Senior Java Engineer

This is us

At Avenga, we believe that human creativity empowers technology that matters. Operating globally, our 6000+ specialists provide a full spectrum of services, including business and tech advisory, enterprise solutions, CX, UX and Ul design, managed services, product development, and software development.

This is the job
We are looking for a Senior Java Engineer to join a long-term project in the banking domain, working on high-value, business-critical payment functionalities. You will contribute to the design, implementation, and delivery of robust and scalable backend services using modern Java and Spring Boot, while also promoting clean architecture, testing best practices, and team collaboration

This is you

• 7+ years of professional experience in backend software engineering

• Deep knowledge of Java and Spring Boot

• Solid understanding and hands-on application of design patterns

• Practical experience with testing practices – unit and integration

• Proficiency with tools such as JUnit, Mockito, and TestContainers

• Strong experience with AWS, Kubernetes, and event-driven architectures (e.g., Kafka, ActiveMQ)

• Familiarity with both SQL and NoSQL databases

• Excellent communication skills – able to clearly articulate challenges and technical decisions

• Strong team player, collaborative mindset, and proactive attitude

• Critical thinking and problem-solving skills; ability to investigate and resolve production issues

• Highly responsible when working on sensitive, payment-related functionality

Nice-to-have skills:

• Experience with reactive programming (e.g., Project Reactor, WebFlux)

• Hands-on knowledge of MongoDB or other NoSQL technologies

• Deeper experience with event-driven systems and message brokers

This is your role

• Design and build robust backend components using Java and Spring Boot

• Conduct structured, constructive code reviews with a focus on quality and system impact

• Collaborate with team members to establish and uphold development standards

• Take end-to-end ownership of feature delivery and system design

• Actively manage and reduce technical debt within your team

• Keep documentation up to date and accessible

• Participate in hiring by leading technical interviews and reviewing coding challenges

• Foster a culture of quality, security, and improvement

What awaits you at Avenga?

Through our values – Better Minds, Bolder Ideas, and Bigger Hearts – we strive to provide you with the tools, autonomy, trust, and assistance you need to excel. Enjoy benefits like private health insurance, well-being programs, flexible and hybrid work models, laptops and gear, training opportunities, language classes, social events, and more.

At Avenga, everyone matters. We provide equal opportunities in recruitment, career development, and leadership, regardless of race, ethnicity, gender identity, sexual orientation, disability, age, religion, or any other characteristic. We are committed to fostering a work environment where our diverse community of employees, candidates, and business partners actively shapes our growth. By bringing together people from different backgrounds and experiences, we build a workplace where everyone feels free to be themselves while honoring the boundaries of others.