Middle​/Senior Full Stack Engineer

Middle/Senior Full Stack Engineer ID73950

Full time | Agile Engine | Spain

Posted On 07/16/2026

City Barcelona

State/Province Barcelona (Barcelona)

08001

IT Services

Agile Engine 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.

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

We are looking for a Senior Full Stack Engineer to build robust server-side solutions for a SaaS platform operating at scale, working across Java, React, SQL, Redis, and Elasticsearch. You will contribute to architecture decisions, design reusable client integration systems, and participate in code reviews and CI/CD processes as a trusted technical resource. The role requires 5–6 hours of daily EST overlap and prior SaaS production experience.

• Build a reusable client integration system following secure cloud software best practices;
• Collaborate with design and product teams to gather requirements, create estimates, plan sprints, and meet delivery timelines;
• Plan and accurately estimate development and delivery timelines;
• Contribute to technical documentation and automated build and deployment processes to improve engineering efficiency;
• Review code submitted by other engineers and participate in the pull-request review process.

• 4+ years of SaaS experience;
• High level of proficiency in Java, React, and SQL;
• Knowledge of Microservices architecture;
• Dev Ops mindset focused on automation and continuous improvement;
• Understanding of observability and familiarity with strong CI/CD practices;
• Proven ability to meet deadlines, motivate others, and consistently produce high-quality, impactful results;

• Experience building software in the cloud, preferably with AWS.

• Professional growth:
  Mentorship, Tech Talks, 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:
  Flexible schedule with remote and office options.

Each step helps us understand your skills and overall fit. If it's a match, you'll receive an offer.