Lead Backend Developer

emagine is looking for a Senior Lead Backend Developer for one of our clients within the banking industry. This roles is based in Finland.Start: 2026-04-17End: 2026-06-30 (extension possible)Location: Helsinki, 3 days/week at the office is requiredWhat 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.Your profile and experience:
• 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.
• 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)Nice to have:Knowledge of Software Security, TDD, and JUnit.Experience with HBase on Hadoop, Angular, or JavaScript.