Java Software Engineer - Barcelona (Hybrid)

Wizeline

Spain💼 Full-time🗓 2026-09-11 → 2026-09-26

Core

Design, build, and maintain distributed Java microservices and RESTful APIs for AI-powered digital products.

Role type

Senior IC Java Software Engineer (Backend)

Builds

Scalable microservices, RESTful APIs, and containerized applications

Domain

Enterprise software, AI-native platforms, Cloud infrastructure

Deliverable

production ML models | product features | infrastructure

Required skills

Java (11/17/21), Spring Boot, Microservices architecture, Docker, Kubernetes, CI/CD pipelines, Unit testing (JUnit/Mockito), Cloud platforms (AWS/Azure)

Preferred skills

AI tooling proficiency, Performance optimization, Service mesh patterns (Istio)

Technologies

Java, Spring, Spring Boot, Istio, Docker, Kubernetes, Jenkins, Prometheus, Grafana, AWS, Azure, JUnit, Mockito

Responsibilities

Design and maintain distributed systems using service mesh patterns; Build RESTful APIs and integrate Spring Data/JPA; Manage CI/CD pipelines and automated testing suites; Optimize performance and resolve bottlenecks in large-scale systems

Seniority

Senior, hands-on IC

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About Wizeline

Wizeline prioritizes a culture of diversity and development for its nearly 2,000 person team spread across the globe. We believe great technology comes from a mix of talents and perspectives. Our core values of ownership, innovation, community, and inclusivity are central to our work. Wizeline is invested in its employees' growth, offering opportunities to create personalized career paths and develop in-demand skills. We even have a free education program, Wizeline Academy, to help both employees and the broader community upskill in tech.