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

Legalhero

Berlin
Full-time
5-10 years experience
Hybrid

€60,000 - €100,000 per year

Work Arrangement

Office Days per Week: 3 days

Key Skills

Kotlin
Java
Micronaut
AWS
LLM
RAG
API design
Distributed systems
MySQL
Kubernetes
Automated testing
Observability
Cloud infrastructure
Data modeling
Incident management

Job Description

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

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.

Core Responsibilities

You will design and own scalable backend services, including APIs and data models, while integrating LLM-powered capabilities into product flows. Additionally, you will harden production systems, lead incident investigations, and drive architectural improvements through automated testing.

Requirements

Candidates must have at least 6 years of backend engineering experience, with strong proficiency in Kotlin or Java and experience with relational databases and public cloud environments. You should also possess a deep understanding of distributed systems and be comfortable working in a hybrid office environment in Berlin.

Benefits

  • Public transport ticket
  • Dog-friendly office
  • Corporate benefits platform
  • Company pension scheme
  • Company events
  • Free drinks
  • Fresh fruit
  • Muesli

About Legalhero

Industry: Legal Services

Company size: 51-200 employees

Unsere Mission bei Legalhero ist es, Rechtsschutz ins digitale Zeitalter zu bringen. Weg von Papierkram und Bürokratie, hin zu schnellen, effizienten und digitalen Lösungen. Wir wollen die Art und Weise, die Rechtsberatung funktioniert, verändern. 🤖 Als junges Tech-Unternehmen aus Berlin haben wir eine eigene Software entwickelt, die Rechtsschutzprozesse beschleunigt, digitalisiert und automatisiert. ⚖️ Unsere spezialisierten Partneranwält:innen sorgen dafür, dass Ratsuchende zu ihrem Recht kommen. Einfach, digital und effizient. 🖥️ Unsere Kanzleisoftware bietet ein umfangreiches Toolset, das Anwält:innen bei der Fallbearbeitung, Terminverwaltung und Dokumentation unterstützt. Mit künstlicher Intelligenz und Machine Learning setzen wir Maßstäbe für die Effizienz und Qualität in der Rechtsberatung. 🎯 Unsere Lösungen sind speziell für Anwält:innen und Rechtsschutzversicherungen entwickelt. Wir sehen uns nicht als Rechtsdienstleister, sondern unterstützen Anwält:innen und Rechtsschutzversicherungen dabei, ihren Mandanten den besten Rechtsservice zu bieten. 🏆 Mit einem Team von ca. 65 engagierten Mitarbeiter:innen und 150 erfahrenen Partneranwält:innen haben wir zu eine der führenden Legal Tech-Plattformen entwickelt. Unsere Vision ist es, dass niemand in Deutschland sein Recht aufgeben muss, weil der Prozess zu kompliziert oder zeitaufwendig ist. 👩‍💻 Du willst ein Legalhero werden? Wir suchen stets nach talentierten Menschen aus den Bereichen Recht, IT und Kundenservice, die unsere Mission teilen. Werde Teil unseres Teams und lass uns gemeinsam die Rechtsbranche revolutionieren!

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