For our client in the banking sector we are looking for a Lead/Expert Developer.

What you'll be doing: - Acting as a Lead/Expert Developer within the Financial Crime Prevention domain, driving technical excellence and innovation. - Leading technical teams by setting high development standards, implementing industry best practices, and mentoring other developers. - Collaborating closely with Product Owners, Solution Architects, and Analysts. - Refining epics and user stories, ensuring clear alignment between business goals and technical execution. - Translating solution architecture into robust technical designs and high-quality, working software. - Advising on the selection of tools, technologies, and processes to optimize development within the Fraud area. Required Skills: - Strong leadership & communication: Proven ability to facilitate technical meetings, lead and coach developers, and communicate effectively across diverse stakeholder groups. - An Senior/Expert mindset: Expert-level experience in building scalable, high-concurrency, and distributed systems with a focus on high availability and throughput. Your experience and background: - Core Tech Stack: At least 7 years of professional Java development, including deep hands-on experience with Spring Boot, Kafka, and SQL. - Architecture & Patterns: Practical expertise in Domain-Driven Design (DDD), Event Sourcing, Microservices architecture, and Clean Code principles. - Cloud & Modern Tooling: Hands-on experience with Cloud platforms (especially AWS) and a solid understanding of CI/CD (Jenkins, Docker, Kubernetes), REST, and Maven. - Practical knowledge of using AI tools and LLMs to enhance development workflows or integrate intelligent features into products. - Fluent in English and Finnish (both written and spoken). Preferred Skills: - Knowledge of Software Security, TDD, and JUnit. - Experience with HBase on Hadoop, Angular, or JavaScript.

Location: Helsinki, Finland (hybrid, 3 days on-site)

Allocation: 100%

Start date: 17.4.2026

End date: 30.6.2026

Language: Fluent in English and Finnish

Please note! We offer continuously. That means that we sometimes remove the assignments before deadline. If you are interested we recommend that you apply immediately.

PayExpress:

We now offer a fast and smooth payment solution, so you don't have to wait through long payment periods. With us, you will receive your payment within 3-5 days after your timesheet has been approved. This benefit is included as standard in almost all our contracts with no extra work on your part. Read more on below link.

https://knowledge.eworkgroup.com/payexpress-get-paid-within-days-not-months