Senior Backend Developer – Kotlin, Spring Boot

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HumanIT Digital Consulting

WebsiteLinkedInAll Job Openings

51 - 200 employees

Founded 2020

🤝 B2B

🎯 Recruiter

B2B • Recruitment

HumanIT Digital Consulting is a human-centered digital consulting and talent services firm that helps organizations find, onboard and grow people while delivering digital transformation and IT-related consulting. The company emphasizes people-first values and offers services to both jobseekers and hiring companies across offices in Portugal and Switzerland. HumanIT positions itself as a partner for businesses seeking human talent and for professionals seeking career opportunities in digital and IT roles.

📋 Description

• Help build a custom FHIR server from the ground up • Implement a dynamic query engine that operates on flexible parameters and FHIR structure definitions at runtime • Work closely with a team of 3 internal developers, aligning on design decisions, task division, and progress • Join to implement the remaining components, with a focus on the query engine

🎯 Requirements

• Demonstrable experience building abstract backend implementations — query engines, rule engines, dynamic data processing systems, or comparable high-abstraction work • Strong ability to work at a high level of abstraction — the query engine operates on dynamic parameters and FHIR structure definitions, not a fixed set of operations • Solid experience with Kotlin and/or JVM-based backend development; Spring Boot experience strongly preferred • Experience with PostgreSQL, including JSONB storage patterns and complex relational query design • Ability to implement and maintain a comprehensive JUnit test suite alongside production code • Strong communication and collaboration skills — you'll be working closely with the internal team on a shared task breakdown, not independently • Comfortable aligning on design decisions, surfacing blockers, and adapting approach based on team feedback • English B2 or above — required for daily collaboration with an international team • Based in Europe (Portugal preferred), available to work fully remote