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    5,000 debugging jobs found

    ...systems and event-driven trading applications to diagnose and fix an intermittent issue in the existing codebase. **This is an existing-system debugging project, not a complete platform rebuild.** ## Problem Statement The Zerodha WebSocket feed receives option-market data, and the application successfully normalizes and routes option ticks into its option tick store. However, the position-monitoring service intermittently reports: `Skipping position monitoring: missing, invalid, or stale premium for [OPTION_SYMBOL] (token=[INSTRUMENT_TOKEN])` The affected examples include BAJAJ-AUTO and TCS option contracts. The issue persists despite repeated debugging. We need to establish the actual root cause rather than make assumptions. Potential investigation areas include: ...

    $6 - $15
    Sealed
    $6 - $15
    20 bids

    ...programming - Tampermonkey Userscripts and Chrome Extensions - Browser Automation (Playwright, Puppeteer, Selenium, etc.) - Advanced DOM manipulation and MutationObserver - Dynamic websites, SPAs, and asynchronous JavaScript - AJAX, Fetch API, REST APIs, JSON, and WebSockets - HTTP/HTTPS requests, headers, cookies, sessions, and authentication flows - Browser DevTools and advanced network debugging - JavaScript debugging, execution flow analysis, and reverse engineering - Browser events, page lifecycle, and navigation behavior - API request/response analysis - Error detection, root-cause analysis, and troubleshooting - Performance optimization and reliable automation architecture ## Core Responsibilities **1. Complete Website Behavior Analysis** Analyze the website'...

    $94 Average bid
    $94 Avg Bid
    57 bids
    Game Developer
    5 days left

    ...verifiable published work (personal site, , Steam, GitHub, game jam entries, or shipped title credits). Your portfolio is the most important part of your application and plays a major role in our selection, so please include the work that best represents your skills. Advanced proficiency with at least one major game engine (Unity, Godot, Unreal), including editor tools, scene management, and debugging utilities. Comfort with engine scripting languages such as C#, GDScript, C++, or Blueprints, with the ability to interpret, troubleshoot, and enhance gameplay logic. Proven ability to identify and resolve gameplay issues through iterative playtesting. Strong written communication skills for drafting precise task instructions and acceptance criteria. Experience in game QA, technical ...

    $38 / hr Average bid
    $38 / hr Avg Bid
    74 bids

    ...functional requirements and rough block diagrams; what I now need is the full electronic design, ready for manufacturing. Scope • Power architecture: single regulated 5 V input with the necessary step-downs and filtration for the ESP32’s 3 V3 rail, back-light drive, and any aux lines. • Digital section: ESP32 module or bare chip with all pins broken out for firmware flashing, reset, and debugging. • Interfaces: matrix keypad connector and ESD protection, 8/16-bit TFT LCD interface, plus level-shifting where required. • Communications: I²C, SPI, and UART brought to headers for external sensors and future expansion. • Miscellaneous peripherals: buzzer driver, status LEDs, spare GPIO header, and on-board programming port. • Desig...

    $87 Average bid
    $87 Avg Bid
    26 bids

    ...pair of expert eyes to walk through the code with me, isolate the faulty branches, and refactor or rewrite the logic so every scenario behaves as intended. What I’ll provide • I can share my screen and follow the steps suggested by you. I can’t provide you code access because of security reason. if possible ww can connect using any chat medium. What I need from you • Live or asynchronous debugging support (screenshare or detailed code comments) • Clean, working service-layer code that solves the business rules in question • Brief notes on the fix so I can learn from the approach and apply it to future tasks If you’re comfortable diving into Spring Boot services and have a knack for pinpointing subtle logical flaws, let’s get...

    $2 / hr Average bid
    $2 / hr Avg Bid
    24 bids

    ...pair of expert eyes to walk through the code with me, isolate the faulty branches, and refactor or rewrite the logic so every scenario behaves as intended. What I’ll provide • I can share my screen and follow the steps suggested by you. I can’t provide you code access because of security reason. if possible ww can connect using any chat medium. What I need from you • Live or asynchronous debugging support (screenshare or detailed code comments) • Clean, working service-layer code that solves the business rules in question • Brief notes on the fix so I can learn from the approach and apply it to future tasks If you’re comfortable diving into Spring Boot services and have a knack for pinpointing subtle logical flaws, let’s get...

