Job
- Level
- Senior
- Location
- Berlin
- Working Model
- Hybrid, Onsite
- Job Field
- Back End
- Employment Type
- Full Time
- Contract Type
- Permanent employment
Job Summary
In this role, you design scalable backend services in Kotlin/Java, create APIs for LLM integration, and enhance system stability and testing practices throughout the entire lifecycle.
Job Technologies
Your role in the team
- 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.
- Integrate 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.
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Our expectations of you
Qualifications
- 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
- 6+ Jahre Erfahrung im Backend-Engineering, davon mehr als 2 Jahre auf Senior-Level.
- Experience with regulated data environments (GDPR, BaFin, §203 StGB).
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What we offer
- 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.
- Geräumige Dachterrasse mit atemberaubendem Blick über Berlin.
- Vollständige Abdeckung eines deutschlandweiten Nahverkehrstickets.
- Dog-friendly office - we're happy to welcome four-legged team members.
- Corporate benefits platform with attractive offers and discounts across many brands.
- Betriebliche Altersvorsorge mit 20 % Arbeitgeberzuschuss – wir investieren in Ihre Zukunft.
- 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.
- 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.
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Benefits
Health, Fitness & Fun
Food & Drink
Topics You Will Work On
Job Locations
About Your Employer
Legalhero GmbH
Legal Hero GmbH, based in Berlin, is an advanced company that offers a digital platform for managing legal protection claims. The company focuses on the digitization of processes related to legal claims reporting and processing. Since its founding in 2017, Legal Hero has positioned itself as a significant startup in the legal tech sector.
Description
- Company Type
- Startup
- Working Model
- Hybrid, Onsite
- Industry
- Internet, IT, Telecommunication
Senior Backend Engineer
- Location
- Berlin
- Working Model
- Hybrid, Onsite
- Diversity
- Open for all genders
