Debugging jobs

...already spent time some time attempting to troubleshoot... although frankly it is too much of a headache for me to do much else that very basic troubleshooting. You should be comfortable with every layer of OpenClaw and computers in general—environment variables, brain switching, API key management, the Telegram bridge, migrating OpenClaw from one system to another—and ideally have experience debugging it on macOS/Linux servers. Once the immediate issues are resolved I’d like to keep you on call for future tweaks, software installations, device migrations, maintenance, or troubleshooting sessions, so clear documentation changes you apply is important. Deliverables: • OpenClaw launches normally on my Mac. • Primary brain successfully changed to Gr...

...for an agency, staffing team, or layered delivery model. We are looking for one highly capable person who can produce consistently strong work. What You’ll Do Build, improve, and maintain Python applications, scripts, APIs, and backend services Work across a range of consulting projects with changing client needs and priorities Use AI tools effectively to accelerate development, research, debugging, and delivery Translate business requirements into clean, practical technical solutions Deliver work quickly with strong attention to quality and detail Communicate progress, blockers, and decisions clearly in writing Collaborate with internal leadership and support US-based client needs Manage your own time and tasks with minimal supervision Requirements 3–5 ye...

...products with , React and TypeScript Strong understanding of modern frontend architecture, reusable components, and efficient state handling Real experience integrating blockchain logic on EVM-compatible networks Practical use of libraries such as Viem, ethers, or similar tools Ability to work on sensitive flows: balances, transfers, address validation, transaction states Experience debugging complex issues and improving production stability Strong coding standards focused on scalability and maintainability Strong Plus Previous work on real fintech products Experience with smart wallets or account abstraction Background in wallets, payment systems, digital onboarding, or advanced authentication flows Good product sense for financial UX simplicity Working Model Freela...

We are looking for an experienced Full Stack Developer to finalize and deploy a nearly completed web application. The project is approximately 90% finished, and we need a skilled developer t...securely, efficiently, and reliably Project Status ~90% completed Core architecture already built Requires final integration, security configuration, and deployment Required Skills Strong experience with Backend development using Node.js Experience with Supabase (Auth, Database, Storage, RLS) API integration and backend architecture Authentication & security implementation Debugging and production deployment experience Experience integrating AI or chatbot systems If you read job detail carefully, started the proposal with "I can do it", if not will be ignored. Budg...

...environment. Responsibilities: - Assist in developing and maintaining websites and web applications. - Write clean, efficient, and well-documented code using HTML, CSS, JavaScript, and React/Vue.js (or similar). - Help implement responsive designs to ensure websites work across various devices. - Collaborate with team members to troubleshoot and resolve technical issues. - Assist in testing and debugging web applications. - Participate in code reviews and learn best practices. Requirements: - Basic knowledge of HTML, CSS, and JavaScript. - Familiarity with a modern JavaScript framework like React or Vue.js is a plus. - Understanding of responsive design principles. - Eagerness to learn and grow in the web development field. - Strong communication skills and the ability to work ...

...held in English at a solid B2–C1 level, so you must feel comfortable leading nuanced, in-depth discussions. The interviews revolve around full-stack development. Most applicants claim experience with JavaScript/React, Python/Django, and Java/Spring, and many also list C#. I expect you to move effortlessly among these stacks, probing their real-world knowledge of architecture, coding standards, debugging, testing, and deployment. Feel free to shift the conversation when a candidate mentions additional technologies, yet keep the core assessment anchored in those four primary stacks. Here’s how we’ll work together: • Before each session I will forward the résumé and any notes so you can tailor questions. • During the call you will show t...

We are looking for a skilled React and Developer to join our remote engineering team. You will be responsible for building scalable, high-performance features across our ticketing and event management platform using modern...Optimise application performance and ensure responsiveness • Participate in code reviews and technical planning Required Skills • Strong experience with NestJs and React • Solid understanding of PostgreSQL • Experience deploying and managing applications on AWS • Understanding of REST APIs and modern web architecture • Familiarity with Git and CI/CD workflows • Strong problem-solving and debugging skills Nice to Have • Experience working on SaaS platforms • Knowledge of serverless architecture • Fami...