    $3 / hr Average bid
    $3 / hr Avg Bid
    11 bids

    ...Flutter (frontend) and Laravel (backend). Responsibilities: Fix existing bugs and troubleshoot issues. Add new features to the app. Improve UI/UX and performance. Manage Laravel APIs, MySQL database, and admin panel. Ensure compatibility with mobile phones and tablets. Requirements: Strong experience in Flutter, Laravel, PHP, and MySQL. Experience maintaining existing production apps. Good debugging and problem-solving skills. Project Type: Ongoing work with potential for long-term collaboration. Please share your relevant experience, previous projects, availability, and expected budget....

    $248 Average bid
    $248 Avg Bid
    108 bids

    ...and/or Three.js. - Supporting dynamic movement of objects based on backend/API data. - Creating components that can work in both different layouts and camera views where required. - Optimizing 3D models and components for good browser performance. - Maintaining clean and reusable React component architecture. - Ensuring components can be easily integrated into an existing React/Vite application. - Debugging visual, positioning, animation, and performance issues. ## Example Requirement For example, a conveyor component should not be hardcoded for only one conveyor. It should be configurable through properties such as: - Length - Width - Height - Position - Rotation - Conveyor type - Roller count - Conveyor status - Pallet presence - Label - Label position/direction - Color - A...

    $534 Average bid
    $534 Avg Bid
    54 bids

    ...further development and maintenance may continue beyond December 2026.## Existing Resources and Development Tools The project is already in an advanced preparation stage. The selected developer will receive access to existing materials and development resources, including: 1. **Floot:** The primary application development platform. 2. **Claude:** AI-assisted programming, technical architecture, debugging and development support, including relevant plugins and integrations. 3. **ChatGPT:** AI-assisted development, documentation, testing and workflow support, including relevant plugins and integrations. 4. **Design System:** Approximately 80% of the UI/UX design system has already been prepared, including interface concepts, design guidelines, components and application structure...

    $9 / hr Average bid
    $9 / hr Avg Bid
    115 bids

    ...alter in-game behavior — such as modifying character stats, unlocking features, adjusting game mechanics, or fixing bugs. Requirements: - Hands-on experience with NES ROM hacking or reverse engineering - Proficiency in 6502 assembly language - Familiarity with NES memory mapping, CPU architecture, and ROM structure - Experience using tools such as FCEUX, Mesen, or similar NES emulators with debugging capabilities - Knowledge of Game Genie code format and how codes interact with ROM/RAM addresses - Ability to read and navigate existing game code to locate relevant routines - Experience with hex editors and disassemblers (e.g., Disassembler, IDA, or NES-specific tools) Deliverables: - Modified ROM file(s) with requested changes applied, OR a set of working Game Genie codes ...

    $7 / hr Average bid
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    32 bids

    ...errors causing the visible bugs. 2. Repair the form handling so all inputs validate and persist correctly. 3. Resolve the database connection/query failures and make sure results display as intended. 4. Hand back clean, well-commented code along with a short read-out of what was fixed so I can keep track for future maintenance. Deep familiarity with PHP 7+, MySQL, PDO/mysqli, and general debugging tools such as Xdebug or error-logging best practices will help you move quickly. Once the site is stable again, I’ll test each affected module; payment is released when every reproduction step passes without errors....

    $355 Average bid
    $355 Avg Bid
    184 bids

    ...and/or Three.js. * Supporting dynamic movement of objects based on backend/API data. * Creating components that can work in both different layouts and camera views where required. * Optimizing 3D models and components for good browser performance. * Maintaining clean and reusable React component architecture. * Ensuring components can be easily integrated into an existing React/Vite application. * Debugging visual, positioning, animation, and performance issues. ## Example Requirement For example, a conveyor component should not be hardcoded for only one conveyor. It should be configurable through properties such as: * Length * Width * Height * Position * Rotation * Conveyor type * Roller count * Conveyor status * Pallet presence * Label * Label position/direction * Color * A...

