(Senior) Backend Engineer (m/w/d)

What You'll Do

Backend engineering at Legal Hero means full ownership. You'll design and run services in our Kotlin/Java stack with Micronaut on AWS, wire LLM capabilities reliably into product flows, harden production systems, and actively shape our testing, deployment, and observability practice — together with a team that takes the craft seriously.

Design and own scalable backend services from first commit to production — APIs, data models, versioning, SLOs, and on-call included

Build and evolve high-performance, secure infrastructure that handles real load — not just greenfield, but messy reality

Wire LLM-powered capabilities reliably into product flows: suggestion APIs, RAG-backed endpoints, agent tool calls — you make AI actually land in production

Work closely with frontend, product, and AI teams — your APIs are their foundation, so you design them to last

Make the hard tradeoffs: schema migrations, breaking changes, dependency upgrades — with judgment, not just best practices

Raise the quality bar through automated testing (unit, integration, end-to-end) and push for architectural improvements that matter

Lead incident investigations on your own services, write the postmortem, and escalate only once you have answers

What you bring

6+ years in backend engineering, including 2+ years at senior level

Strong proficiency in Kotlin or Java — JVM idioms feel like home

Relational databases (MySQL or similar) and at least one public cloud in production, AWS preferred

Distributed systems thinking as a reflex: idempotency, retries, eventual consistency, observability

Business fluent English; German at B1 or a clear commitment to get there within 12 months

Nice to have — and what you'll pick up here

• Micronaut, Kubernetes, AWS Bedrock, LiteLLM, the official Claude Agent SDK, MCP-based architecture
• Experience with regulated data environments (GDPR, BaFin, §203 StGB)
• What we promise

Work Environment & Flexibility

• Office-first company: Hybrid setup with 3 days in the office and 2 days working from home, offering flexibility in how you structure your work
• Modern, air-conditioned office with plenty of natural daylight
• Central location between Gleisdreieck and Potsdamer Platz with excellent public transport access
• Spacious rooftop terrace with stunning views over Berlin

Benefits

• Full coverage of a Germany-wide public transport ticket
• Dog-friendly office – we’re happy to welcome four-legged team members
• Corporate benefits platform with attractive offers and discounts across many brands
• Company pension scheme with a 20% employer contribution – we invest in your future
• Regular company and team events to strengthen collaboration and team spirit
• After-work fun: Nintendo Switch, PS5, darts, and table football
• Free drinks, fresh fruit, and muesli available at all times

Company Culture & Collaboration

• Agile and modern mindset with open communication – every voice is heard
• Meaningful areas of responsibility with a strong focus on practical, real-world legal solutions
• The opportunity to actively shape our journey and contribute from day one
• Feedback is part of our culture – we believe in continuous, shared growth

Fast Application Process

Fast feedback

1. Approx. 20-minute introductory call with our HR team
2. Approx. 60-minute on-site interview with your hiring manager
3. Approx. 30-minute meeting with the management team

A prompt offer following the interview process