We are looking for a skilled React and Developer to join our remote engineering team. You will be responsible for building scalable, high-performance features across our ticketing and event management platform using modern...Optimise application performance and ensure responsiveness • Participate in code reviews and technical planning Required Skills • Strong experience with NestJs and React • Solid understanding of PostgreSQL • Experience deploying and managing applications on AWS • Understanding of REST APIs and modern web architecture • Familiarity with Git and CI/CD workflows • Strong problem-solving and debugging skills Nice to Have • Experience working on SaaS platforms • Knowledge of serverless architecture • Fami...

...containing some form structures and migrate/rebuild it in the new architecture using + Supabase + Vercel. Worker App Functions: The mobile app must support: - Login/logout. - Timesheets and hourly/daily task logs. - Submitting forms with file uploads. Communication Requirement: The developer must be comfortable with occasional screen sharing using Chrome Remote Desktop for walkthroughs or debugging. Number of Pages: Approximately 150 form pages based on repeating template structures. Budget: $150 USD (strictly non-negotiable). No additional payments will be made later. Start Date: Immediate....

...resolve issues • Participate in code reviews, testing, and debugging • Work with the product team to translate user requirements into functional mobile features • Improve UI/UX performance and help ensure app stability • Support in managing API integrations and data handling • Stay updated with the latest Android development tools and best practices Ideal Candidate : • Basic to intermediate experience with Kotlin for Android development • Familiarity with Android Studio and Android SDK • Understanding of key Kotlin concepts like val vs var • Exposure to architectural patterns such as MVVM or MVP • Experience with RESTful APIs and data loading in mobile apps • Familiarity with Jetpack Compose or XML-based UI layouts • Un...

...diagnostic tool Required Expertise Only apply if you have real experience with: Dynamics 365 Business Central Inventory costing engine Average Cost logic Item Ledger Entries Value Entries Cost Adjustment internals debugging cost propagation issues We are not looking for general ERP consultants. Deliverables Identify the root cause of the costing issue Restore the correct average cost for the item Ensure cost adjustment works correctly again Provide guidance to prevent this issue in the future Bonus Skills AL Development deep debugging of Business Central cost engine experience fixing corrupted costing chains...

...** We are looking for an experienced Solana blockchain developer with strong AWS server infrastructure expertise to help diagnose, fix, and optimize production-level code issues. This is not a beginner role. You must have hands-on experience with Solana programs, RPC interactions, and backend deployment inside AWS environments. You will be working on live Solana-based systems that require debugging, performance optimization, and infrastructure-level troubleshooting. 90% Of The Code Is Already Complete, You will be responsible for: 1. Diagnosing root causes of system failures or transaction errors. 2. Fixing broken logic, failed transactions, or stalled processes. 3. Ensuring stable, consistent execution under load. 4. Optimizing performance, speed, and reliability. 5. Prov...

1. Payment Gateway Optimization (Razorpay) Goal: Switch from manual UPI ID entry to UPI Intent (auto-opening apps like GPay/Paytm) or Turbo UPI. Action: Integrate the Razorpay Native SDK (not just a WebView). Scope: Implement this in both the Customer App (for order payments) and Delivery App (for wallet top-ups or security deposits). 2. Call Masking API Debugging Goal: Ensure privacy by masking phone numbers between Customers, Delivery staff, and Restaurants. Action: Audit current API integration across all three apps. Identify why errors occur during the "click-to-call" handshake and fix the state management handling the call triggers. 3. Dynamic Incentive Schemes (UI/UX) Goal: Display real-time earnings potential to drivers based on the new admin panel structures. ...

I need a comprehensive test of my Django application. The goal is to identify and rectify security vulnerabilities, functional bugs, and performance issues. Key areas of concern: - User authentication - Data handling - File loading times Ideal skills and experience: - Proficiency in Django - Expertise in security testing - Experience with performance optimization - Strong debugging skills Please provide a detailed report on findings and recommendations for each issue.

I have an existing AI pipeline that handles text data, and the data transformation stage has started throwing errors that halt the entire workflow. The cleaning and feature-extraction steps are stable, so the problem is isolated to the...input files, and the error logs so you can reproduce the issue locally. Your task is to trace the root cause, correct the code, and return a fully working transformation module that plugs straight back into the rest of the pipeline. A brief rundown of what you changed and a quick verification run (unit test or notebook) that shows the fix in action will close the loop. If you’re comfortable debugging text-handling routines that rely on libraries such as pandas, spaCy, NLTK or similar—and you can turn this around quickly—let&rsqu...