    $532 Average bid
    $532 Avg Bid
    66 bids

    ...padding, margins, and element sizing. Improve the layout and consistency of input fields, buttons, labels, links, and form containers. Ensure input fields and buttons display correctly in their default, focused, disabled, loading, and error states. Fix overlapping elements, broken layouts, inconsistent typography, and other visual defects. Ideal Candidate The ideal developer has experience debugging existing web applications, fixing authentication issues, improving frontend UI, and troubleshooting frontend/backend integration. Please review the existing website before submitting your proposal. In your bid, briefly describe your relevant experience, how you would investigate these issues, your estimated completion time, and any information you would need to get started. The pr...

    $19 / hr Average bid
    $19 / hr Avg Bid
    381 bids

    ...padding, margins, and element sizing. Improve the layout and consistency of input fields, buttons, labels, links, and form containers. Ensure input fields and buttons display correctly in their default, focused, disabled, loading, and error states. Fix overlapping elements, broken layouts, inconsistent typography, and other visual defects. Ideal Candidate The ideal developer has experience debugging existing web applications, fixing authentication issues, improving frontend UI, and troubleshooting frontend/backend integration. Please review the existing website before submitting your proposal. In your bid, briefly describe your relevant experience, how you would investigate these issues, your estimated completion time, and any information you would need to get started. The pr...

    $32 / hr Average bid
    $32 / hr Avg Bid
    336 bids

    ...strong technical auditing experience. Previous experience with StackFood or similar platforms is strongly preferred. Strong experience required in: - Flutter / Dart - Laravel / PHP - React / JavaScript - Flutter State Management - REST APIs - Google Maps SDK - GPS / Geolocation - Google Places / Geocoding - Firebase / FCM - Android & iOS debugging - MySQL - Authentication / OTP flows - Git / Code Review - Application Architecture - Production debugging Previous experience with food delivery, courier, taxi, logistics, marketplace, or other real-time location-based systems is strongly preferred. Experience with StackFood by 6amTech is a plus but not required. Initial Engagement: We want to start with a paid technical audit. The first task will be to review the platfo...

    $496 Average bid
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    270 bids
    MERN Security & Bug Fixes
    4 days left
    Verified

    My production site runs on the React JS on the client, a Node.js/Express API, and MongoDB for persistence. After an external audit wi...Automated tests already exist; add or update them where behaviour changes, then run our GitHub Actions pipeline to confirm green builds. Final acceptance is a successful redeploy on Heroku with zero regression across the existing Cypress end-to-end suite. Tech in play: React 18, Redux Toolkit, Node.js 18, Express 4, Mongoose 6, JWT auth, Helmet, and AWS S3 for static assets. Please be comfortable debugging with Chrome DevTools, VS Code, and MongoDB Atlas. Deliverable: merged, tested code that closes every ticket in the shared issue list and a brief changelog describing each fix. and then I will ask the tester to run test again, If ok I will raise ...

    $141 Average bid
    $141 Avg Bid
    303 bids

    I'm looking for a backend develope...data. Technical Details: The backend uses PHP with MySQL and connects to a third-party REST API using JSON requests and responses. The existing application and database are already set up. This project is focused on debugging and fixing the integration rather than building a new system. Expected Deliverables: - Updated and working API integration. - Reliable synchronization without duplicate records. - Source code with the necessary fixes. - A short summary of changes made. - Successful testing using sample API responses. Please briefly explain your experience debugging REST API integrations and working with MySQL databases. Include your estimated completion time. If the work goes well, there may be additional backend maintenanc...

    $28 Average bid
    $28 Avg Bid
    133 bids

    ...maintain clean, scalable codebases. ## Required Qualifications * Strong professional experience with modern C++ development. * Experience building Windows desktop applications. * Solid understanding of multithreading, concurrency, and performance optimization. * Experience with real-time rendering or graphics programming. * Ability to write clean, maintainable, and well-documented code. * Strong debugging and problem-solving skills. ## Preferred Qualifications * Experience with ImGui or similar immediate-mode UI frameworks. * Knowledge of Win32 API and Windows internals. * Experience with DirectX 11 or DirectX 12 rendering pipelines. * Previous work on overlays, HUDs, desktop companions, or game tooling. * Familiarity with MMORPG mechanics, combat systems, or strategy assista...

