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

About this role

Remote in our day-to-day work. On-site when it matters.
We work remote by default – focused, efficient, and with full ownership. For larger features, architectural decisions, and real brainstorming sessions, we come together in Berlin – fast, hands-on, and without unnecessary meeting overhead.

We use AI to accelerate – not to replace thinking.
We design the system, steer the output, and take responsibility for what we ship.
Fast where it makes sense. Careful where it matters.

Your mission

• **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).

Your skills

Must-haves:

• 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, ...