Senior IT Developer- Java

Our client within the banking sector is seeking an experienced Senior Java Developer to support the modernization and migration of critical pricing and settlement systems. The consultant will play a key role in transforming legacy application logic into scalable, maintainable solutions while ensuring the accuracy and integrity of financial processing. The assignment involves close collaboration with business stakeholders, product owners, QA teams, and infrastructure specialists to deliver compliant and robust solutions within a complex financial environment.

Location: Helsinki, Finland Work Model: Hybrid, minimum 3 days per week onsite Start Date: 16 November 2026 End Date: 15 February 2027 (extension possible) About the assignment Design, develop, and maintain components of the pricing engine, with a strong focus on migrating legacy functionality to modern platforms. Design and implement cash flow generation and cash instruction logic. Analyze legacy applications and processes to identify migration strategies and refactoring opportunities.

Utilize AI-assisted development tools, including coding assistants and LLM-based analysis tools, to accelerate development, migration, testing, and documentation. Collaborate with business, product, QA, and infrastructure teams to ensure pricing, settlement, and booking logic is implemented accurately and compliantly. Produce clear and maintainable technical documentation.

Support testing, validation, deployment, and rollout activities wit