    $974 Average bid
    $974 Avg Bid
    38 bids

    My active campaigns have stalled because AdsBot-Google keeps reporting that it can’t reach my landing pages, and the site itself rarely appears in search. I need someone who understands both Google Ads and web development to track the problem from every angle, then correct it so my ads run, conversions record properly, and the site st...fixed so AdsBot-Google can fetch every target URL without errors. • Real-time conversions flowing into Google Ads and Google Analytics again, completely aligned with the actual checkout/lead events on site. • A brief, plain-English summary of the changes you made, so I’m not in the dark the next time something breaks. If your background covers both paid traffic optimisation and hands-on debugging of website code/servers, le...

    $32 Average bid
    $32 Avg Bid
    56 bids

    ...order status update • WooCommerce customer order confirmation email • Admin/new-order email • Any relevant error logs Developer Requirements Please apply only if you have experience with: • WordPress • WooCommerce • PHP • WooCommerce hooks/actions • Razorpay integration • Razorpay Magic Checkout • WooCommerce transactional emails • SMTP/email troubleshooting • WordPress plugin conflicts • Debugging existing WooCommerce websites Experience troubleshooting zero-value WooCommerce orders and payment gateway integrations will be preferred. Important This is an existing website troubleshooting/fixing project. We are not looking for a complete website redesign or rebuild. The developer should first identify the roo...

    $28 Average bid
    $28 Avg Bid
    80 bids

    ...and/or Three.js. * Supporting dynamic movement of objects based on backend/API data. * Creating components that can work in both different layouts and camera views where required. * Optimizing 3D models and components for good browser performance. * Maintaining clean and reusable React component architecture. * Ensuring components can be easily integrated into an existing React/Vite application. * Debugging visual, positioning, animation, and performance issues. ## Example Requirement For example, a conveyor component should not be hardcoded for only one conveyor. It should be configurable through properties such as: * Length * Width * Height * Position * Rotation * Conveyor type * Roller count * Conveyor status * Pallet presence * Label * Label position/direction * Color * A...

    $1946 Average bid
    $1946 Avg Bid
    81 bids

    Server debugging and issue resolution, IT troubleshooting and system performance checks, and strategic technical consulting to align with project goals. Ongoing support on an hourly basis.

    $15 / hr Average bid
    $15 / hr Avg Bid
    1 bids

    I want to sharpen my day-to-day troubleshooting skills around Twilio Programmable Voice and, in particular, dive deep into TwiML and call-flow logic. The goal is to meet regularly—live, one-on-one—to dissect real customer-reported issues, replay them with sanitized data, and step through practical fixes. Topics that matter most to me include: building and debugging TwiML, shaping call flows, handling webhooks, analysing Voice Insights, and interpreting SIP-level problems such as latency, jitter, and packet loss. I already work in technical support, so the sessions should feel like an advanced lab where we pull log files, test APIs, and reason through what is really happening on a call. This is ongoing mentorship rather than a packaged course. We can agree on a ca...

    $4 / hr Average bid
    Local
    $4 / hr Avg Bid
    10 bids

    ...scenarios rather than a pre-packaged course. Primary focus areas • Twilio Programmable Voice & TwiML • Voice APIs, SDKs, Webhooks • SIP trunking and Voice Insights During our sessions I’d like to: • Recreate and dissect customer-reported issues, latency, jitter and packet-loss cases, call-flow misconfigurations, webhook failures and SIP registration problems. • Step through live debugging with tools such as the Twilio Console, CLI, ngrok tunnels, Wireshark traces and call log analytics. • Build a repeatable approach to isolating problems across TwiML, media, and carrier layers so I can independently resolve tickets faster. My end goal is to develop deep expertise in Twilio Voice. I’ll keep employer details private f...

    $9 / hr Average bid
    $9 / hr Avg Bid
    8 bids

    I need assistance setting up Visual Studio Code on my Windows machine. Key Requirements: - Configure VS Code for C, C++, SQL, and Python development. - Install necessary extensions and plugins. - Set up debugging and terminal environments for each language. - Provide a brief setup guide for future reference. Ideal Skills and Experience: - Proficient in VS Code - Experience with Windows OS - Familiar with C, C++, SQL, and Python programming languages - Good documentation skills

    $10 Average bid
    $10 Avg Bid
    45 bids

    ...architecture topics. My immediate priority is to deepen my practical understanding of TwiML and complex call-flow design, then apply that knowledge to day-to-day support situations that involve call-quality issues. Here is what I’d like our sessions to cover over time: • Twilio Programmable Voice fundamentals, with an emphasis on writing and iterating TwiML for multi-step flows. • End-to-end debugging of voice calls: latency and jitter analysis, packet-loss mitigation techniques, and making the most of Voice Insights and related diagnostic tools. • Best practices around webhooks, SIP trunk configuration, and overall service hardening so that I can spot and resolve customer issues faster. The format I have in mind is a live, screen-shared session (abou...

