You will get expert JavaScript bug fixes for Angular, React, Vue, Node.js, NestJS
Top Rated
Project details
I provide expert JavaScript debugging and high-quality bug fixes for complex Angular, React, Vue, Node.js and NestJS applications.
If your web app is facing errors, broken functionality, console issues, API failures, routing problems, UI glitches or performance issues, I can quickly identify the root cause and fix it properly. I work on both frontend and backend issues, helping you restore stability, improve code quality, and get your application running smoothly again.
I can help with:
✔️JavaScript debugging and error fixing
✔️Angular, React, and Vue issues
✔️Node.js and NestJS backend bugs
✔️API integration problems
✔️Authentication and authorization issues
✔️UI, routing, and state management bugs
✔️Performance and loading issues
✔️Existing code cleanup and improvements
My focus is not just temporary fixes, but clean and reliable solutions that make your application stable, maintainable and production-ready.
If your web app is facing errors, broken functionality, console issues, API failures, routing problems, UI glitches or performance issues, I can quickly identify the root cause and fix it properly. I work on both frontend and backend issues, helping you restore stability, improve code quality, and get your application running smoothly again.
I can help with:
✔️JavaScript debugging and error fixing
✔️Angular, React, and Vue issues
✔️Node.js and NestJS backend bugs
✔️API integration problems
✔️Authentication and authorization issues
✔️UI, routing, and state management bugs
✔️Performance and loading issues
✔️Existing code cleanup and improvements
My focus is not just temporary fixes, but clean and reliable solutions that make your application stable, maintainable and production-ready.
Programming Languages
HTML & CSS, JavaScript, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$25
|
Standard
$75
|
Advanced
$200
|
|---|---|---|---|
| Delivery Time | 1 day | 2 days | 3 days |
Number of Revisions | 1 | 5 | Unlimited |
Bug Investigation | |||
Fix Documentation | - | - | |
Detailed Code Comments | - |
Frequently asked questions
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AB
Audrey B.
Sep 14, 2024
Django Developer (Must be a Python Guru)
It was a pleasure working with such a talented Django Developer. His Python expertise played a key role in delivering the project on time. He tackled every challenge with a positive, can-do attitude. I’m extremely satisfied with the results and would happily collaborate with him again.
AN
Ali N.
Mar 24, 2024
WordPress Core web vitals
Muhammad Asad delivered outstanding work on our project, exceeding expectations with his expertise and dedication. His professionalism and quick turnaround times were truly impressive. I highly recommend him for top-notch results!
JB
JAX B.
Jan 10, 2024
Angular Developer (Senior Level)
So refreshing to find someone who nails it without any back-and-forth. Great experience!
RS
Ricky S.
Dec 8, 2023
Senior Software Engineer Expert Needed
Despite the unexpected technical challenges, he handled them with impressive expertise. If possible, I'd rate him 10 out of 5 stars. He truly stood out as an exceptional contributor. His skill and reliability has assured me that he will be my go-to for future development tasks.
AB
Audrey B.
Oct 24, 2023
Looking for an Exceptional MERN Stack Developer
It's been a pleasure working with Asad, we couldn't have asked for a better developer. The process of integration and development was executed flawlessly and the features he rolled out are exceptional.
About Asad
Senior SaaS Developer | NestJS, Next.js, AI Agents & Microservices
100%
Job Success
Lahore, Pakistan - 6:36 am local time
I’m a Senior SaaS Developer with 10+ years of production experience, AWS certification and Top Rated Plus status (Top 3%). I build systems that stay fast, stable and maintainable as products grow in users, data and complexity.
What I’ve shipped at scale:
⇢ Unified NestJS microservices backend powering 5+ SaaS products for 12M+ users, with a 45% API latency reduction
⇢ CloudDrive handling 500K daily file operations with sub-100ms response under peak load using AWS S3, Lambda and BullMQ
⇢ Zero-downtime migration of 50M+ MongoDB records with batch processing and rollback-safe deployment strategy
⇢ RevBits PAM - Enterprise level privilege access management platform and Globee Gold Award winner
⇢ Built a multi-tenant AI layer with org-aware RAG chatbots and AI onboarding flows that turn company data, documents, and workflows into private knowledge bases for each tenant
What I build for clients:
✔ Multi-tenant SaaS platforms with RBAC, billing, and organization-level data isolation
✔ NestJS microservices and event-driven backends using BullMQ, RabbitMQ, and Kafka
✔ Next.js and React frontends connected to production-grade APIs
✔ AWS infrastructure with Lambda, S3, EC2, RDS, Docker, Kubernetes and CI/CD pipelines
✔ SaaS MVPs built to production standards, not prototype quality
✔ AI-powered workflows, including LLM middleware, RAG systems, document automation and chat features
Stack:
Backend: NestJS, Node.js, Express.js, Python
Frontend: Next.js, React, Angular, TypeScript, JavaScript
Databases: PostgreSQL, MySQL, MongoDB, Redis
Cloud: AWS, Docker, Kubernetes, CI/CD
AI: OpenAI API, LangChain, RAG, LLM middleware
Queues: BullMQ, RabbitMQ, Kafka
I work async-first, communicate clearly and focus on shipping systems that do not collapse when usage grows. If you are building a SaaS product, scaling an existing platform or adding AI features into a real business workflow, I can help with the architecture, execution, and long-term reliability.
Steps for completing your project
After purchasing the project, send requirements so Asad can start the project.
Delivery time starts when Asad receives requirements from you.
Asad works on your project following the steps below.
Revisions may occur after the delivery date.
Share Issue Details
Client provides error screenshots, code access and bug description.
Debug and Diagnose
I inspect the code, trace the root cause, and identify the exact issue.