Upwork home
Sign up
Project Catalog
DesignDesign
Video & AudioVideo & Audio
Development & ITDevelopment & IT
MarketingMarketing
Writing & TranslationWriting & Translation
MoreMore

You will get Bug fixing in React | Node | Vue | Angular | Next | web app

Abdul H.Status: Offline
Abdul H. Abdul H.
Preview image

Let a pro handle the details

Buy Web Programming Bug Fixes services from Abdul, priced and ready to go.
Abdul H.Status: Offline
Abdul H. Abdul H.
Preview image

Let a pro handle the details

Buy Web Programming Bug Fixes services from Abdul, priced and ready to go.

Project details

I specialize in fixing bugs and resolving errors in modern web and mobile applications using React, Node.js, Vue, and React Native. Whether your app is crashing, APIs are failing, or something just isn’t working right — I can quickly diagnose and fix the issue.

I focus on writing clean, maintainable code while ensuring your application remains stable and optimized after the fix. My goal is not just to patch bugs, but to provide long-term solutions.

✔ Fast debugging & troubleshooting
✔ Clean and efficient fixes
✔ Clear communication & updates
✔ Reliable and professional service

Let’s get your application running perfectly again 🚀
Programming Languages
HTML & CSS, JavaScript, TypeScript
Coding Expertise
Cross Browser & Device Compatibility, Performance Optimization, Security
What's included
Service Tiers Starter
$20
Standard
$55
Advanced
$150
Delivery Time 2 days 7 days 14 days
Number of Revisions
123
Bug Investigation
-
-
Fix Documentation
-
Detailed Code Comments
Optional add-ons You can add these on the next page.
Fast Delivery
+$25 - $200
Additional Revision
+$20
Abdul H.Status: Offline

About Abdul

Abdul H.Status: Offline
AI/LLM Engineer | RAG, AI Agents, MCP Servers | Full-Stack Architect
Karachi, Pakistan - 7:33 pm local time
I build production AI/LLM systems — RAG pipelines, multi-agent workflows, and MCP integrations that ship reliably and keep token costs predictable. 11+ years of full-stack architecture underneath means the AI runs on infrastructure that scales, not on a demo notebook.

Recent work:
• Stateful multi-agent workflows in LangGraph with MCP-based tool integration and hybrid RAG (pgvector + reranking) — production teams query historical manufacturing data in plain English
• LLM evals, tracing, and prompt caching with LangFuse that cut token spend while holding answer quality
• AI-powered anomaly detection and automated reporting on live production-monitoring systems (Python, FastAPI, GPT-4, Llama)

I'm strong on the parts demos skip: evals and observability (LangSmith/LangFuse), fallbacks, rate limiting, and FinOps cost monitoring — so what we launch keeps working at real traffic.

Stack: Python (FastAPI), TypeScript/Node.js (NestJS), React/Next.js, LangChain, LlamaIndex, LangGraph, pgvector, Pinecone, PostgreSQL, Kubernetes, Terraform, AWS/Azure/DigitalOcean.

How I work: clear scope before code, funded milestones, updates twice a week, and honest calls on what an LLM can and can't do for your use case.

Adding AI to an existing product, building an AI-first SaaS, or need agents that plug into your tools via MCP? Message me with what you're trying to build — I'll reply with an honest take and a plan.

Steps for completing your project

After purchasing the project, send requirements so Abdul can start the project.

Delivery time starts when Abdul receives requirements from you.

Abdul works on your project following the steps below.

Revisions may occur after the delivery date.

Requirement Analysis

I will review your issue, code, and provided details to understand the root cause.

Debugging & Issue Identification

I will investigate the bug, check logs, and identify the exact problem in your application.

Review the work, release payment, and leave feedback to Abdul.