Backend Java Developer

Backend Java Developer

Ubisoft

Barcelona, Spain

JOB DESCRIPTION

At Ubisoft Barcelona Mobile, we’re not just making games - we’re building worlds.

As a Backend Java Developer, you’ll be at the heart of our live game experiences, crafting scalable, high-performance backend systems that support millions of players worldwide. Whether you're a gamer or simply passionate about building great tech, your work will directly shape the future of mobile entertainment.

What You’ll Be Doing:

• Develop the server-side components for live games using Java, Redis, MongoDB, and NodeJS.
• Collaborate with game teams to implement new features and services.
• Customize and optimize game servers to meet production standards.
• Deploy and maintain applications in both internal and live environments.
• Perform DevOps tasks to ensure system reliability and scalability.
• Estimate and plan technical work, even with limited information.
• Participate in a rotating on-call schedule to support production environments.
• Write clean, maintainable code and contribute to technical documentation.

QUALIFICATIONS

• Strong Java programming skills and solid object-oriented design knowledge.
• 2+ years of experience building and deploying server-side applications.
• Familiarity with JavaScript or related scripting frameworks.
• Experience with relational and non-relational databases.
• Proficiency with Git and Gitflow best practices.
• A collaborative mindset and strong communication skills.
• A proactive, detail-oriented approach to problem-solving.
• Good command of English and a valid work permit for Spain.

Nice to Haves:

• Degree in Computer Science, Math, or a related field.
• Experience with NodeJS, Vue.js, Java EE, Docker, Kubernetes, AWS, or Terraform.
• Knowledge of app store ecosystems or social network integrations.
• Familiarity with Linux shell scripting.
• Spanish or Catalan language skills.

Apply Now