You will get backend bug fixes for your Node.js, Express or NestJS API
Project details
you will get Node.js Bug Fixing by Expert Backend Developer
Many startups and businesses face server crashes, API errors, slow performance, or unexpected bugs in Node.js applications. I help you fix these issues by providing clean, secure, and production-ready Node.js bug fixing for backend systems.
I identify the root cause, apply proper fixes, and ensure your backend works reliably with APIs, databases, and frontend integrations.
➥SERVICE DELIVERABLES:
➞Node.js error and bug fixing
➞Express.js API bug fixes
➞Fix server crashes and runtime errors
➞JavaScript and TypeScript issue resolution
➞Performance and stability improvements
➞Code cleanup and best-practice fixes
➥INDUSTRIES SERVED:
➞SaaS platforms
➞Software products
➞APIs and backend systems
➞Startup web applications
➞Modern Node.js services
➥WHY CHOOSE ME:
➞5+ years of backend development experience
➞Strong Node.js and Express.js debugging skills
➞Secure and scalable backend fixes
➞Clear communication and fast delivery
Send your server details, repo access, or error logs to get started, or message me to confirm scope and pricing.
Many startups and businesses face server crashes, API errors, slow performance, or unexpected bugs in Node.js applications. I help you fix these issues by providing clean, secure, and production-ready Node.js bug fixing for backend systems.
I identify the root cause, apply proper fixes, and ensure your backend works reliably with APIs, databases, and frontend integrations.
➥SERVICE DELIVERABLES:
➞Node.js error and bug fixing
➞Express.js API bug fixes
➞Fix server crashes and runtime errors
➞JavaScript and TypeScript issue resolution
➞Performance and stability improvements
➞Code cleanup and best-practice fixes
➥INDUSTRIES SERVED:
➞SaaS platforms
➞Software products
➞APIs and backend systems
➞Startup web applications
➞Modern Node.js services
➥WHY CHOOSE ME:
➞5+ years of backend development experience
➞Strong Node.js and Express.js debugging skills
➞Secure and scalable backend fixes
➞Clear communication and fast delivery
Send your server details, repo access, or error logs to get started, or message me to confirm scope and pricing.
Programming Languages
HTML & CSS, JavaScript, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, DesignWhat's included
| Service Tiers |
Starter
$100
|
Standard
$250
|
Advanced
$400
|
|---|---|---|---|
| Delivery Time | 7 days | 14 days | 21 days |
Number of Revisions | 1 | 3 | Unlimited |
Bug Investigation | |||
Fix Documentation | |||
Detailed Code Comments |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$50 - $120
Additional Revision
+$30Frequently asked questions
About Mahfuz
Full Stack Developer | React.js , Next.js , Node.js | MERN Stack
Dhaka, Bangladesh - 4:27 am local time
I work across the full stack: React.js and Next.js frontends, Node.js/Express.js APIs, PostgreSQL and MongoDB databases.
I convert Figma designs into pixel-perfect interfaces, build secure REST APIs, add authentication, integrate third-party services, and take ownership from first commit to live deployment.
I don't just finish tasks. I build software that works, is easy to maintain, and supports real business goals. If something isn't right after delivery, I fix it.
✅𝗪𝗛𝗔𝗧 𝗜 𝗖𝗔𝗡 𝗛𝗘𝗟𝗣 𝗬𝗢𝗨 𝗪𝗜𝗧𝗛
➤ Full Stack Web Application Development (React.js + Node.js + MongoDB/PostgreSQL)
➤ MERN Stack Development — end-to-end, production-ready
➤ SaaS Platform & Admin Dashboard Development
➤ Figma / Adobe XD → pixel-perfect React.js or Next.js
➤ REST API Development & Third-Party API Integration
➤ Authentication & Authorization (JWT, OAuth2, Role-Based Access Control)
➤ Database Design & Optimization (MongoDB, PostgreSQL, MySQL)
➤ Redux Toolkit State Management Architecture
➤ Tailwind CSS Responsive UI — mobile-first, clean, fast
➤ Bug Fixing, Performance Optimization & Feature Development
➤ Existing Project Maintenance & Deployment Support
✅𝗧𝗘𝗖𝗛 𝗦𝗧𝗔𝗖𝗞
➥Frontend: React.js · Next.js · TypeScript · JavaScript (ES6+) · Redux Toolkit · Tailwind CSS · React Hooks · HTML5 · CSS3
➥Backend: Node.js · Express.js · NestJS · REST API · JWT · OAuth2 · Role-Based Access Control
➥Database: MongoDB · PostgreSQL · MySQL · Mongoose · Prisma · SQL
➥Tools: Git · GitHub · Postman · Vercel · Netlify · Figma · VS CodeWeb Design | Figma to React.js
✅ EXPERIENCE HIGHLIGHTS
➤ 5+ years building full stack web apps, SaaS platforms, and admin dashboards
➤ Converted 10+ Figma/XD designs into responsive, production React.js applications
➤ Built secure REST APIs with JWT auth and role-based access for multi-user platforms
➤ Improved performance and maintainability of existing React.js, Next.js, and Node.js codebases
➤ Delivered projects for startups, agencies, and growing businesses across US and EU time zones
✅ WHY WORK WITH ME
✔ Full stack in one hire — frontend, backend, database, deployment
✔ Clean, typed, maintainable code — no shortcuts, no bloated packages
✔ Fast ramp-up on existing projects — contribute from day one
✔ Clear async communication — reliable updates, no surprises
✔ Post-delivery accountability — if something isn't right, I fix it
💬 𝗟𝗘𝗧’𝗦 𝗖𝗢𝗡𝗡𝗘𝗖𝗧!
Need help with a React.js, Next.js, Node.js, MERN stack, SaaS, dashboard, admin panel, REST API, or full-stack web application?
Send me a message with your project details.
Let’s build something reliable.
— Mahfuz Alam
Steps for completing your project
After purchasing the project, send requirements so Mahfuz can start the project.
Delivery time starts when Mahfuz receives requirements from you.
Mahfuz works on your project following the steps below.
Revisions may occur after the delivery date.
Review & Reproduce Issue
I review access details and reproduce the Node.js issue.
Root Cause Analysis
I trace the error in backend logic, APIs, or integrations.