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I will fix java spring boot or node js API bugs errors and failed builds
Hyun Cho
Über diesen Service
Your Spring Boot or Node.js service throws an error, a build fails, or an endpoint returns the wrong data - and you need it fixed today, not next week.
I have fixed these for 20 years in Java/Spring Boot, Node.js/Express, PHP and React apps, from startups to a large CRM migration.
What you get:
- Root cause written in plain words (not just "fixed")
- - The fix as a pull request or patch, plus how to verify it
- - A short screen recording of the working result
Typical fixes: 500/400 errors, NullPointer/undefined, JPA/MyBatis query bugs, JWT/CORS/auth issues, Maven/Gradle/npm build failures, Docker/Nginx config, slow queries.
How it works: send repo access (or the code), the error text and how to reproduce. I diagnose first, then send you the likely cause, the scope and the right package; once you confirm, I start. Written updates every day.
Not included: new features, mobile-native code, ML/AI models.
Remote, async, UTC+9 - your overnight issue is fixed during my day.
Lerne Hyun Cho kennen
Hyun Cho
Full stack rescue developer for Java Spring Boot Node PHP React and Linux
- AusSüdkorea
- Mitglied seitFeb. 2021
Sprachen
Koreanisch, Englisch
20 years building and running web backends: Java/Spring Boot, Node.js (Express), PHP (CodeIgniter), React/Vue, MySQL/PostgreSQL/MS-SQL, Linux + Nginx + GitLab CI.
I fix what is broken and ship what is half-done: API bugs, Nginx 502/504, failed deploys, slow queries, legacy-to-Spring Boot migrations, e-commerce/CRM integrations.
How I work: written brief first, fixed scope, daily written update, a short screen recording when I deliver. Remote and async (UTC+9 - your night is my working day).
No AI/ML claims, no mobile-native. If your problem is not in my list, I say so on day one.
Meine weiteren Dienstleistungen im Bereich Software-Entwicklung
FAQ
Do you need access to my repository?
Yes, or a zip of the code plus how to run it. Read-only access is enough for diagnosis; I send the fix as a patch or pull request.
What if it turns out to be more than one bug?
I tell you after about one hour of diagnosis and propose the Standard or Premium package. No surprise charges - nothing extra is billed without your OK.
Do you do calls?
Written chat and screen recordings by default - it is faster and leaves a record. A short call is possible for the Premium package. I work in Korean and English (written).
Which stacks and databases do you cover?
Java/Spring Boot (JPA, MyBatis), Node.js/Express, PHP (CodeIgniter, Laravel basics), React/Vue front ends, MySQL/MariaDB/PostgreSQL/MS-SQL/Oracle, Redis, MongoDB, Linux/Nginx/Docker. Not mobile-native, not ML/AI.