...(lamp/fan) using MOC3020 opto-driver + BTA16 TRIAC. - DC loads (like RGB LED strips) using IRF540N MOSFETs. Key features: - Integrated AC-DC power supply with bridge rectifier, dual 7805 regulators, and ESP32 3.3V regulator. - Optical isolation between ESP32 logic and high-voltage circuits. - External KF301 series connectors for AC input, AC load output, and 12V RGB outputs. - Status LEDs for debugging and system monitoring. Requirements: - Compact and small form factor - Standard KF301 series connectors - Improvement related safety - Songle high Power 30a relay replacement - 240ac to 5v 2a DC power supply design - Require editable full source file Ideal skills and experience: - Expertise in PCB design - Experience with high-voltage and low-voltage circuit integration - Fa...

We need a well-rounded technical project manager with expertise in UI/UX as well as function to help in testing and debugging web and mobile applications You need to have a pixel-perfect eye for UI/UX design and also understand function in order to work with both the designer & developer to ensure projects come out looking good and also stable and handle deadlines well Payments always made per project with scope defined upfront

...** We are looking for an experienced Solana blockchain developer with strong AWS server infrastructure expertise to help diagnose, fix, and optimize production-level code issues. This is not a beginner role. You must have hands-on experience with Solana programs, RPC interactions, and backend deployment inside AWS environments. You will be working on live Solana-based systems that require debugging, performance optimization, and infrastructure-level troubleshooting. 90% Of The Code Is Already Complete, You will be responsible for: 1. Diagnosing root causes of system failures or transaction errors. 2. Fixing broken logic, failed transactions, or stalled processes. 3. Ensuring stable, consistent execution under load. 4. Optimizing performance, speed, and reliability. 5. Prov...

Fix & Improve Financial Modeling Accuracy for Real Estate Analysis Platform I have a real estate analysis app built with Python FastAPI. I need help checking and fixing a calculation issue ...Accuracy for Real Estate Analysis Platform I have a real estate analysis app built with Python FastAPI. I need help checking and fixing a calculation issue in the backend. Some of the financial numbers are not coming out correctly, so I want someone to review the logic and fix the accuracy problem. This is a small task for now, not a full rebuild. You should be comfortable with: - Python - debugging calculation logic - financial formulas - Real estate experience is a plus. Please include your proposal your related experience regarding Real Estates Start your proposal with Financial Mo...

...** We are looking for an experienced Solana blockchain developer with strong AWS server infrastructure expertise to help diagnose, fix, and optimize production-level code issues. This is not a beginner role. You must have hands-on experience with Solana programs, RPC interactions, and backend deployment inside AWS environments. You will be working on live Solana-based systems that require debugging, performance optimization, and infrastructure-level troubleshooting. 90% Of The Code Is Already Complete, You will be responsible for: 1. Diagnosing root causes of system failures or transaction errors. 2. Fixing broken logic, failed transactions, or stalled processes. 3. Ensuring stable, consistent execution under load. 4. Optimizing performance, speed, and reliability. 5. Prov...

Fix & Improve Financial Modeling Accuracy for Real Estate Analysis Platform I have a real estate analysis app built with Python FastAPI. I need help checking and fixi...Accuracy for Real Estate Analysis Platform I have a real estate analysis app built with Python FastAPI. I need help checking and fixing a calculation issue in the backend. Some of the financial numbers are not coming out correctly, so I want someone to review the logic and fix the accuracy problem. This is a small task for now, not a full rebuild. You should be comfortable with: - Python - debugging calculation logic - financial formulas - Real estate experience is a plus. Please include your proposal your related experience regarding Real Estates Budget: $15-20 fixed Start your proposal with Financial Mo...

My Shopify store needs rapid repair and polish. Every core area—homepage, product pages, and even checkout—goes out of alignment on several screen sizes, making the layout unresponsive. Alongside the visual glitches, certain cart and discount features behave unpredictably, hinting at deeper functionality problems. I need someone who can dig into Liquid, HTML, SCSS, and JavaScript, ...mobile browsers. • Cart drawer, discount logic, and other interactive scripts return zero console errors. • No new visual or functional regressions appear elsewhere in the theme. • Updates are delivered through Git or a duplicate theme so I can review before going live. If you are confident you can turn this around on the timeline, tell me when you can start and how you plan ...

