Senior Full Stack Engineer (Java, Reactjs)

Overview

Berlin-based software company building a Vietnam engineering team. We hire people who already ship with Claude Code not people who treat AI as a side tool.

Core work is Spring Boot + React. You will also own a live Grails app for a few months. Grails is JVM; strong Java is enough to stabilize it and hand it off. You own outcomes. You do not hide behind the model.

Description

• Ship production features end-to-end: APIs, data, integrations, React UI.
• Use Claude Code daily to write, refactor, test, and debug. Prompt with constraints and verification loops, not one-shots.
• Review, harden, or reject AI output. You are accountable for what ships.
• Take over the Grails app for a defined transition while the stack moves to Spring Boot + React.
• Hold the bar on architecture and maintainability. Work directly with Vietnam and Berlin.

Job Requirements

• 5+ years shipping production software.
• Daily Claude Code use on real product work not demos.
• Strong Java. Spring Boot in production preferred; Grails or another JVM web stack is acceptable if you can get productive fast.
• Production React.
• Judgment to rewrite or reject AI-generated code. You finish things.
• Fluent English

**Stack: Java / Spring Boot · React · REST · Grails for a few months · Claude Code · Git · CI/CD. Backend and frontend in the same week.

**High pace. Small team. Measured on what reaches production, not tokens burned. If you need a perfect spec or permission to use AI, skip this role.

** Offer:

• early seat in the Vietnam entity
• line to Berlin leadership
• 13th-month salary
• premium private health insurance
• 12 days leave + flexible Friday WFH