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Java Developer (w/m/d)

Altstadt-Nord, Köln💼 Full-time🗓 2026-05-12 → 2026-08-07

Core

Developing high-performance backend applications and digitalizing the leasing process for sales partners.

Role type

Senior Java Backend Engineer

Builds

Lease Seven, a web-based leasing application for sales partners

Domain

Fintech / Leasing

Deliverable

production ML models | product features

Required skills

Java 21+, Spring Boot, REST APIs, Microservices, Cloud-native architectures, Databases, ORM frameworks (Hibernate), CI/CD, Docker, Git, Agile methodologies

Preferred skills

Kubernetes, Infrastructure as Code, AI tools

Technologies

Java, Spring Boot, Hibernate, Docker, Kubernetes, JIRA

Responsibilities

Develop performant backend applications, Build and maintain RESTful APIs, Integrate with external systems (payment providers, ID verification, ERP), Optimize application performance and scalability, Participate in code reviews and architectural decisions

Seniority

Senior, hands-on IC

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