I still have the RPN listing I wrote years ago for Free42, but when I re-key it into both my physical HP-42S and the Free42 app on my iPhone it simply refuses to give the expected results—no error messages, just wrong answers. I need ...key-entry or .raw import into Free42 / HP-42S • A brief explanation of what was wrong and why your fix works • (Optional but appreciated) any tips for transferring or storing the program safely between devices Acceptance is simple: load your version, run my sample data, and watch it return the expected figures every time. Experience with HP-42S keystroke programming, Free42, and general RPN debugging will make this a quick win. Let me know if you need any extra information—I’m happy to supply whatever helps get this ...

The UWB/BLE Firmware Engineer, LVGL Touch using ESP32 will be responsible for developing and optimizing firmware for UWB and BLE communication protocols, integrating LVGL touch functionality on ESP32 platforms. The role involves designing, coding, testing, and debugging embedded systems to ensure efficient and reliable performance of touch interfaces and wireless communication. Strong experience with ESP32, UWB/BLE protocols, and LVGL touch integration is required.

...such as: Footswitch Handset/headset interfaces Experience working with low-level hardware debugging Web Interface Development Experience building embedded web configuration interfaces Knowledge of: HTTP/HTTPS servers on embedded devices HTML / CSS / JavaScript UI Backend configuration interfaces (CGI, Python, C, or similar) Firmware Development & Deployment Experience building firmware update mechanisms Secure update strategies and version management Experience packaging firmware images for embedded devices Ability to maintain backward compatibility where possible System Diagnostics & Logging Experience implementing Syslog, logging systems, and diagnostic tools Network packet capture and debugging tools Troubleshooting SIP and RTP traffic Security Experience im...

...CLI. PROBLEM: Stripe webhook signature verification works locally, but fails in production. Local testing: stripe listen --forward-to http://localhost:3000/api/webhook Result: 200 OK Webhook verified successfully Production testing: stripe listen --forward-to Result: 400 Bad Request No signatures found matching the expected signature Debugging confirms: → Buffer = true Meaning the Express route receives a raw body, but the payload may be altered upstream (likely by Nginx or Cloudflare) before Stripe signature verification. WHAT I NEED: A developer to: • Diagnose the cause of the Stripe webhook signature failure in production • Configure Nginx and Express correctly to preserve the raw webhook payload • Verify middleware

I have two separate systems hosted under the same hosting provider: 1. Online course website 2. Another application with an admin panel Both are separate websites but hosted under the same control panel. Their login databases exist under the same hosting environment. Recently after a server/PHP upg...________________________________________ Future Phases (Separate Projects) If this phase goes well, additional development will follow including: Phase 2 • Razorpay course automation • WhatsApp notification integration Phase 3 • Vimeo completion tracking • Automatic PDF certificate generation These will be separate feature enhancements/projects. ________________________________________ Preferred Skills • PHP debugging • Experience with legacy systems •...

I...small but continuous, so I’m offering a fixed monthly retainer in the ₹10k–20 k range for roughly full-time availability. Everything is remote; we collaborate over Teams and manage work in Jira. To fit in smoothly you’ll need: • Solid core ABAP skills, including internal-table performance tricks • Comfortable with CL_SALV and FM-based ALV, Smart Forms or basic Adobe Forms • Confidence in debugging, performance tracing and transport management Acceptance for each delivery is simple: object activated without errors, transports released, unit test or sample data proving the requirement, and my functional lead signing off in Jira. If that rhythm suits you, tell me about a recent SD or IDoc project you handled and your usual turn-around time ...

...Involved The freelancer must have experience working with: • Google Tag Manager • Google Analytics 4 (GA4) • Google Ads conversion tracking • Cliniko online bookings • Cross-domain / booking system tracking Required Skills Applicants must demonstrate experience with: • Google Tag Manager event tracking • GA4 conversion event setup • Conversion tracking for booking platforms or SaaS systems • Debugging tracking with Tag Assistant / GA4 DebugView Bonus if you have worked with: • Cliniko Deliverables The freelancer must: • Fully configure the tracking setup • Test and confirm conversions are firing correctly • Provide a short explanation of how the setup works • Confirm Google Ads is receiving conversion...

