You will get Senior Debugging Expert · Fixing Bugs in React, TypeScript & AI Apps
Project details
I help companies debug, fix, and stabilize their applications quickly and reliably.
With 25+ years of experience as a Senior Fullstack Engineer, I specialize in analyzing complex issues and delivering clean, tested, production-ready fixes.
I work across frontend, backend, APIs, and databases, with strong expertise in React, TypeScript, Next.js, Node.js, Express, GraphQL, Prisma, PostgreSQL, Docker, OpenAI, Java, and JEE. Whether it’s a small UI bug, a failing API, a broken Prisma schema, an unstable AI integration, or issues in Java/JEE-based enterprise systems — I’ll find the root cause and fix it.
My process:
Review code & environment
Reproduce & analyze the bug
Apply and test the fix
Deliver stable, well-documented changes
All packages include root-cause analysis, tested fixes, and a clear summary of what was changed. Fix documentation and detailed code comments are included in Standard and Premium packages, with optional add-ons for extra needs.
If your issue turns out more complex than expected, I’ll inform you upfront and provide a custom offer before proceeding. Let’s get your app running smoothly again! 🚀
With 25+ years of experience as a Senior Fullstack Engineer, I specialize in analyzing complex issues and delivering clean, tested, production-ready fixes.
I work across frontend, backend, APIs, and databases, with strong expertise in React, TypeScript, Next.js, Node.js, Express, GraphQL, Prisma, PostgreSQL, Docker, OpenAI, Java, and JEE. Whether it’s a small UI bug, a failing API, a broken Prisma schema, an unstable AI integration, or issues in Java/JEE-based enterprise systems — I’ll find the root cause and fix it.
My process:
Review code & environment
Reproduce & analyze the bug
Apply and test the fix
Deliver stable, well-documented changes
All packages include root-cause analysis, tested fixes, and a clear summary of what was changed. Fix documentation and detailed code comments are included in Standard and Premium packages, with optional add-ons for extra needs.
If your issue turns out more complex than expected, I’ll inform you upfront and provide a custom offer before proceeding. Let’s get your app running smoothly again! 🚀
Programming Languages
JavaScript, Java, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$300
|
Standard
$600
|
Advanced
$1,200
|
|---|---|---|---|
| Delivery Time | 2 days | 3 days | 5 days |
Number of Revisions | 1 | 2 | 3 |
Bug Investigation | |||
Fix Documentation | - | ||
Detailed Code Comments | - | - |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$100 - $400
Additional Revision
+$75
Fix Documentation
(+ 1 Day)
+$100
Detailed Code Comments
(+ 1 Day)
+$125
Custom Debugging Session
(+ 2 Days)
+$120Frequently asked questions
About Martin
Senior Fullstack Software Engineer React Next.js TypeScript Node.js AI
Munich, Germany - 9:18 am local time
I specialize in React, Next.js, TypeScript, Node.js, and microservice architectures, helping companies design and deliver robust, maintainable, and future-ready platforms.
I also have extensive experience in AI development and AI implementation, including integration of OpenAI, Azure AI Services, DeepSeek, vector search, and custom chatbots. Recent projects include developing an AI-powered intranet platform with semantic search, embeddings, and human-in-the-loop workflows.
Additionally, I have a background in Java (Spring Framework) and Scala/Akka, enabling me to support hybrid fullstack projects and enterprise integrations when needed.
If you're looking for a highly experienced engineer who can handle everything from pixel-perfect frontends to scalable backend architectures and AI-powered solutions, let’s connect.
Steps for completing your project
After purchasing the project, send requirements so Martin can start the project.
Delivery time starts when Martin receives requirements from you.
Martin works on your project following the steps below.
Revisions may occur after the delivery date.
Access & kickoff
Get repo access and env info, confirm scope, set up locally. If complexity exceeds the chosen package, I’ll propose a custom offer before continuing.
Reproduce & diagnose
Reproduce the bug, review logs/trace, isolate a minimal case, and outline the fix plan.