J2EE Developers

Ocho People; Belfast; Remote; GBP 50,000 - 80,000; Full time

Job summary

A leading recruitment agency is seeking a J2EE Software Engineer to design and develop server-side products and APIs for a top US payments company. This 100% remote role offers a salary of £50-80k plus bonus. Ideal candidates will have strong experience with J2EE and SQL, and a background in cloud technologies like GCP. Join a long-tenured engineering team delivering high-throughput systems globally.

Benefits

Remote work option

Competitive salary

Career development opportunities

Qualifications

• 3-6 years' experience for SE II; 8+ years for Senior roles.
• Strong SQL and database design skills required.
• Experience with automated tests is essential.

Responsibilities

• Design and maintain J2EE services and APIs.
• Build persistence layers with JPA2/Hibernate.
• Engineer scalable, fault-tolerant systems.

Skills

Server-side product development with J2EE/Jakarta EE

Hands-on with JBoss/WildFly application servers

JPA2/Hibernate with MySQL 8

Infinispan and JGroups understanding

JAX-RS/REST and API design

Concurrency/multithreading

Maven

CI/CD practices

BDD/TDD practice

Education

Engineering degree or equivalent

Tools

Docker

Kubernetes

GCP/AWS

Job description

Overview

J2EE Software Engineers (Mid to Senior Developer roles available-100% remote)

Salary £50-80k + bonus

About the Company

Our client is building the front-of-house payment gateway for a fast-growing, private, top-25 US payments company. The platform has a 19-year lineage with a clear architectural direction in J2EE, modernised with hybrid cloud (GCP + on-prem) for scale, security, and compliance (PCI-DSS). You’ll join a distributed, long-tenured engineering team delivering high-throughput, highly available transaction systems used across the globe.

The Role

As a J2EE Software Engineer, you'll design and develop server-side products and APIs on the payment gateway-owning your deliverables end-to-end: discovery → design → development → automated tests → release → monitoring. You'll work in small, empowered teams using BDD/TDD and CI/CD, shipping resilient features for real merchants and real transactions.

Key Responsibilities

• Design, implement, and maintain J2EE services and RESTful APIs (JAX-RS/RESTEasy).
• Build robust persistence layers with JPA2/Hibernate on MySQL 8 (InnoDB).
• Engineer scalable, fault-tolerant systems with clustered caching (Infinispan) and JGroups.
• Contribute to deployment automation (Liquibase, Ansible) and CI/CD pipelines.
• Write automated acceptance and regression tests within a BDD framework; partner closely with QA.
• Participate in estimation, planning, code/design reviews, and production readiness & monitoring.
• Collaborate across product, security, and ops to meet PCI-DSS and reliability goals.

Essential Criteria

• Server-side product development with J2EE/Jakarta EE (not a Spring-only/microservices role).
• Hands-on with JBoss/WildFly application servers in production.
• JPA2/Hibernate with MySQL 8 (InnoDB); strong SQL and database design.
• Infinispan (or equivalent clustered cache) and understanding of JGroups.
• JAX-RS/REST, API design, HTTP fundamentals, and secure web-app principles (PCI awareness).
• Concurrency/multithreading and performance troubleshooting.
• Tooling: Maven, CI/CD (Jenkins/GitLab/GitHub Actions), Liquibase, Ansible.
• Practice with BDD/TDD; comfortable authoring automated tests.
• SE II: ~3-6 years' experience. Senior: 8+ years with leadership/ownership stories.

Nice to Have

• BigQuery, WebSockets, Pub/Sub (Kafka/RabbitMQ/SNS/SQS).
• Docker/Kubernetes; GCP/AWS; Observability (metrics/logs/tracing).

Why Join

• Impact at scale: Core gateway that powers real-world payments across the globe.
• Modernised J2EE: Stable architecture + contemporary engineering (IaC, automation, hybrid cloud).
• End-to-end ownership: Small teams, big outcomes, minimal bureaucracy.
• Distributed culture: Colleagues across IE, NI, UK, and EU; collaborative, low-ego environment.

How to Apply

If you meet the criteria and want to build reliable, high-throughput payments systems, apply via this link. Alternatively, reach out to Phil Gamble for an informal chat via Linked-In or Whats-App.

About Phil Gamble

Phil has 20+ years in tech recruitment across the US, UK, and Ireland, delivering on complex hiring campaigns for global software companies. He takes a personalised, hands-on approach and has a long track record of helping engineers land roles they love.

Recent LinkedIn Testimonials

“I cannot recommend Phil and Ocho enough… Phil is a professional who does not treat his candidates as resources…”

“Phil was by far the best recruiter I have ever dealt with… I wouldn’t hesitate to recommend Phil to my friends or colleagues.”

“Phil takes the time to understand what I'm looking for… and he delivers.”