    $5 / hr Average bid
    $5 / hr Avg Bid
    7 bids

    ...improvements. Demonstration of all agreed features before final delivery. Freelancer Requirements Proven experience with Microsoft Outlook integrations. Strong understanding of Microsoft Graph API and OAuth. Experience developing email extraction or data processing tools. Experience working with large datasets. Ability to develop professional desktop applications. Strong problem-solving and debugging skills. When Applying Please include: Your previous experience building Outlook or email extraction applications. Your recommended technology stack and reasons. How you would handle large mailboxes and Microsoft API limitations. Whether you can support PST and OST extraction. Your estimated development timeline. Your total project cost. Examples of similar projects y...

    $9 / hr Average bid
    $9 / hr Avg Bid
    85 bids

    ...deliver clean, tested code so the homepage looks polished on common iOS and Android devices. Please make sure your adjustments do not disturb the tablet and desktop views. Deliverable: updated stylesheet (or component-level overrides) and a short note of what was changed so I can keep the repository in sync. Feel free to use Chrome DevTools, Safari responsive mode, or any framework-specific debugging tools you prefer; I simply need the final result verified on standard mobile screen sizes before we wrap up....

    $2 / hr Average bid
    $2 / hr Avg Bid
    79 bids

    ...automated testing and an established architecture. The ability to understand and extend an existing codebase is critical. Who I am looking for I want a strong product-minded engineer, not simply a prompt engineer. You should be comfortable with: - Python/FastAPI - React/TypeScript - PostgreSQL - APIs and authentication - LLM/agent applications - structured outputs and tool calling - testing and debugging - Git - production deployment - understanding stateful conversational systems - designing maintainable software rather than accumulating hacks Education/EdTech experience is a plus. Very important I already have a clear product/architecture direction. I am not looking for someone to throw away the existing architecture and rebuild it using the latest AI framework. I value: - clea...

    $235 Average bid
    $235 Avg Bid
    72 bids

    ...corrections where required - Run relevant tests and confirm the implementation works correctly - Create/update Git branches and pull requests - Resolve minor code or merge conflicts when needed - Keep Jira status updated - Log worked hours accurately Required knowledge: - Java / Spring Boot or Quarkus - Angular / TypeScript - Git - Ability to understand and review an existing codebase - Good debugging and code-review skills You do not need to set up the project or build everything from scratch. The main expectation is to use Claude Code effectively, understand the changes, verify the implementation, and take responsibility for the final code. Working hours are flexible, and we can discuss the working arrangement, availability, remote access setup, and other details further Pl...

    $3 / hr Average bid
    $3 / hr Avg Bid
    79 bids

    My WordPress installation is fully up to date, yet right after yesterday’s Contact Form 7 update the entire site and wp-admin went down with a fatal error until I renamed the plugin folder throu...anything new. The job is simply to identify and eliminate whatever is breaking Contact Form 7 so the existing forms function exactly as they did before the update. Deliverables • Contact Form 7 activates without fatal errors • All current forms load, submit, and send emails correctly • A full explanation of what caused the issue and the steps you took to fix it. Feel free to enable WordPress debugging, review server error logs, or stage the fix in a safe environment—whatever you find most efficient. Once everything is working again I’ll test each form...

    $143 Average bid
    $143 Avg Bid
    276 bids

    ...animal characters - Configure character rigs, animations and movement - Implement player gameplay and computer-controlled players/bots - Implement real-time multiplayer functionality - Develop game UI and required screens - Implement gameplay interactions and mechanics - Integrate camera, sound, VFX and animations - Optimize the game for Android and iOS - Prepare Android/iOS builds - Testing, debugging and performance optimization - Maintain clean, scalable and maintainable code 3D Character Experience Proper 3D characters will be required; primitive shapes/placeholders are not sufficient for the final game. Creating 3D models from scratch is NOT mandatory. We can use suitable existing/free/licensed assets. The developer should be comfortable with: - Importing 3D models into Unit...

