Senior Full-Stack (Java/React)

Department: Engineering

Employment Type: Full Time

Location: Lisboa, Portugal, Portugal, Remote

Your day-to-day activities:

• Shipping customer-facing features behind feature flags, in small reviewed PRs
• Improving the code you touch: decomposing oversized services, adding tests, migrating backend code toward Java 21 / Spring Boot 3.x
• Building component and integration tests as part of everyday feature work
• Making the repos you work in AI-ready: context files, custom commands, patterns that let agents work safely
• Collaborating across pod boundaries in a mostly-shared codebase
• Participating in code reviews and pod ceremonies, and contributing to estimation
• Collaborating with the Quality Assistance team to build end-to-end tests for your features
• Investigating and fixing production issues in your pods area
• Documenting what you learn and decide
• Mentoring mid-level engineers and growing into pod-lead responsibilities
• As a Senior team member, you will be expected to actively participate in our hiring processes by serving on interview panels for future roles across the company.

You’re a perfect match if you have:

• 6+ years of commercial software engineering, genuinely full-stack (not 90/10 one way)
• Strong Java and Spring Boot, including JPA/Hibernate, database migrations (Flyway or similar), and relational data modeling
• Strong React and TypeScript with modern Next.js (App Router, Server Components, current data-fetching patterns)
• Solid PostgreSQL
• Experience modernizing or maintaining a large existing codebase in production
• Full ownership of what you ship, including testing: unit, integration, and E2E
• Shared-codebase discipline: trunk-based development, small frequent PRs, feature flags, respect for module boundaries
• Fluency with AI-assisted, agentic development: coding agents such as Claude Code, context engineering, AI code review and test generation
• Good security hygiene: no secrets in code, careful input handling, changes through reviewed PRs and CI
• Solid REST API design and experience integrating third-party services
• Familiarity with Agile/Scrum practices
• Proactive communication; you surface problems early and write things down
• Excellent spoken and written English
• Significant US Eastern Time overlap (we staff from our LATAM and EMEA delivery hubs)