Senior/Lead Java Developer (with Google Cloud Platform)

We’re looking for an experienced Senior Java Developer / Tech Lead to design and build modern digital solutions for the energy sector.

After an initial onboarding period with Spyrosoft (3–6 months), you’ll join our partner company – Adenergo.pl, a startup that’s part of the ecosystem of Leroy Merlin, one of the leading French retail groups specializing in DIY (do-it-yourself), home improvement, and home décor.

Adenergo combines a strong international background with a clear mission: to develop innovative and sustainable solutions supporting the energy transition and positive living environments.

Join us and be part of this exciting journey!

Your main responsibilities

Lead the design and development of backend systems in Java 21 using Spring Boot 3 (Spring Framework 6).

• Provide technical leadership, guide the team in architectural decisions, and ensure adherence to best practices.

• Integrate backend systems with Google Cloud Platform (GCP) and Keycloak.

• Ensure data consistency and reliability using PostgreSQL and Liquibase.

• Build and maintain automated test environments using AssertJ and Testcontainers.

• Work closely with product and DevOps teams to deliver scalable, secure, and cloud-native applications.

Tech stack

• Java 21, Lombok

• Spring Boot 3 / Spring Framework 6

• PostgreSQL, Liquibase

• AssertJ, Testcontainers

• Google Cloud Platform (GCP)

• Keycloak