    $1666 Average bid
    $1666 Avg Bid
    46 bids

    I run an antique restoration business in Australia and our WordPress “Contact Us” form is failing—visitors see an “Error messages when submitting form” notice and no enquiry ever reaches my inbox. Each missed message is a lost lea...enquiries land in the correct mailbox. • Run at least three real-world test submissions and forward the headers so I can see proof of delivery. • Provide a concise summary of the fix and any configuration changes for future reference. You’ll have full WordPress admin access and cPanel if required. Please be comfortable with common form plugins, WP-Mail, SMTP tools, DNS/MX checks, and basic PHP debugging. I’m available for quick responses during Australian business hours but can grant credentials im...

    $82 Average bid
    $82 Avg Bid
    209 bids

    I can not share the Java Script, I Would need someone to work with me over a Google Meet Or a Web Ex. I need a sharp set of eyes on the JavaScript embedded in one of my PingOne Advanced Identity Cloud customer journeys. The problem shows up only during the login process. Issue obser...connectors already configured). When you hand the work back, I expect: • The corrected JavaScript with clear inline comments • A brief change log explaining what was wrong and how you resolved it • Evidence of successful authentication (screenshot or short screen-capture of the flow, plus console logs) If you have deep knowledge of PingOne policies, JavaScript promise handling, and OAuth/OIDC debugging, this should be a quick win. Let me know how soon you can start and your estimat...

    $29 Average bid
    $29 Avg Bid
    137 bids

    ...Testing System Testing End-to-End Testing API Testing Database Testing Agile/Scrum SDLC STLC Advanced QA Skills Test strategy and test planning Automation framework architecture Framework development from scratch Automation best practices Code review Test coverage analysis Requirement analysis Risk-based testing Release validation CI/CD integration Parallel test execution Cross-browser testing Debugging and troubleshooting Root cause analysis QA process improvement Preferred Experience Experience in Banking/Finance, Insurance, Manufacturing, or Enterprise applications is preferred. The candidate should be able to explain concepts clearly, review existing automation frameworks, identify issues, suggest improvements, and provide practical hands-on guidance. Experience Required: 10+...

    $262 Average bid
    $262 Avg Bid
    47 bids

    ...connectivity. • Support camera, speaker, and microphone integration. • Coordinate with the IoT/interface engineer where applicable. • Troubleshoot electronics and firmware during integration. • Deliver applicable firmware/source code, configurations, and wiring information. Preferred Skills / Experience ESP32 or Similar MCU; Embedded C/C++; Sensors; RGB/RGBW LEDs; Displays; Wi-Fi; BLE; Electronics Debugging; Soldering; Hardware/Firmware Integration COMPENSATION - $700 USD FOR THIS TEAM MEMBER Fixed Price: $700 USD for this individual position. The selected professional for this position will receive $700 USD total for successful completion of the complete assigned scope. HappyMat is assembling a multidisciplinary engineering team. Each team member is hired ...

    $607 Average bid
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    101 bids

    The Vineta plugin on my site breaks its intended functionality every single time it runs. Core actions refuse to execute, throwing fatal errors and blocking users from completing tasks. I need a developer who can dive straight into the Vineta codebase, trace the root cause of these always-present issues, patch them cleanly, and verify the fix across current WordPr...fully tested source files with the functionality bug resolved • Clear, step-by-step changelog explaining what was fixed and why • Confirmation that the updated plugin installs, activates, and runs error-free on a fresh WordPress instance Staging access, repository credentials, and full error logs are ready as soon as you are. Let me know your expected timeline and a brief note on similar debugging work y...

    $210 Average bid
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    90 bids

    Our mobile app is already feature-complete and sitting in the “Near completion” phase, yet a handful of stubborn functional bugs are keeping us from hitting the publish button. I need a React Native developer who can collaborate directly with our in-house team, dig into the codebase, and resolve those issues so we can move s... Primary focus: • Identify and squash every functional bug currently flagged. • Verify each fix on both platforms. • Leave concise notes if you spot performance or UI areas we can refine later. must have extensive experience in testing subscription flows Once all open tickets are closed and the builds are stable, we’ll wrap and proceed to App Store and Google Play submission. If late-stage debugging is your specialty and you ...

