This is usAt 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 jobWe 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 collaborationThis is you7+ years of professional experience in backend software engineeringDeep knowledge of Java and Spring BootSolid understanding and hands-on application of design patternsPractical experience with testing practices – unit and integrationProficiency with tools such as JUnit, Mockito, and TestContainersStrong experience with AWS, Kubernetes, and event-driven architectures (e.g., Kafka, ActiveMQ)Familiarity with both SQL and NoSQL databasesExcellent communication skills – able to clearly articulate challenges and technical decisionsStrong team player, collaborative mindset, and proactive attitudeCritical thinking and problem-solving skills; ability to investigate and resolve production issuesHighly responsible when working on sensitive, payment-related functionalityNice-to-have skills:Experience with reactive programming (e.g., Project Reactor, WebFlux)Hands-on knowledge of MongoDB or other NoSQL technologiesDeeper experience with event-driven systems and message brokersThis is your roleDesign and build robust backend components using Java and Spring BootConduct structured, constructive code reviews with a focus on quality and system impactCollaborate with team members to establish and uphold development standardsTake end-to-end ownership of feature delivery and system designActively manage and reduce technical debt within your teamKeep documentation up to date and accessibleParticipate in hiring by leading technical interviews and reviewing coding challengesFoster a culture of quality, security, and improvementWhat 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.