Principal Java Developer
We are seeking an experienced and opinionated Principal Java Engineer to join our high-performing engineering team, working on low latency, high-throughput systems in the payments processing domain. This hybrid role is based in the UK and offers the opportunity to build scalable, real-time services using modern technologies.If you’re passionate about performance, have strong Core Java and SpringBoot expertise, and thrive in a collaborative yet opinionated engineering culture, we want to hear from you
.Key Responsibilities
- :Design, develop, and optimize low-latency, high-throughput backend systems using Java
- .Build and maintain RESTful APIs and microservices that power secure payment workflows
- .Work with messaging standards and protocols commonly used in financial transactions
- .Deploy, monitor, and scale applications in Red Hat OpenShift and AWS cloud environments
- .Integrate with MongoDB and other NoSQL/SQL datastores for real-time data management
- .Collaborate with DevOps, Product, and QA teams to ensure production-grade solutions
- .Drive architectural changes, advocate for best practices, and provide mentorship to peers
- .Drive performance tuning, fault tolerance, and observability improvements across services
.
Required Skills & Experienc
- e:10+ years of experience in Java development with a focus on performance and memory optimizatio
- n.Proficient in Mongo, Spring and microservice-based architectur
- e.Proven experience with low-latency, high-throughput applications (sub-millisecond response times a plus
- ).Hands-on experience deploying applications on Red Hat OpenShift and/or Kubernete
- s.Strong cloud experience with AWS services such as ECS, EKS, Lambda, S3, et
- c.Strong communication skills and a bias toward action and opinionated design decision
s.
Nice to Ha
- ve:Familiarity with messaging systems (Kafka, RabbitMQ, et
- c.)Prior experience in Payments Processing, financial services, or banking syste
- ms.Exposure to container security and performance tuning on OpenShi
- ft.Knowledge of payment gateways, ISO 20022, or SWIFT forma
ts.
Location & Work Environm
- ent:Hybrid work model in London,
- UK.Collaborative, fast-paced, and engineering-driven cult
- ure.Emphasis on engineering autonomy, architectural decision-making, and clean
code
Join Our Global Team: We invite you to apply for the position at RE Partners. Join us in shaping the future of business technology consulting and transforming the way organizations thrive in a digital world. As a diverse, woman-owned global business, we pride ourselves on keeping talent happy – our 7% attrition rate speaks volumes. Bring your talented friends along and earn a referral
bonus
Equal Opportunity Employer: We are an equal opportunity employer and welcome applications from all qualified individuals regardless of race, color, religion, gender, sexual orientation, gender identity or expression, national origin, age, disability, or veteran s
tatus.
UK
