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$
USD
I will fix your java spring boot bug, error or production issue
Ezzat Mohamed
About this gig
Your Spring Boot app is throwing an error and you need it working, not a lecture.
I'm a Java developer on banking and payment systems, where a bug is a financial event. Fixing Spring Boot problems is most of my week.
WHAT I FIX
- 500 errors and unhandled exceptions
- LazyInitializationException, N+1 queries, slow endpoints
- Spring Security problems: 401/403, CORS, JWT, filter chain
- Transaction, JPA and Hibernate issues
- Broken builds, failing tests, dependency conflicts
- Spring Boot 2 to 3 upgrade breakage
HOW IT WORKS
1. Message me the error and stack trace BEFORE ordering
2. I tell you honestly whether I can fix it, and which package fits
3. You order. I reproduce it, fix it, and send a test that proves it
4. You get a written explanation of what was actually wrong
YOU CAN CHECK MY WORK FIRST
github.com/ezat141/authcore - OAuth2 server, 65 tests
github.com/ezat141/spring-boot-api-starter - API template, 23 tests
For business and production applications. I don't take academic assignments or coursework.
Message me the error first. It's free and saves us both time.
Get to know Ezzat Mohamed
Ezzat Mohamed
Java Spring Boot Backend Developer
- FromEgypt
- Member sinceAug 2026
Languages
Arabic, English
I'm a Java backend developer. I build Spring Boot REST APIs and fix broken ones, and my specialty is API security: JWT, OAuth2, roles and permissions, multi-tenant systems.
Most of my work is on banking and payment systems, where a bug is a financial event rather than a ticket. So I reproduce a problem before I touch it, and I write a test that proves it is fixed.
You don't have to take my word for it. My code is public: github.com/ezat141/authcore is a full OAuth2 server with 65 tests that you can clone and run in two minutes.
I work with businesses. I don't take academic assignments.
Other Software Development Services I Offer
FAQ
Can you fix it if I can't share the whole repo?
Often yes. Send the relevant classes, the stack trace and your pom.xml. If I can't work with what you're able to share, I'll tell you before you order.
What if you can't fix it?
If I accept the order and can't solve it, you get a refund. That's exactly why I ask to see the error first — I decline anything I don't think I can deliver.
Do you do university assignments?
No. This gig is for business and production applications only.
How quickly do you reply, and how do we communicate?
Same day. I'm in Cairo (UTC+3), so my working hours cover the US morning and the European afternoon. You get detailed written updates as I go, and a short recorded walkthrough at delivery — no need to schedule a call.
