Java Developer

RE Partners Consulting; United Kingdom; Hybrid; GBP 37,000 - 149,000; Full time

Job summary

A leading business technology consultancy is looking for an experienced Java Developer to join their team. This hybrid role will focus on building low-latency, high-throughput systems in the payments processing domain. Candidates should have strong Core Java and SpringBoot expertise, and thrive in a dynamic engineering culture. Competitive salary and referral bonuses offered, with a focus on performance optimization and modern technologies.

Benefits

Referral bonus

Flexible working environment

Diverse, inclusive workplace

Qualifications

• 5+ years of experience in Core Java development.
• Proficient in SpringBoot and microservice architecture.
• Experience in low-latency applications.

Responsibilities

• Design and develop low-latency backend systems.
• Build RESTful APIs for payment workflows.
• Collaborate with DevOps and QA teams.

Skills

Core Java development

SpringBoot expertise

Microservice architecture

Performance optimization

Cloud experience with AWS

MongoDB and NoSQL knowledge

Tools

Red Hat OpenShift

Kubernetes

Kafka

RabbitMQ

Job description

Overview

We are a fast growing business and technology consultant company co-founded in 2019. We offer a custom-tailored, white-glove engineering service fit for our clients, because a digital transformation is more than just technology. With a successful track record of being a preferred vendor for Fortune 500 companies and as a trusted partner for some of the industry’s leading companies, our global talent has helped many clients achieve their goals.

The 3 G’s of RE:

“Get Shit Done.”

“Get Over Shit.”

“Give a Shit.”

We are seeking an experienced and opinionated Java Developer 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 or US 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 Core Java and SpringBoot.
• Build and maintain RESTful APIs and microservices that power secure payment workflows.
• Work with XML-based 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.
• Participate in architectural discussions, advocate for best practices, and provide mentorship to peers.
• Drive performance tuning, fault tolerance, and observability improvements across services.

Required Skills & Experience

• 5+ years of experience in Core Java development with a focus on performance and memory optimization.
• Proficient in SpringBoot and microservice-based architecture.
• Proven experience with low-latency, high-throughput applications (sub-millisecond response times a plus).
• Experience working with XML and message parsing/transformation.
• Hands-on experience deploying applications on Red Hat OpenShift and/or Kubernetes.
• Strong cloud experience with AWS services such as ECS, EKS, Lambda, S3, etc.
• Solid understanding of MongoDB and NoSQL design patterns.
• Prior experience in Payments Processing, financial services, or banking systems.
• Strong communication skills and a bias toward action and opinionated design decisions.

Nice to Have

• Familiarity with messaging systems (Kafka, RabbitMQ, etc.).
• Exposure to container security and performance tuning on OpenShift.
• Knowledge of payment gateways, ISO 20022, or SWIFT formats.

Collaborative, fast-paced, and engineering-driven culture. 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 status.

Salary Range

The base salary range for this role is $50,000–$200,000 per year. This is our good-faith estimate at the time of posting. Actual base pay will depend on factors such as skills, experience, and location. This role may also be eligible for additional compensation (e.g., bonus/equity) and benefits, as applicable.