Senior Java Developer - Brussels

This is a full-time hybrid role for a Senior Java Developer based in Brussels, with flexibility for some remote work. The Senior Java Developer will design, build, and maintain scalable software applications, with a focus on microservices architecture. Day-to-day responsibilities include developing high-quality and efficient Java code using the Spring Framework, collaborating with cross-functional teams, and ensuring the performance and reliability of the platform.

• English or French + good working knowledge of English

Java Backend - required

• Java 17+ / Spring Boot - REST APIs, Spring Security
• Hibernate / JPA - ORM for PostgreSQL
• PostgreSQL - queries, migrations (Flyway / Liquibase)
• REST & OpenAPI - API design, Swagger documentation
• JUnit 5 / Mockito - unit and integration test coverage
• Docker / Kubernetes - containerised builds and orchestration

Nice to have

• ERP API experience - third-party integrations
• OAuth2 - authentication flows
• Prior SaaS product experience - a strong differentiator

10+ years of experience required · Senior level · Brussels, Belgium

Optisuite empowers opticians with innovative digital tools designed to streamline operations, enhance customer experiences, and drive business growth. Our platform simplifies daily tasks such as consultations, frame selection, and precise measurements, enabling opticians to focus on delivering exceptional customer care. By integrating technology and efficiency into a seamless platform, we eliminate outdated processes and bring modern solutions to optical practices. Based on innovation, we are shaping the future of optical retail. As a company in full expansion, we are scaling our platform, growing our team, and extending our reach across the optical sector. Join us at the right moment: early team members have the opportunity to participate in our ESOP (Employee Stock Ownership Plan), giving you a real stake in the company you help build.