    $35 / hr Average bid
    $35 / hr Avg Bid
    347 bids

    ...* Good knowledge of Core PHP, OOP and MVC architecture * Experience with MySQL or MariaDB and database design * Knowledge of HTML5, CSS3, JavaScript and AJAX * Experience developing and integrating REST APIs * Familiarity with Git, GitHub or GitLab * Understanding of authentication, sessions, CSRF protection and input validation * Ability to build responsive, secure web applications * Strong debugging and problem-solving skills * Understanding of deployment and server-side development Experience integrating AI APIs such as OpenAI, Google Gemini, Claude or DeepSeek into PHP applications is a plus. **What we offer** You will work on real products, contribute ideas and help shape how our applications are built. We value clear communication, careful development and a lasting worki...

    $645 Average bid
    $645 Avg Bid
    340 bids

    ...from someone experienced with the existing stack. What I need help with: Identify and fix existing backend/API issues Debug code Resolve frontend-to-backend communication problems Fix request/response or JSON-related issues Check existing API logic and suggest corrections Explain the root cause of the issues so I can continue working on the project myself This is a short-term debugging/mentoring task, expected to take around 1–2 hours. I would prefer someone who has strong experience with and React/Angular and is comfortable joining an existing codebase, understanding it quickly, and solving issues without unnecessary changes. Please mention your relevant experience with projects and your availability for a 1–2 hour session....

    $16 Average bid
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    95 bids

    ...systems - Troubleshoot problems remotely and provide ongoing technical support Important: This is NOT a project to build a new CRM from scratch. The selected developer should be comfortable working with existing Apps Script code. Required Skills: - Google Sheets - Google Apps Script - JavaScript - CRM Automation - Google Workspace - Spreadsheet Automation - API Integration - Troubleshooting & Debugging Long-Term Opportunity: Initially, we will assign a small task to check your understanding of our system. If satisfied, we aim to continue with regular support and future development. To Apply: Please share: 1. Your experience with Google Apps Script and Google Sheets CRM. 2. Examples of previous CRM/automation projects. 3. Experience working with existing Apps Script code. ...

    $82 Average bid
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    53 bids

    I am looking for freelance projects involving **AI application development, Python backend development, RAG systems, voice AI, chatbots, API development, and business automation**. I specialize in building practical AI-powered applications using: - Python & FastAPI - AI agents and conversational AI - RAG ...WebSockets, Exotel telephony, WhatsApp integration, Google Calendar, Docker, and automated testing. I am interested in working with clients who need a **custom AI solution rather than a basic chatbot**, including startups, businesses, researchers, and developers looking to integrate AI into an existing product. I can work on both **complete projects and individual development tasks**, including debugging, API development, AI integration, backend development, and deploymen...

    $255 Average bid
    $255 Avg Bid
    78 bids

    ...DPD, calibration, gain/phase correction, multi-carrier processing, timing/synchronization, and high-speed ADC/DAC interfaces. The engineer will be responsible for FPGA architecture, RTL/HLS/IP implementation, block integration, clock-domain and data-path design, fixed-point optimization, resource utilization, latency and throughput optimization, timing closure, simulation, hardware validation, debugging, and performance characterization!! The platform should support configurable 5G NR bandwidths and numerologies, multiple carriers, 2×2 and 4×4 operation, and integration between the O-RAN fronthaul, Low-PHY/DFE processing, and RF/DAS hardware! Preferred platform is AMD Xilinx Versal, with the final device selected according to processing, bandwidth, interface, and r...

    $927 Average bid
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    36 bids

    We are seeking a practical engineer to develop, integrate and troubleshoot intelligent electrical and electronic systems combining hardware, embedded software and automation. T...mixed-signal circuits, PCB design, schematic modification, component selection, BOM and prototype manufacturing. Additional work may include power supplies, MOSFET and relay circuits, battery systems, industrial control, IoT devices, wireless communication, monitoring systems and electromechanical integration. Strong practical experience with PCB bring-up, oscilloscope/logic-analyzer testing, firmware debugging, fault diagnosis, prototype assembly, system validation and first-revision improvements is required. Experience integrating complete smart electrical systems from hardware through software is high...