I'm encountering a persistent error on the Django admin interface. The error occurs every time I try to access a specific page. Error Details: - TemplateSyntaxError at /admin/pages/page/ - Caught AttributeError while rendering: 'NoneType' obj... The error occurs every time I try to access a specific page. Error Details: - TemplateSyntaxError at /admin/pages/page/ - Caught AttributeError while rendering: 'NoneType' object has no attribute '_meta' I'm looking for an experienced Django developer who can troubleshoot and resolve this issue. Ideal skills and experience include: - Proficiency in Django and its admin interface - Strong debugging skills - Familiarity with TemplateSyntaxError and AttributeError in Django Please provide your appro...

I need to track down and eliminate a series of bugs on the front-end of my web application, which is written entirely in React. The issues range from occasional rendering glitches to console warnings that appear after the latest feature merge. Everything else—backend, API, deployment pipelines—is functioning as expected, so the task is squarely focused on the React layer. You will dive into the existing codebase (Git repository access provided), reproduce each problem, identify the root cause, and implement solid, maintainable fixes. Familiarity with React hooks, functional components, state management, and modern tooling (Webpack, Babel, ESLint, Chrome DevTools, Jest) will be essential. Deliverables: • Documented reproduction steps for each bug • Clean, well-comm...

Project Title Hourly Technical Support for a Production Automation System (Python + Linux + Playwright) Description I am looking for a freelancer with experience in Python, Linux, Playwright, and production automation support to provide hourly technical support for a system that is already running on a VPS. The goal is not ...Proposal Please include: Your hourly rate in USD Your experience with Python, Linux, Playwright, Telegram, and Twilio Whether you offer a monthly block of hours or only on-demand support Your estimated response time for incidents Examples of similar automation support or production support work Preferred Qualifications Experience supporting bots or automations running 24/7 Experience debugging issues on a VPS Experience with systemd, logs, and proces...

... such as changing the notification behavior, fixing form validation, or resolving small logic bugs. > Address issues that may have caused store rejections. > General debugging and testing of apps on real devices (simulators/emulators for initial work). - Required Skills & Experience: To be considered for this project, you should meet the following requirements: > Proven experience developing mobile apps for iOS (Swift/Objective-C), Android (Kotlin/Java), or using cross-platform frameworks such as Flutter or React Native. > Strong ability to work with and troubleshoot existing codebases > Familiarity with key debugging tools like Xcode, Android Studio, Chrome DevTools, Firebase Crashlytics, and others. > Strong communication skills, with the ab...

...Responsibilities Provide real-time development using Golang (Go). Assist in debugging, troubleshooting, and optimizing Golang-based applications. backend API development and microservices architecture built with Golang. Work with TypeScript-based services or integrations when required. Collaborate with the development team to quickly resolve technical issues. Guide on best practices for building scalable, secure, and efficient services. Ensure smooth deployment and performance monitoring of backend services. Required Technical Skills Golang (Go), TypeScript, REST APIs, Microservices Architecture, Docker, Kubernetes, Git, PostgreSQL/MySQL, MongoDB, Redis, gRPC, JSON, Linux, CI/CD Pipelines, AWS/GCP, Unit Testing, Debugging & Performance Optimization, Message Queues (Kaf...

...correctly Confirm the system behaves like a proper point-of-sale system Improve workflow where necessary 4. Final Testing Test the system for reliability Ensure information displays correctly Confirm the system is ready for daily real-world use Ideal Developer Strong Laravel experience Experience working on POS or inventory systems Able to understand and improve existing codebases Strong debugging skills Important – Fixed Fee Requirement Please provide a single fixed project quotation for reviewing and completing the system. Do not submit quotations with individual pricing for each task or module. We are looking for one developer to review the entire system and deliver a fully functioning platform. If you cannot quote a fixed price for the complete project, ...

