Senior Software Engineer API (f/m/d) - Node.js, SQL

About the role

Develop and maintain microservices that connect worlds (internal & external systems). Command side quests (and sometimes the main questline) when the Tech Lead is away from keyboard. Shape the team’s strategy with your strong opinions and battle-tested experience. Master the arts of authentication & authorization (OAuth, Auth0 integrations, specs reading = your spellbook). Design & optimize SQL databases like a level 99 architect (bonus points for PostgreSQL mastery).

Requirements

• 5+ years XP as Backend/API Developer in Node.js + TypeScript.
• Legendary SQL & DB design skills (PostgreSQL = epic weapon).
• ORM wisdom (knowing both the buffs and nerfs).
• Strong in automated testing (jest/mocha, coverage quests).
• Docker, Git, JavaScript, SQL – all mastered.

Nice-to-haves

• AWS, Grafana, Prometheus, Graylog.
• Academic background (Computer Science, Software Engineering).
• Leadership XP (professional, not disciplinary).

Why you’ll love working with us

• Ownership over tickets: You’re trusted with real responsibility, not just tasks. No unnecessary bureaucracy, no micromanagement – we rely on you to take things forward.
• Build > Talk: We test what works – not what sounds good. Fail fast, learn faster.
• High standards, low ego: We take our work seriously, but not ourselves. Direct feedback, honest collaboration, no drama.
• Stay sharp: Hackathons, conferences, community – we invest in your growth and keep you at the cutting edge.

Benefits

• 30 days of vacation + Dec 24 & 31 off.
• Smart Fridays (4 days week possible).
• Mobility (Germany ticket & JobRad).
• Sports & health offerings, mental health support.
• Corporate benefits, RTL+ access.

Your CV is just the starting point. What matters more to us than your resume: a portfolio, a side project, a demo repo – anything that shows you don’t just talk about code, you ship it. Production-ready. Thought through. Done.