Senior Java Developer

We are looking for support from a Senior Java Developer.

This is not a “ticket factory” role.

You'll step into a complex, business-critical banking environment where Java systems have grown over time and now need architectural leadership, technical clarity, and modernization
. Your work will directly influence security, stability, performance, and future scalability of systems that matter.

Project start: immediately

Project duration: 3 months with option for extension

Project location: Remote, with occasional on-site presence in Frankfurt

Language requirements:
English and German working proficiency.

• Own and evolve the technical architecture of distributed Java systems
• Define and enforce coding standards, best practices, and clean code principles
• Analyze existing codebases (incl. legacy portals) for quality, structure, maintainability, and risk
• Identify and remediate security vulnerabilities, performance bottlenecks, and architectural debt
• Drive modernization, migration, and refactoring initiatives
• Design and implement robust, testable, production‑grade code
• Strengthen CI/CD pipelines, test automation, and Dev Ops processes
• Lead code reviews, pair programming, and actively mentor junior developers
• Shape the technological roadmap in close collaboration with analysts and system owners
• Ensure compliance with banking‑grade quality, security, and documentation standards

• 5+ years of Java project experience, including long-term, complex engagements
• Language requirements:
  English and German working proficiency.
• Proven background in banking, financial services, or securities environments
• Strong experience with distributed systems, microservices, and modern Java architectures
• Expert knowledge of Java, Spring Boot, REST APIs, Postgre
  
  SQL, and related frameworks
• Deep understanding of software architecture, data modeling, and integration patterns
• Extensive experience with automated testing, test strategy, and quality assurance
• Hands‑on experience in migration projects and legacy system modernization
• Solid knowledge of CI/CD, Dev Ops principles, and cloud environments
• Strong focus on security‑by‑design (secure coding, auth, encryption, governance)
• Confident in code reviews, clean code practices, and architectural decision‑making
• Comfortable working with LLMs and modern development tooling
• Experience taking technical leadership roles in agile teams (Scrum exposure is a plus)

• Basic experience in project management.
• Experience as a Scrum Master for small to medium-sized projects.
• Good knowledge of job scheduling, ideally with AWA.
• Extensive experience with Large Language Models (LLMs).

This position offers the opportunity to work remotely with occasional on-site attendance in Frankfurt. The initial contract is for 3 months, with the potential for extension based on project needs. The role requires collaboration within a dynamic team focused on high‑impact IT projects.