Senior Java Developer

j-labs is a Polish software company founded in 2010, specializing in providing complete development teams, individual engineers, and project outsourcing in agile models. The company has technical specializations in Java, JavaScript, .NET, Kotlin, Python, QA, and DevOps, with centers of excellence in microservices and DLT. It operates in three locations: Cracow, Warsaw, and Munich, serving over 75 clients in fintech, telco, e-commerce, travel & airlines, automotive, logistics, and banking, employing over 500 engineers with an average experience of 11 years.

• Very good knowledge of Java, especially version 21+, including JVM internals, memory management, and Project Loom.
• Experience with Spring Boot.
• Practical experience with Google Cloud Platform services: GKE, Cloud Spanner, Cloud SQL.
• Experience with Pub/Sub or Apache Kafka.
• Experience implementing Zero Trust and OAuth2/OpenID Connect.
• Experience with open-source technologies.
• Minimum B2 level proficiency in English.
• At least 3 years of experience in a similar position.

• Join the team developing a backend software security platform transitioning to open-source and cloud-native solutions.
• Work with Java 21+ and Project Loom virtual threads.
• Influence the architecture and development of the entire system.
• Implement Zero Trust and OAuth2/OpenID Connect in production code.
• Work with Google Cloud Platform services including GKE, Cloud Spanner, Cloud SQL, and Pub/Sub.
• Design and develop backend components using Java and Spring Boot.
• Work with cloud architecture and event-driven systems.