Back-End Engineer - Java (Payments)

Job description

**CAPCO POLAND** **\*We are looking for Poland based candidate.** At **Capco Poland,** we’re not just another consultancy - we’re the spark behind digital transformation in the financial world. As a global leader in technology and management consulting, we thrive on helping clients tackle the toughest challenges across banking, payments, capital markets, wealth, and asset management. **Build scalable, secure back-end solutions and help shape the future of payment technology.** **The Role** At Capco, we're looking for an experienced **Back-End Developer t**o provide specialist development services for a project within the financial services and payments industry. You'll collaborate with the Team, contributing to the design, development, and enhancement of modern back-end applications and services supporting business-critical payment solutions. This engagement offers the opportunity to apply your Java and Spring Boot expertise, work with PostgreSQL and AWS cloud technologies, and deliver reliable, scalable, and high-performance solutions within a collaborative engineering environment. **What You’ll Do** - Design, develop, and deliver scalable, secure, and high-quality back-end services using Java 25 and Spring Boot 4. - Collaborate with the Agile Team, including developers, product owners, QA engineers, and other stakeholders, to coordinate technical activities and deliver agreed project outcomes. - Develop and maintain RESTful APIs, microservices, and integrations with PostgreSQL databases and AWS cloud services. - Deliver clean, maintainable, and testable code, contributing to technical reviews and applying established engineering standards. - Analyse and resolve technical challenges, optimise application and database performance, and contribute to improvements in system reliability, security, and scalability. **What We’re Looking For** - Around 5–10 years of hands-on expertise in Java and Spring Boot, including knowledge of **Java 25 and Spring Boot 4.** - Strong understanding of object-oriented programming, microservices architecture, RESTful APIs, and modern back-end development principles. - Practical experience with PostgreSQL, including database design, SQL query optimisation, and efficient data management. - Hands-on experience with AWS cloud services and developing or integrating cloud-based applications. - Ability to deliver technical solutions independently while collaborating effectively with cross-functional teams in Agile or Scrum project environments. **Bonus Points For** - Experience delivering technology solutions within financial services, payments, or transaction-processing environments. - Familiarity with AWS services such as ECS, EKS, Lambda, RDS, S3, or CloudWatch. - Experience with containerisation technologies such as Docker and Kubernetes, alongside CI/CD pipelines and automated deployment processes. - Knowledge of automated testing frameworks such as JUnit, Mockito, and integration testing tools. - Understanding of event-driven architecture, messaging technologies such as Kafka, and application monitoring and observability practices. **B2B cooperation in a hybrid model, with the option to provide services from the Warsaw office to the extent agreed based on project needs.** **Recruitment Process:** 1. HR Interview with the recruiter 2. Technical Interview 3. Client Interview 4. Feedback and offer #LI-HYBRID