Lead Java Developer

Andersen is a global software development company with over 18 years of experience supporting businesses worldwide in their digital transformation. Headquartered in Poland, it operates development centers across multiple countries including Germany, the USA, the UK, Lithuania, Hungary, Kazakhstan, Georgia, Azerbaijan, Cyprus, and the UAE. Andersen offers end-to-end IT services including custom software development, API integration, system architecture, legacy modernization, and long-term support. The company has a team of over 3,700 experts in 16+ global locations and has delivered over 1,000 projects across industries such as Healthcare, FinTech, Logistics, Automotive, Manufacturing, E-commerce, Multimedia & Entertainment.

• Experience in backend development for 5+ years.
• Experience in leading and motivating teams.
• Strong hands-on experience with Java, Spring Boot, and REST APIs.
• Experience in telecom environments.
• Deep understanding of OAuth2 / OIDC.
• Proven production experience with Keycloak.
• Experience with Docker and CI/CD pipelines.
• Solid SQL and JPA / Hibernate knowledge.
• Experience leading code reviews, mentoring, and delivery ownership.
• Level of English – from Upper-Intermediate and above.

Nice to have:

• Experience with Quarkus.
• Knowledge of Kubernetes (Helm, Operators).
• Experience with Kafka / RabbitMQ.
• Understanding of security best practices (OWASP, TLS, secrets).

• Developing backend services using Java, Spring Boot, and REST APIs.
• Implementing and supporting OAuth2 / OIDC-based authentication flows.
• Configuring and managing Keycloak (realms, clients, roles, token policies).
• Leading code reviews, mentoring team members, and ensuring high-quality delivery.
• Building containerized applications using Docker.
• Implementing and supporting CI/CD pipelines.
• Working with SQL databases (PostgreSQL / MySQL).