AgileEngine is an Inc. 5000 company that creates award-winning software for Fortune 500 brands and trailblazing startups across 17+ industries. We rank among the leaders in areas like application development and AI/ML, and our people-first culture has earned us multiple Best Place to Work awards.

WHY JOIN US If you're looking for a place to grow, make an impact, and work with people who care, we'd love to meet you!

ABOUT THE ROLE We are looking for a

Senior Java Developer

to design, build, and maintain highly scalable and secure backend services and APIs for an international engineering team. You will work across Java 11+ and Spring Boot in a microservices architecture, optimize PostgreSQL and MongoDB database schemas, implement automated testing with JUnit and Mockito, and collaborate closely with frontend, product, and QA teams to deliver production-ready features. The role requires expert-level Java knowledge with strong performance optimization and code quality standards.

WHAT YOU WILL DO

Design, build, and maintain highly scalable, secure, and reliable backend services and APIs;

Translate application storyboards and use cases into functional, production-ready applications;

Identify bottlenecks and bugs, and devise solutions to mitigate and address these issues;

Collaborate closely with frontend developers, product managers, and QA to deliver end-to-end features;

Participate in peer code reviews to ensure code quality and adherence to best practices;

Maintain and optimize database schemas,



queries, and overall data architecture.

MUST HAVES

4+ years of professional backend software development experience ;

Expert-level knowledge of

Java 11+ and deep familiarity with the Spring/Spring Boot ecosystem ;

Broad knowledge of

backend architecture, Microservices, and RESTful APIs ;

Superior analytical and problem-solving ability;

Experience with

automated unit testing and test-driven development using JUnit and Mockito ;

Robust understanding of

performance issues, computational complexity, memory management, and code optimization ;

Familiarity with

industry-standard algorithms, design patterns, and PostgreSQL, MongoDB, or other relational/NoSQL databases ;

Effective communication skills to work with different teams across an international company;

Upper-intermediate English level.

PERKS AND BENEFITS

Professional growth : Mentorship, TechTalks, and personalized growth roadmaps.

Competitive compensation : USD-based pay with education, fitness, and team activity budgets.

Exciting projects : Modern solutions with Fortune 500 and top product companies.

Flextime : Adaptable schedule with remote and office options.

Meet Our Recruitment Process Application → Coding Challenge → Video Interview → Technical Interview or Hiring Manager Interview

Each step helps us understand your skills and overall fit.

If it’s a match, you’ll receive an offer.

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📌 Senior Java Developer (Madrid)
🏢 AgileEngine
📍 Madrid