Backend Engineer

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

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

A prompt offer following the interview process