Senior Software Engineer (Java)

Job Description

Are you interested in joining of Europes fastest growing companies Do you want to impact the wellbeing of millions of users
If yes join us to make an impact in a fast-paced and dynamic environment where youll play a key role in driving financial accountability supporting strategic decisions and enabling sustainable growth.

Epassis purpose is to boost everyday well-being. We are a leading provider of employee benefit solutions across Europe. We were established in Finland in 2007 and in 2008 we were the first company to launch a mobile-payable employee benefit payment solution in Europe. Since then we have consistently grown diversifying our products and introducing our services into new markets.
Epassi has been awarded by the Financial Times as one of the fastest-growing companies in Europe on multiple occasions.

We are currently hiring a Senior Software Engineer (Java) to be based in either Finland UK Germany Poland Sweden Netherlands or Spain. The preferred location is Finland or Germany

Your mission at Epassi

You will be part of a cross-functional product team responsible for building and evolving a modern platform that supports Epassis product vision. We are adding this role to strengthen our backend engineering capabilities and establish a solid scalable foundation for Java Spring Boot services built for long-term growth.
In this role you will take ownership of one domain contribute to critical architectural decisions and help shape how we build operate and continuously improve our service landscape across the Epassi group.

Your responsibilities will be:

Design build and maintain high-quality Java Spring Boot microservices as part of our domain bounded context architecture
Implement event-driven architecture for cross-domain communication and eventual consistency patterns
Work with PostgreSQL as primary data storage including schema design with multi-tenancy support and data isolation
Implement RESTful APIs with proper versioning rate limiting and API gateway integration
Ensure high standards for code quality comprehensive testing (unit integration contract) performance optimization and security best practices
Collaborate closely with Product Web Mobile (React Native) DevOps and other backend teams across multiple European markets
Participate in architectural discussions and technical design reviews and contribute to platform-wide standards and best practices

Youll be successful in this role if you:

Deliver production-ready scalable microservices that meet target architecture specifications
Implement clear domain boundaries that avoid cross-domain coupling while enabling integration through well-defined APIs and events
Maintain code quality with >80% test coverage and contribute to architectural decision records (ADRs) that shape the platforms future
Take ownership of the reliability and operability of backend services
Proactively identify and reduce technical debt
Communicate clearly and work effectively in a cross-functional team
Support reliable delivery and smooth operations with a you build it you run it mindset
Leverage AI-native development tools and workflows (e.g. Copilot Cursor Claude) to accelerate delivery improve code quality and set the standard for AI-assisted engineering practices across the team.

What you should bring:

6-8 years of professional software development experience including 3 years focused on Java backend development
Strong expertise in Java (17) and Spring Boot including Spring Data JPA Spring Security and Spring Cloud
Hands-on experience with microservices architecture (service decomposition API design inter-service communication patterns)
Solid understanding of Domain-Driven Design (DDD): bounded contexts aggregates domain events anti-corruption layers
Strong knowledge of relational databases (PostgreSQL preferred) including schema design indexing query optimization and transaction management
Experience with event-driven architectures using message brokers (Kafka RabbitMQ AWS SNS/SQS)
Proficiency in RESTful API design including versioning documentation (OpenAPI/Swagger) and rate limiting
Strong testing mindset (JUnit Mockito) plus integration and contract testing (Pact)
Familiarity with Docker and Kubernetes including deployment strategies and service mesh concepts
Experience with CI/CD pipelines (Jenkins GitLab CI GitHub Actions)
Understanding of observability: structured logging distributed tracing (Jaeger/Zipkin) and metrics (Prometheus/Grafana/Datadog)
Bachelors degree in Computer Science Software Engineering or equivalent practical experience

Why You Should Join Us

Be part of an ambitious growth journey and join a global community of driven bold entrepreneurial yet humble Epassians in a company that is constantly evolving.
Work with a clear purpose boosting everyday wellbeing and create a meaningful positive impact on both individuals and society.
Thrive in an open and inclusive culture with low hierarchy where relationships are built on respect camaraderie and shared successes and challenges.
Come as you are well bring out the best in you and support your personal and professional growth.
Join a fast-growing tech company with a strong financial foundation offering opportunities to grow and make an impact together with us.
Benefit from an inspiring and supportive work environment where employee wellbeing is a true priority.
Contribute to solidifying our position as the number one player in Europes employee benefit market and help shape the next wave of success.

About the company

Founded in Helsinki in 2007 Epassi is a pioneer in digital employee benefits and payments and the leading global multi-benefits platform with a strong presence in the Nordics Germany the Netherlands Italy the UK Ireland Spain Portugal and France. Epassis innovative unique and scalable solution combines all benefits into one mobile app-centric user-friendly digital service providing a digital marketplace for employee benefits.

Epassi Group serves more than 50000 employers and their over 30 million employees with a partner network of more than 100000 service providers. Epassi is a leading fintech company recognized by the Financial Times as one of the fastest growing companies in Europe inand 2025 and ranked 32nd on Europes Long-Term Growth Champions 2025 list.
Epassi Boosting everyday wellbeing.