(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 includedBuild and evolve high-performance, secure infrastructure that handles real load — not just greenfield, but messy realityWire LLM-powered capabilities reliably into product flows: suggestion APIs, RAG-backed endpoints, agent tool calls — you make AI actually land in productionWork closely with frontend, product, and AI teams — your APIs are their foundation, so you design them to lastMake the hard tradeoffs: schema migrations, breaking changes, dependency upgrades — with judgment, not just best practicesRaise the quality bar through automated testing (unit, integration, end-to-end) and push for architectural improvements that matterLead 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 levelStrong proficiency in Kotlin or Java — JVM idioms feel like homeRelational databases (MySQL or similar) and at least one public cloud in production, AWS preferredDistributed systems thinking as a reflex: idempotency, retries, eventual consistency, observabilityBusiness 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 architectureExperience 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 workModern, air-conditioned office with plenty of natural daylightCentral location between Gleisdreieck and Potsdamer Platz with excellent public transport accessSpacious rooftop terrace with stunning views over Berlin Benefits Full coverage of a Germany-wide public transport ticketDog-friendly office – we’re happy to welcome four-legged team membersCorporate benefits platform with attractive offers and discounts across many brandsCompany pension scheme with a 20% employer contribution – we invest in your futureRegular company and team events to strengthen collaboration and team spiritAfter-work fun: Nintendo Switch, PS5, darts, and table footballFree drinks, fresh fruit, and muesli available at all times Company Culture & Collaboration Agile and modern mindset with open communication – every voice is heardMeaningful areas of responsibility with a strong focus on practical, real-world legal solutionsThe opportunity to actively shape our journey and contribute from day oneFeedback is part of our culture – we believe in continuous, shared growth Fast Application Process Fast feedback1. Approx. 20-minute introductory call with our HR team2. Approx. 60-minute on-site interview with your hiring manager3. Approx. 30-minute meeting with the management teamA prompt offer following the interview process About Us Legalhero is the modern platform for legal protection insurance and lawyers. We pursue the ambitious goal of revolutionizing the claims settlement process for legal protection insurance. To this end, we integrate directly into the insurers' systems. Our partner lawyers handle cases highly efficiently and in a customer-oriented manner on our tech platform with the help of AI. Legalhero was founded in 2017 and has helped hundreds of thousands of policyholders to date. Our approximately 90 colleagues are based in Berlin, near the Gleisdreieck. An inclusive, equal, and non-discriminatory work environment is a matter of course for us. If you have a disability or special needs and require special support during the application process, please let us know.