Need help debugging what is going wrong with my CNC machining on a Makera Carvera. I am trying to machine a keyring and I have a few issues: 1) I'm getting scratches down the bottom of the model, I think from the finishing step 2) I'm not sure if my selection of bits is correct for what I'm trying to do, I'm using a 3mm flat end metal for roughing then a 1mm ball nose for finishing, its resulting in a 130MB+ file which is taking many hours to upload to the machine and the quality coming out isn't amazing 3) Down the center line of the keyring I'm getting a flat section which I'm certain is the roughing depth which I'm setting to between 0.1mm and 0.3mm, the higher I set it the worse it gets, it seems the finishing pass isn't going in the...

My site runs on Thrive Architect and, out of the blue, the page-builder interface stopped responding. The sidebar won’t open, elements can’t be selected, and I’m effectively locked out of editing existi...Identify and eliminate the conflict preventing the page-builder from rendering. • Restore full editing access so I can use the visual interface as normal. • Explain what went wrong and outline any preventive steps I should take. You’ll receive admin and FTP access upon kickoff and I’ll be available to test fixes in real time. Please be comfortable working with Thrive Architect, WordPress debugging tools (WP-DEBUG, browser console, etc.), and standard conflict-isolation methods. Once I can reliably open the builder, edit a page, and save ...

...that streamlines how our engineers create, debug, validate, and analyse test programs running on Automated Test Equipment (ATE). Today the workflow jumps between scripts, spreadsheets, and ad-hoc notes; the new application should bring everything into one place and let us move from first code draft to signed-off validation far faster. Core functions I want to see working together: • Powerful debugging utilities that plug directly into our existing Python test scripts, pause execution, inspect variables, and store snapshots for later review. • Data analysis and reporting that turns raw ATE logs into clear plots, KPIs, and exportable PDF/CSV packs automatically after each run. • A validation checklist engine so every release of a test program is tracked agains...

I am looking for an experienced MERN Stack Developer to manage and support my clients' ongoing gam...Responsibilities • Setup and deploy new gaming projects • Maintain and update existing projects • Manage backend APIs and integrations • Handle server setup and optimization • Integrate and manage third-party APIs • Troubleshoot bugs and performance issues • Provide technical support when issues arise Additional Skills Required • Server management (Linux / Cloud servers) • API integration and debugging • Database optimization • Security and performance optimization Availability • Need reliable long-term support • Should be available to fix urgent issues when required Experience in online gaming platforms or bet...

...that the user remains logged into X automatically. Unfortunately, manual login to X is currently failing, even though the same approach works for other services. I suspect that X may be detecting and blocking the browser-based API or automation environment. The current Browserbase plan costs $20 per month, and the existing codebase is already fully implemented. Therefore, this is primarily a debugging and improvement task, rather than building a system from scratch. What I Need I am looking for someone who can carefully analyze the current implementation and help achieve the following: * Investigate why the login process for X is failing when using Browserbase * Modify or improve the implementation so that login works reliably * Ensure that session persistence works correctl...

...that the user remains logged into X automatically. Unfortunately, manual login to X is currently failing, even though the same approach works for other services. I suspect that X may be detecting and blocking the browser-based API or automation environment. The current Browserbase plan costs $20 per month, and the existing codebase is already fully implemented. Therefore, this is primarily a debugging and improvement task, rather than building a system from scratch. What I Need I am looking for someone who can carefully analyze the current implementation and help achieve the following: * Investigate why the login process for X is failing when using Browserbase * Modify or improve the implementation so that login works reliably * Ensure that session persistence works correctl...

My website has suddenly started throwing the message, “Error: Server Error – The service you requested is not available yet. Please try again in 30 seconds.” The outage appeared only recently and was not preceded by any obvious code or configuration changes on my side. I need someone to trace the root cause...problem—I expect a clear explanation of what happened and the corrective steps you took. Deliverables: • Diagnosis report outlining the exact failure point • Implementation of the fix and confirmation the site is loading for all users • Brief recommendations to prevent recurrence (server settings, monitoring, caching, etc.) Please be comfortable with typical LAMP/LEMP stacks, server logs, and debugging tools. Let me know your estimat...

