Senior Java Backend Architect — Hybrid Microservices

Careerwise Recruitment; Galway; Hybrid; EUR 90,000 - 120,000; Full time

Job summary

CareerWise Recruitment is seeking a Senior Java Software Engineer for our Galway-based client to join dynamic R&D teams spanning Data Engineering, Data Science, Firmware/IoT, DevOps, UX, and Cybersecurity. The role focuses on designing, scaling, and maintaining resilient microservices powering millions of connected assets in real time.

The ideal candidate has 5+ years in Java with Spring, strong API and microservice experience, and a collaborative, Agile mindset.

Qualifications

• 5+ years of hands-on Java software development with Java 17/21 and the Spring ecosystem.
• Experience designing RESTful APIs and stateless microservices architectures.
• Strong relational database skills (PostgreSQL/MySQL/Oracle) and data modelling.
• Testing mindset with unit/integration testing (JUnit, Mockito) and performance benchmarking.
• Proficient with Git, Maven/Gradle, Docker, and CI/CD pipelines.

Responsibilities

• Architect secure, multi-tenant microservices and RESTful APIs.
• Develop robust Java/Spring Boot backend in production-grade code.
• Establish automated tests and diagnose distributed systems across services.
• Collaborate with DevOps to maintain CI/CD pipelines and containerized deployments.
• Provide technical leadership and mentorship in an Agile Scrum environment.
• Drive features end-to-end from concept to production within a fast-paced team.

Skills

Java 17+/21+

Spring Boot

RESTful APIs

Relational databases

JUnit/Mockito

Git

Maven/Gradle

Linux/Windows

Agile/Scrum

Education

Bachelor's degree in Computer Science

Tools

Docker

Kubernetes

CI/CD tools

AWS

Job description

CareerWise Recruitment is seeking a Senior Java Software Engineer for our Galway-based client to join dynamic R&D teams spanning Data Engineering, Data Science, Firmware/IoT, DevOps, UX, and Cybersecurity. The role focuses on designing, scaling, and maintaining resilient microservices powering millions of connected assets in real time.

The ideal candidate has 5+ years in Java with Spring, strong API and microservice experience, and a collaborative, Agile mindset.