HOME Software Engineering & Dev Java Software Engineer - Barcelona (Hybrid)
WIZELINE VERIFIED EMPLOYER

Java Software Engineer - Barcelona (Hybrid).

Software Engineering & Dev

Java Software Engineer - Barcelona (Hybrid): our view in 3 lines...

  • The Role:This role is for a senior Java software engineer building AI-powered digital products and platforms for client solutions.
  • The Person:The person will build RESTful APIs, design and maintain distributed microservices, work with container orchestration and deployment strategies, and create automated testing and monitoring for large-scale systems.
  • Requirements:The ideal candidate has Java 11/17/21, Spring and Spring Boot, microservices architecture, Docker, Kubernetes, CI/CD pipelines, Jenkins, JUnit, Mockito, Prometheus, Grafana, AWS or Azure, and integration testing.

About the role

We are:

Wizeline, a global AI-native technology solutions provider, develops cutting-edge, AI-powered digital products and platforms. We partner with clients to leverage data and AI, accelerating market entry and driving business transformation. As a global community of innovators, we foster a culture of growth, collaboration, and impact.

With the right people and the right ideas, there’s no limit to what we can achieve

Are you a fit?

Sounds awesome, right? Now, let’s make sure you’re a good fit for the role:

Must-have Skills

Core Technical Skills

  • Java (11/17/21) – Deep understanding of multithreading, memory management, performance optimization, and concurrent data processing.
  • Spring & Spring Boot – Expertise in building RESTful APIs, dependency injection, configuration management, and Spring Data/JPA integration.
  • Microservices Architecture – Experience designing and maintaining distributed systems using service mesh patterns (Istio) with Docker and Kubernetes.

Infrastructure & DevOps

  • Strong understanding of CI/CD pipelines (e.g., Jenkins), automated testing, and environment management (staging, prod, integration).
  • Experience with container orchestration, deployment strategies (blue/green, rolling updates), and monitoring tools (Prometheus, Grafana).
  • Working knowledge of cloud environments (AWS or Azure)

Testing & Quality

  • Proficiency with JUnit, Mockito, and integration testing frameworks.
  • Ability to design and maintain automated API tests and validation suites within CI/CD pipelines.
  • Experience defining performance metrics, profiling, and resolving bottlenecks in large-scale systems.

Nice-to-have:

  • AI Tooling Proficiency: Leverage one or more AI tools to optimize and augment day-to-day work, including drafting, analysis, research, or process automation. Provide recommendations on effective AI use and identify opportunities to streamline workflows.

What we offer:

  • A High-Impact Environment
  • Commitment to Professional Development
  • Flexible and Collaborative Culture
  • Global Opportunities
  • Vibrant Community
  • Total Rewards

 

*Specific benefits are determined by the employment type and location.

Find out more about our culture here.

Published September 11, 2026
Location Barcelona, Spain