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I will diagnose and fix bugs in your java spring boot backend api
Phabdev
About this gig
Is your Spring Boot backend throwing errors you cannot explain? 500 errors, slow endpoints, broken database queries, failing startup after an upgrade?
I am a senior Java developer with 10+ years on enterprise Spring Boot systems for banking, insurance and retail. I do not guess: I reproduce the problem, find the root cause and fix it properly.
How it works:
Step 1: you share the repository (or the relevant module) and the error logs.
Step 2: I reproduce the bug locally and find the root cause.
Step 3: you get a written diagnosis, and in the Standard and Premium packages the fix as a patch or pull request.
Step 4: in the Premium package I add JUnit regression tests, so the same bug does not come back.
Common issues I fix: REST API errors, JPA and Hibernate problems, transaction bugs, Spring Security configuration, performance bottlenecks, Spring Boot 2 to 3 upgrade errors.
Please message me before ordering with the error message and your Spring Boot version, so I can confirm I can help.
Get to know Phabdev
Phabdev
Shopify and WooCommerce integrations with ERP, invoicing and warehouse
- FromItaly
- Member sinceDec 2018
Languages
English, Italian
Senior full-stack developer (Java, Spring Boot, Angular, TypeScript) with 10+ years in enterprise projects for banking, insurance and retail. I help e-commerce businesses stop re-typing orders: I connect Shopify and WooCommerce to ERPs, invoicing tools and warehouses, fix broken integrations and automate back-office work. Every job starts with a read-only audit, so you know what is wrong and what it costs before paying for development. Clean, tested, documented code. I work in English and Italian.
Other Software Development Services I Offer
FAQ
What do you need from me to get started?
I’ll need a short description of the issue or goal, access to your project files (or repository), and clear steps to reproduce any bugs. If possible, please include details about your tech stack and environment (Spring Boot version, Angular version, database, etc.).
Do you work on both backend and frontend issues?
Yes — I handle backend logic, REST APIs, and frontend integration in Angular. However, I don’t work on UI/UX design or visual layout changes. My focus is on functionality, performance, and clean, maintainable code.
Can you review or extend an existing project?
Yes, I can review, refactor, or extend an existing Spring Boot or Angular project. I’ll analyze your code structure, suggest improvements, and implement requested features safely without breaking existing functionality.
Do you offer long-term support or maintenance?
Yes. If you need ongoing help with updates, new features, or troubleshooting, I can provide a custom offer based on your project’s needs.
