You will get your PHP, Laravel, Go or Python bug found and fixed properly
Project details
Something broken in production? A feature that stopped working after an update? A query that suddenly takes 30 seconds? I find the root cause and fix it properly.
With 15+ years as a backend developer, including 11 years on a cloud billing platform acquired by Google, I have debugged everything from simple errors to race conditions and data corruption in live systems.
What I fix:
• PHP errors and exceptions: Laravel, Symfony, CodeIgniter, Yii
• Go services: panics, goroutine leaks, wrong results
• Python scripts and Django applications
• Slow MySQL queries, locking problems and deadlocks
• Broken REST API and third-party integrations
How it works: you describe the problem and share the code, I reproduce it and find the real cause, then you get the fix, a regression test where it makes sense, and a plain-language explanation of what was wrong.
Not sure what is broken? Message me with the symptoms and I will tell you honestly whether I can help.
With 15+ years as a backend developer, including 11 years on a cloud billing platform acquired by Google, I have debugged everything from simple errors to race conditions and data corruption in live systems.
What I fix:
• PHP errors and exceptions: Laravel, Symfony, CodeIgniter, Yii
• Go services: panics, goroutine leaks, wrong results
• Python scripts and Django applications
• Slow MySQL queries, locking problems and deadlocks
• Broken REST API and third-party integrations
How it works: you describe the problem and share the code, I reproduce it and find the real cause, then you get the fix, a regression test where it makes sense, and a plain-language explanation of what was wrong.
Not sure what is broken? Message me with the symptoms and I will tell you honestly whether I can help.
Programming Languages
PHP, Python, GoCoding Expertise
Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$50
|
Standard
$150
|
Advanced
$400
|
|---|---|---|---|
| Delivery Time | 2 days | 4 days | 7 days |
Number of Revisions | 1 | 2 | 3 |
Bug Investigation | |||
Fix Documentation | |||
Detailed Code Comments | - |
Frequently asked questions
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AH
Adrian H.
Aug 23, 2026
Laravel + React Developer — Bug Fixes & Small Features on Production Booking Platform
Andy was easy to work with. He understood fast what I needed to be implemented.
I provided all the resources that he needed and the implementation was exactly what I have required and on time.
Easy to talk to, he was available for explanation and clarification, I will surely work with him again in the future.
I provided all the resources that he needed and the implementation was exactly what I have required and on time.
Easy to talk to, he was available for explanation and clarification, I will surely work with him again in the future.
About Andrei
Senior Backend Engineer | Go, Python, PHP | APIs & AI Integration
Iasi, Romania - 7:09 am local time
I've been developing production software for 15+ years, including 11 years working on a multi-cloud marketplace and billing platform acquired by Google. The platform processes millions of dollars in monthly billing for tens of thousands of businesses and close to 100,000 users, backed by a 7 TB MySQL database and BigQuery reporting pipelines.
I own backend services there end to end: Go microservices using gRPC and REST, usage rating and invoicing pipelines for AWS, Azure and Google Cloud, database schema design, query optimization on high-volume billing tables, and the Angular/TypeScript applications on top.
What I can help you with:
Backend services, REST APIs and microservices in Go, Python/FastAPI or PHP
Debugging existing systems — from straightforward bugs to race conditions, performance issues and production data problems
MySQL schema design, indexing, query optimization and safe migrations
Third-party APIs, payments, billing and external service integrations
AI/LLM integrations, agents, tool calling, MCP and RAG systems
BigQuery pipelines, reporting and large-scale data processing
Full-stack work when needed using Angular and TypeScript
Dockerized applications and production deployments
I'm also a co-founder of FranceRent, a live tours and experiences marketplace in France handling around 100 bookings per month. I built its entire backend and full administration platform, including the admin frontend, and continue to maintain and operate it. This gives me experience not only building software, but also running a real online business where reliability, payments and operational workflows matter.
How I work: I clarify the problem before writing code, give realistic estimates, and deliver maintainable, tested work with clear documentation. I am comfortable taking ownership of an existing codebase as well as building new systems from scratch.
Send me a short description of what you're trying to build or fix. I'll tell you whether it's a good match for my experience and how I would approach it.
Steps for completing your project
After purchasing the project, send requirements so Andrei can start the project.
Delivery time starts when Andrei receives requirements from you.
Andrei works on your project following the steps below.
Revisions may occur after the delivery date.
Reproduce the bug
I set up your project locally and reproduce the problem. If I cannot reproduce it, I tell you straight away rather than guessing at a fix.
Find the root cause and fix it
I trace the actual cause rather than patching the symptom, apply the fix, and add a regression test where it makes sense so the bug cannot come back.