...
We have an Android app (TC58) that prints ShipStation shipping labels (4x6 PDF) to a Zebra mobile printer over Bluetooth. We need a definitive fix for unreliable PDF Direct printing and a robust default path that works across power cycles and app sessions. Current setup Device: Zebra TC58 (Android handheld) Printer: Zebra mobile thermal printer (Link‑OS 6.x) over BLE Labels: ShipStation 4" x 6" PDFs (~63 KB) SDK: Zebra Link‑OS Android SDK (Bluetooth + FileUtil/sendFileContents) What we’ve tried and observed We toggle (PDF Direct) per print: set to pdf before print, none after. This is wrong per Zebra docs; only applies after a printer restart. After the first successful label, subsequent prints often fail silently (no label) or “corrupt” printer state ...
Hi, I'm an experienced iOS developer looking for a Senior iOS Developer who enjoys mentoring and teaching. My goal is to become an expert in SwiftUI and modern iOS development by building real applications together. I also want to prepare for Senior iOS Developer interviews and strengthen my understanding of production-level concepts. The main topics I'd like to focus on are: SwiftUI Swift Concurrency (async/await & Actors) Combine Clean Architecture MVVM-C Dependency Injection SOLID Principles Memory Management CI/CD Senior-level iOS best practices I'm not looking for someone to build an app for me. I'm looking for a mentor who can: Guide me through live sessions (Zoom/Google Meet) Review my code Explain architecture and best practices Build real features tog...
I need an experienced Python developer to review my desktop application code. The goal is to enhance performance and maintainability. Key tasks include: - Identifying and fixing bugs - Improving code efficiency - Enhancing code readability Ideal skills and experience: - Proficiency in Python, especially for desktop applications - Strong debugging skills - Experience with code optimization and readability improvements - Familiarity with best coding practices and design patterns Please provide examples of previous similar work.
Description: I have a React authentication application that needs several bugs fixed and incomplete functionality completed. The project uses React, React Router, and Axios. Issues to Fix: Login Form Bug - Password input label has incorrect htmlFor attribute pointing to "email" instead of "password" Empty Login Handler - The handleSubmit method in needs implementation for API authentication call and error handling Incomplete User State Management - has empty setCurrentUser and logout methods that need proper token handling and localStorage integration Missing Profile Data Fetch - has empty componentDidMount that should fetch user data via Axios Class Naming Inconsistency - class is named "Contacts" instead of "ContactsContainer" Requireme...
## Fix Two Mobile Shopify Issues — Kalles Theme / Avada Conflict Investigation **Website:** []() **Shopify theme:** Kalles **Relevant apps:** Avada and other third-party apps may be involved This project covers **two separate mobile issues**, each with its own milestone. ### Milestone 1 — £60 ## Fix Shopify Inbox on Mobile The Shopify Inbox chat icon works correctly on desktop. However, on my **iPhone 13 Pro Max**, the Inbox icon is visible and appears clickable, but the chat window does not open in either: * Safari * Chrome Other developers have sometimes been able to open it on their own devices, which suggests the issue may be intermittent or dependent on device, browser, script timing, caching or app-loading conditions. Shopify Support suggested that the pro...
I run a classic ASP, SQL-driven site on a shared-hosting plan. Everything works until a visitor clicks a particular link whose destination is stored in the database—at that moment the browser returns the generic “500 – Internal server error.” I need someone who knows the quirks of legacy ASP on shared IIS environments to trace the fault, explain the root cause, and guide me through (or implement) the fix without upsetting the rest of the application. You’ll probably want to: • turn on friendly-error detail, check IIS logs and SQL traces • review the query and any redirect or response headers tied to that stored link • patch the offending script or database record, then verify the page now loads cleanly Deliverables 1. Short diagnostic ...
أحتاج إلى يد خبيرة تنقل مشروع Firebase الحالي الخاص بتطبيقي المبني بفلاتر من الحساب القديم إلى حساب جديد تمامًا، ثم تُعيد ربط كل المفاتيح و-configuration داخل كود التطبيق ولوحة التحكم بحيث يعمل كل شيء بسلاسة كما كان – أو أفضل. التطبيق جوّال ومكتوب بفلاتر، ولوحة التحكم مبنية على Firebase أيضًا. ما أريده باختصار هو: • إنشاء مشروع Firebase جديد على البريد الإلكتروني الجديد. • تعديل إعدادات Google-Services / plist وملفات أو ما يُعادلهما داخل كود Flutter. • تفعيل جميع الخدمات السابقة (المصادقة، Firestore، Cloud Messaging للإشعارات) في المشروع الجديد والتأكد من ترحيل القواعد وقائمة المستخدمين إن لزم. • تحديث مفاتيح الـAPI في لوحة التحكم والتأكد من أن كل العمليات الإدارية (عرض البيانات، إضافة أو حذف عناصر، إرسال إشعارات) تعمل بدون أخطاء. • اختبار كامل على ...