I’m looking for an experienced embedded systems / hardware engineer to take over an existing ESP32-based NFC audio player project . ⚠️ Important clarification The physical PCBs are not currently available. I am looking for an embedded systems developer to review ...documentation explaining the code structure Constraints • Budget: 100 € fixed • No hardware prototype required • No PCB ordering or assembly • Communication and clear documentation required Skills Required • ESP32 development (Arduino or ESP-IDF) • NFC integration (RC522 or PN532) • microSD audio playback • Embedded C/C++ • Experience debugging embedded systems Required Skills ESP32 firmware (FreeRTOS or Arduino) NFC (RC522 / PN532) SD card audio playback ...

I have an existing Excel VBA workbook that is already developed and mostly working fine. However, sometimes it hangs or becomes slow when using buttons in the first sheet. I need a freelancer to review the existing VBA code, fix the issue, and improve the file’s performance and stability without changing the current working logic. This is mainly a small debugging and optimization task, not a full development project.

...platform was originally built using AWS Lambda (serverless architecture), but due to performance limitations, cold start latency, and stability issues, the application experienced delays in launch readiness. We are now migrating the backend architecture from AWS Lambda to AWS EC2-based services to ensure better performance, reliability, and scalability for production. The project also requires debugging and fixing issues in the existing React Native mobile application, along with improving backend stability and API performance in the NestJS backend. Key Responsibilities • Review the existing React Native mobile application and NestJS backend codebase • Identify and fix bugs, crashes, and performance issues in the React Native app • Debug and improve NestJS backend ...

...prototype testing and debugging if required Milestone Structure Total Project Budget: $1800 Estimated Development Timeline: approximately 8 weeks Milestone 1 – Architecture & Component Finalization Milestone 2 – PCB Design & Manufacturing Files Milestone 3 – Firmware Development & Testing For internal tracking, the development will be reviewed in stages such as architecture design, component selection, power supply design, sensor interface design, schematic development, PCB layout, firmware development, and final testing / manufacturing file preparation. Prototype Assembly and Testing After PCB fabrication and assembly, the physical prototype assembly and field testing will be performed on our side. If needed, we may request firmwar...

...prototype testing and debugging if required Milestone Structure Total Project Budget: $1800 Estimated Development Timeline: approximately 8 weeks Milestone 1 – Architecture & Component Finalization Milestone 2 – PCB Design & Manufacturing Files Milestone 3 – Firmware Development & Testing For internal tracking, the development will be reviewed in stages such as architecture design, component selection, power supply design, sensor interface design, schematic development, PCB layout, firmware development, and final testing / manufacturing file preparation. Prototype Assembly and Testing After PCB fabrication and assembly, the physical prototype assembly and field testing will be performed on our side. If needed, we may request firmwar...

Job Title: Senior Full-Stack App Developer for Debugging, UX Fixes, and Stability Improvements Job Description: I’m looking for an experienced full-stack developer to review and refine an existing mobile/web application that is already built and functional but needs polishing and technical corrections. The goal is to identify and resolve smaller issues that affect user experience, logic flow, and overall stability. This is not a project from scratch. The application is operational, but it requires a developer who can carefully audit the system, locate inconsistencies, and implement clean fixes. Responsibilities include: Reviewing existing frontend and backend logic Fixing UI/UX inconsistencies and interaction bugs Ensuring user actions trigger the correct outcomes across...

I’m looking for an experienced hand to take my existing Google Tag Manager container and quickly bring it up to speed. Within the next four weeks I need three things locked down: • Tag implementation – a clean, Basic tag setup that fires reliably across my site (pageview, scroll-depth, out...dashboards that surface traffic sources, conversions, and user journeys at a glance. • Data harvesting, storage, and reporting – advice or light configuration around routing the GA4 stream into BigQuery (or a comparable warehouse) so historical analysis is effortless. Everything must be configured through Google Tag Manager and tested so I can confidently roll it into production without extra debugging. If you’ve done similar projects and can deliver ...

...for: • Translating product requirements into clear technical architecture • Writing clean, well-documented code and setting up version control from day one • Integrating external APIs, databases, and any third-party services the product demands • Optimising performance, accessibility, and SEO fundamentals as you build • Thorough cross-browser and device testing, followed by systematic debugging • Implementing security best practices, monitoring, and patching We’ll collaborate closely—designers will supply UI assets and copywriters will handle content, while you stitch everything together and keep stakeholders informed of progress. I’m flexible on the exact tech stack; bring the tools you’re most productive with, but...