Work Across
Get started
All jobs
Save

Senior Backend Developer (Java/Spring Boot, Agentic LLMs) - Full Remote Europe

HumanIT Digital Consulting
Contract type
Ongoing
Work mode
Remote · Europe
Experience
Senior · 6+ years

Job description

Hands-on Java backend engineering role on a large platform used worldwide in business aviation, building features end-to-end in a distributed, event-driven environment with pragmatic AI adoption.

At a glance

Work mode
Remote · Europe
Languages
English – B2 minimum; C1 preferred

What you'll do

  • Develop and improve a large Java backend powering web applications, mobile experiences and integrations with external systems
  • Implement reliable features end-to-end, working closely with product and engineering colleagues
  • Apply knowledge of agentic LLM workflows in practical Java development, including integrations, retrieval and automation where relevant

What we're looking for

  • 6+ years of hands-on Java backend engineering, ideally Java 17, with Spring Boot (2.x/3.x) and Hibernate (5.x/6.x)
  • Experience building and maintaining scalable distributed systems, REST APIs and relational data models with PostgreSQL
  • Practical event-driven development with Apache Kafka or comparable messaging/streaming technologies
  • Strong familiarity with functional programming principles, including immutability, pure functions and concurrency-aware design
  • Hands-on familiarity with LLMs and agentic workflows, including RAG pipelines, agent/tool interactions and LLM orchestration; ability to discuss concrete implementations
  • Regular use of AI-assisted coding tools such as Cursor, Claude Code or GitHub Copilot, with sound judgment about code quality and testing
  • Git, Maven, testing, debugging and end-to-end delivery ownership
  • Strong collaboration skills and fluent professional English (B2 minimum; C1 preferred)

Nice to have

  • Experience with Model Context Protocol (MCP), autonomous agents or multi-agent workflows
  • Scala, Kotlin or functional Java libraries such as Vavr
  • Elasticsearch, vector search/embeddings, Redis and performance optimisation
  • Docker, Kubernetes, AWS, Terraform and CI/CD
  • Experience integrating LLM-powered features into existing backend services

Apply

Save

About HumanIT Digital Consulting

Key facts

  • International technology company building a sophisticated, high-performance platform used worldwide in business aviation