Freelancer Needed: Mobile App QA Tester + Product Consultant + Contract Manager** I am looking for an **independent freelancer (no agencies or teams)** who can help with testing, reviewing, and improving a mobile application and its cryptocurrency ecosystem. The role is not only basic QA testing. I need someone who can think critically, give **honest negative feedback**, question decisions, identify problems, and help evaluate the product from both a technical and user perspective. Main Responsibilities: Mobile App Testing Test sending and receiving messages. Test push notifications and verify they work correctly. Test audio calls. Test video calls (very important) — this is a key feature and must be tested thoroughly across different devices and network conditions. Identify...
I need a custom SCSI driver written for Linux that cleanly mounts and manages storage devices formatted with the btrfs file system. The goal is to expose full read/write functionality, pass-through standard SCSI commands, and report accurate SMART data without compromising kernel stability or btrfs’s advanced features such as snapshots and checksums. Scope • Develop a loadable kernel module that detects hot-plugged SCSI storage and registers the device so the kernel’s btrfs layer sees it as a native block device. • Implement the essential INQUIRY, READ/WRITE(10/16), MODE SENSE/SELECT, and REQUEST SENSE command set, plus TRIM/UNMAP for efficient space reclaim on btrfs. • Provide I/O queue management that keeps latency low and honours Linux’s blk-mq sc...
Experienced SA:MP Roleplay Scripter Needed (Pawn) | Long-Term Project Description We are looking for an experienced SA:MP Pawn developer to join our team for a long-term roleplay project. This is NOT a beginner position. We’re looking for someone who has worked on large roleplay servers and understands complex game systems, optimization, and clean scripting practices. Requirements * Minimum 3+ years of SA:MP Pawn scripting experience. * Strong knowledge of roleplay gamemodes. * Experience with MySQL, YSI, sscanf, streamer, crashdetect, and common SA:MP plugins. * Able to debug and optimize existing systems. * Experience creating new gameplay features from scratch. * Familiar with GitHub version control. * Good communication and ability to meet deadlines. Systems You’ll Be...
I'm looking for an experienced Backend or Full Stack Developer to work with me long-term on a CPaaS (Communication Platform as a Service) project. The platform includes services like SMS, WhatsApp, Email, and other event-driven messaging services built using a microservice architecture. This is NOT an hourly project. I would like to pay per completed task/milestone, and I'll be assigning tasks regularly over the long term. Individual freelancers only. No agencies, software companies, or teams. Typical Tasks * Debugging and fixing complex issues * Performance optimization * Improving system design and architecture * Implementing new features * Reducing bugs and improving code quality * Real-time messaging improvements * WebSocket implementation and polling optimization * API d...
My site is dropping the ball the moment a visitor opens more than one tab: sessions are not being created and the localStorage logic unravels, leaving users effectively logged out before they even begin. I need someone who knows JavaScript inside out and understands the security nuances of cookies, localStorage, sessionStorage and token-based auth. You’ll start by pinpointing why the session handshake is failing when a second tab spawns, trace any race conditions or storage conflicts, then patch the logic so a single, secure session is established and recognised everywhere. I need airtight handling here—no duplicated tokens, no accidental overwrites and absolutely no leakage of sensitive data. Deliverables • Root-cause report with the broken flow mapped out &bull...
I already have a working codebase, but it’s missing one key feature. I’ll share the repository as soon as we start; your first step will be to review the current structure, understand how the components fit together, and then build the new functionality so it blends naturally with the existing logic. Clean, well-commented code and no regressions are essential. Please make sure unit or integration tests cover the new paths and that your changes don’t break any current behavior. Once the feature is in place, a short note explaining the new modules, configuration updates, and how to trigger or disable the feature will be plenty. If you’re comfortable jumping into someone else’s code and extending it confidently, I’m ready to get started right away.
I’m building the low-level firmware for an ARM Cortex-A microcontroller and need help closing the remaining gaps in startup code, peripheral configuration, and board-level testing. The toolchain is already in place (GCC, OpenOCD, and a J-Link probe), and the hardware boots, but several peripherals still need clean, maintainable drivers and the overall initialization sequence must be tightened for reliable production use. You’ll dive into: • Writing or refactoring C/C++ startup routines, linker scripts, and BSP code specific to this Cortex-A device • Bringing up UART, SPI, GPIO, and a high-speed interface that feeds data to an upstream processor • Tracing hard faults with JTAG/SWD and delivering concise root-cause notes so I can reproduce your findings &bul...
