J2EE Developers

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).
* Get hands-on with JBoss/Wild Fly 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/Git Lab/Git Hub 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:
* Big Query, Web Sockets, Pub/Sub (Kafka/Rabbit

MQ/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 Linked In 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."

Skills:

j2ee wildfly jboss jakarta Benefits:
Work From Home