Senior Java

Northern Ireland Water Limited; Belfast; Hybrid; GBP 100,000 - GBP 125,000; Full time

Job summary

A financial technology firm is seeking an experienced Senior Java Developer to join their dynamic engineering team in Belfast. This role involves designing and maintaining high-performance Java applications and building scalable microservices in a hybrid work environment. Candidates should have extensive experience in Java, Spring frameworks, and a strong background in FinTech. This is a contract role offering flexibility and the chance to work on impactful projects within a fast-paced industry.

Qualifications

• 7+ years' commercial experience as a Java Developer.
• Strong expertise in Java (8+), Spring / Spring Boot.
• Experience building microservices and RESTful APIs.
• Solid understanding of SQL and relational databases.
• Experience with cloud platforms (AWS/Azure) preferred.
• Exposure to CI/CD pipelines and DevOps practices.
• Prior experience in FinTech, banking, or financial services is highly desirable.
• Experience in high-throughput, low-latency systems.

Responsibilities

• Design, develop, and maintain high-performance Java applications.
• Contribute to system architecture and technical decision-making.
• Build scalable, resilient microservices using modern Java frameworks.
• Collaborate closely with product owners, architects, and DevOps teams.
• Ensure high standards of code quality, performance, and security.
• Mentor junior developers and promote best engineering practices.

Job description

Overview

Senior Java Developer

DRC - 6-8 Months (Likely Extension)

Dublin (Hybrid)

A FinTech client based in Dublin is recruiting for an experienced Senior Java Developer to join a high-performing engineering team working on large-scale, mission-critical financial systems.

This is a day-rate contract offering long-term stability, modern technology, and the opportunity to work on high-impact projects within a fast-moving FinTech environment.

Responsibilities

• Design, develop, and maintain high-performance Java applications
• Contribute to system architecture and technical decision-making
• Build scalable, resilient microservices using modern Java frameworks
• Collaborate closely with product owners, architects, and DevOps teams
• Ensure high standards of code quality, performance, and security
• Mentor junior developers and promote best engineering practices

Experience

• 7+ years' commercial experience as a Java Developer
• Strong expertise in Java (8+), Spring / Spring Boot
• Experience building microservices and RESTful APIs
• Solid understanding of SQL and relational databases
• Experience with cloud platforms (AWS/Azure) preferred
• Exposure to CI/CD pipelines and DevOps practices
• Prior experience in FinTech, banking, or financial services is highly desirable
• Experience in high-throughput, low-latency systems