I already have a fully working handicapping routine for horse racing that I pieced together with Copilot, plus an older sample application that shows the exact flow and screens I want. What’s missing is a clean Windows-ready .exe so I can run the program (and share it with a few friends) without installing a full development environment. Here’s the current state: • All source files are ready to hand over, neatly commented. • Copilot can regenerate any individual factor or module on demand, so if you prefer rebuilding specific parts, that’s available. • I’m still deciding between a lightweight command-line tool and a simple GUI; I’d welcome your advice on which will compile most reliably and be easiest to maintain. Your role: 1. Review the exis...
On my WordPress site, built with a premium theme, the footer behaves oddly on phones held in portrait mode. When I reach the very bottom and begin to scroll up, the view suddenly snaps up to the “Our Services” <h3> heading instead of moving smoothly. I haven’t knowingly added any footer-specific custom code or plugins, so I need someone to: • trace the exact cause—whether it’s theme JS, a plugin, or rogue CSS overflow rules • correct the issue so scrolling in the footer is smooth in mobile "media portrait orientation".
My site is already hosted on AWS, feature-complete on paper, yet five key components refuse to work and our go-live is now less than two weeks away. Every failure is consistent and repeatable, so I’m looking for someone who can dive straight into production-level debugging and close these gaps fast. The components that must be repaired: • Email verification (custom-built) • Dialer system (Twilio) • Booking system (custom-built) • Payment system (Stripe) • Live functionality / real-time chat All code will stay where it is—nothing leaves AWS—so you’ll need solid AWS console familiarity alongside everyday full-stack skills. I can provide repository access, architecture notes, and direct contact with the previous developer if needed....
Fix my blog/website store , which presents at the moment the following: Notice: Function _load_textdomain_just_in_time was called incorrectly. Translation loading for the aliexpress domain was triggered too early. This is usually an indicator for some code in the plugin or theme running too early. Translaions should be loaded at the init action or later. Please see Debugging in WordPress for more information. (This message was added in version 6.7.0.) in /home/sites/20a/f/f00f9b8456/public_html/wp-includes/ on line 6121 Notice: Function _load_textdomain_just_in_time was called incorrectly. Translation loading for the wc-eway domain was triggered too early. This is usually an indicator for some code in the plugin or theme running too early. Translations should be loaded at the init action...
My Avalonia-based IDE (C# / .NET 10) used to show a real-time XAML Previewer for every .axaml file. After introducing a TabControl the preview vanished, and .axaml files now open with no preview at all. I also have a separate CodeEdit window that still pops up in its own top-level window; I want that editor to appear as another tab inside the existing MainWindow instead, using the framework’s standard tab styling—no fancy visuals, just the normal look. What I need you to do is dive into the current codebase, locate whatever broke when the TabControl was added, and wire the XAML Previewer back in so the live view refreshes exactly as it did before. While you are in there, refactor the CodeEdit window so that opening a .cs file adds a new tab within the same MainWindow instance,...
I have a microcontroller-based board that will sit in the field and quietly record temperature readings from one or more digital sensors. Your job is to write the embedded firmware that pulls those readings at set intervals, time-stamps them, and stores everything persistently in a neat, easily downloadable file (CSV or similar). Core needs • Reliable polling of the attached temperature sensors (currently using a standard one-wire digital device, but code should be abstract enough to swap to I²C if required later). • Configurable sample rate—default 1 Hz but changeable over a simple serial menu or compile-time constant. • Local, non-volatile storage on the board’s microSD slot; automatic file rollover when a maximum size is reached so nothing is eve...
use una aplicación que corre exclusivamente en Windows y necesito aplicar ingeniería inversa para introducir mejoras concretas: deseo optimizar su rendimiento y, al mismo tiempo, pulir la experiencia de uso sin alterar la lógica de negocio que ya funciona. no es un sofware mio, si no un sofware que pague por un mes para mi uso. A partir de ahí espero que analices su estructura —desensamblado, mapeo de dependencias, obtención de código legible— para localizar cuellos de botella y simplificar los flujos de interacción con el usuario. Herramientas como Ghidra, IDA Pro o similares son bienvenidas siempre que el resultado sea un proyecto mantenible y comentado. Acepto sugerencias adicionales mientras se respete la compatibilidad...
If you want to stay competitive in 2021, you need a high quality website. Learn how to hire the best possible web developer for your business fast.
Learn how to find and work with a top-rated Google Chrome Developer for your project today!
Learn how to find and work with a skilled Geolocation Developer for your project. Tips and tricks to ensure successful collaboration.