Senior Java Engineer

The platform handles a high volume of data and workflows used by customers across multiple countries. The team is strengthening its foundations to ensure stability, consistency and long-term scalability - and they're looking for someone who can take a leading role on the Java side.

You'd become the Java reference point: someone who can set technical direction, build new services with Java + Spring + PostgreSQL, and help elevate the platform's engineering standards. There's also some existing functionality in Node.js, and part of the work involves gradually moving that logic into the new Java-based architecture.

This isn't a "ship fast and patch later" environment. Quality matters: clean architecture, solid testing, strong patterns, observability, and a product that needs to behave predictably for demanding clients.

What you'll do

• Design and build backend services using Java + Spring

• Bring architectural vision, patterns, and best practices

• Help migrate existing Node.js components into the new Java stack

• Work with clean/hexagonal architecture and rich domain models

• 6+ years of experience working with Java in complex or high-reliability environments

• Strong expertise with Spring and the ability to design services from scratch

• PostgreSQL experience is a must (data modelling, performance, migrations, consistency)

• Solid understanding of clean/hexagonal architecture, domain-driven thinking and tactical patterns

• Strong testing mindset and familiarity with CI/CD and engineering best practices

• Ability to review, challenge and elevate the team's technical decisions

• Experience working with existing codebases and migrating functionality is a plus (some parts currently in Node.js)

• Autonomy to make technical decisions without constant oversight

• Good communication skills and a collaborative mindset

• Based in Spain (remote)

• Experience collaborating with distributed and multicultural teams

• Remote work from anywhere in Spain + optional offices in several cities

• Competitive Salary

• Benefits: health insurance, training budget, meal vouchers, etc.

60.000€ - 75.000€ España 100% Remoto