    $677 Average bid
    $677 Avg Bid
    25 bids

    ...power-management and battery-charging circuits, and preparing complete manufacturing files (Gerber, pick-and-place, assembly drawings). On the firmware side I’ll rely on you for robust real-time control that makes full use of timers, PWM, interrupts, DMA and serial interfaces (UART, SPI, I²C, CAN, RS-485/Modbus). Expect to bring up prototypes on the bench, use oscilloscopes and logic analyzers for debugging, and iterate quickly until the system is stable. Typical deliverables: • Finished schematics and PCB layout files • Clean, well-documented firmware with build instructions • Compiled binaries and source code in a shared repository • Production-ready BOM with part numbers and availability notes • Test reports, oscilloscope cap...

    $429 Average bid
    $429 Avg Bid
    17 bids

    I’m looking for a full-time Laravel specialist who can dedicate the next four weeks (40 hrs/week) exclusively to my project. Your main mission will be squashing a backlog of bugs in an existing Laravel 9 codebase while, in parallel, wiring in a new payment-gateway API so we can start processing transactions smoothly. Here’s... • All high-priority bugs marked “resolved” in the tracker and closed after QA re-test. • Payment flows (initiate, capture, refund) succeed end-to-end in staging and are covered by automated tests. • No new critical bugs introduced during the month. I’ve set aside 10 k INR for this one-month contract, payable in weekly milestones as we hit the goals above. If you thrive on deep Laravel debugging and can move f...

    $275 Average bid
    $275 Avg Bid
    86 bids

    ...repetitive steps in both Excel and Word with clean, reliable VBA macros. In Excel the routine involves importing raw CSV files, re-formatting them, and generating summary pivot tables. In Word I’d like a macro that pulls those finished tables into a report template, updates reference fields, and exports the final document as PDF—all triggered by one or two buttons. If you’re comfortable writing and debugging VBA in both applications, this job should be straightforward. Please build the code in a way that is easy for me to maintain: use clear variable names, add short inline comments, and keep everything in one macro-enabled workbook (.xlsm) and one macro-enabled document (.docm). Acceptance criteria • Excel macro processes a sample CSV without errors an...

    $5 / hr Average bid
    $5 / hr Avg Bid
    23 bids

    ...motor commutation, hardware-timed encoder decoders, and deterministic fault monitoring. Communication Bus: High-speed communication protocol implementation (CAN FD, EtherCAT, or RS-485) between the central controller and distributed joint drivers (≥1 kHz loop rate). Deliverables: Firmware source code, FPGA bitstreams/logic specifications, register maps, communication interfaces, and low-level debugging utilities. Track D: Gait Generation, Dynamic Balancing & Locomotion Primary Focus: Physics simulation, control theory, and Sim-to-Real deployment. Simulation Setup: Rigorous URDF/MJCF kinematic and dynamic model generation with precise inertia matrices, mass distribution, and friction parameters. Setup in Isaac Lab / Isaac Gym or MuJoCo. Locomotion Policy / Control Ar...

    $6 / hr Average bid
    $6 / hr Avg Bid
    12 bids

    ...the prototype; - perform oscilloscope and LCR measurements; - debug the electronics; - bench-test the system and make necessary first-prototype corrections. Practical bench experience is important. Preferred experience: - PCB design and mixed-signal electronics - low-noise analog circuits - STM32 - power electronics / MOSFET switching - inductive loads or coils - ADC/data acquisition - hardware debugging and prototype testing The project is privately funded and the budget is limited, so I’m looking for a practical, cost-effective implementation partner rather than a large consultancy. Please provide your approximate engineering cost separately from components, PCB fabrication/assembly, and testing costs. I am based in London, but the final prototype is intended for Dubai, U...

    $1451 Average bid
    $1451 Avg Bid
    75 bids

    Iam looking for MATLAB/Simulink support for interview preparation and day-to-day job activities. I would prefer someone with hands-on experience in embedded systems, particularly in embedded software testing and validation. Experience in the following areas would be helpful: MATLAB, Simulink, Stateflow, MIL/SIL/HIL testing, requirements-based testing, test case development, debugging, model analysis, and embedded system validation.

    $32 / hr Average bid
    Local
    $32 / hr Avg Bid
    35 bids

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