At a Glance
- Tasks: Design and optimise high-performance backend systems using Java in a collaborative environment.
- Company: Fast-growing tech consultancy with a focus on digital transformation.
- Benefits: Hybrid work model, competitive salary, and a supportive culture.
- Other info: Diverse, woman-owned company with excellent career growth and low attrition.
- Why this job: Join a team shaping the future of business technology and make a real impact.
- Qualifications: 10+ years in Java development with strong performance optimisation skills.
The predicted salary is between 80000 - 100000 € per year.
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.
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 & Experience
- 10+ years of experience in Java development with a focus on performance and memory optimization.
- Proficient in Mongo, Spring and microservice‑based architecture.
- 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 Kubernetes.
- Strong cloud experience with AWS services such as ECS, EKS, Lambda, S3, etc.
- Strong communication skills and a bias toward action and opinionated design decisions.
Nice to Have
- Familiarity with messaging systems (Kafka, RabbitMQ, etc.)
- Prior experience in Payments Processing, financial services, or banking systems.
- Exposure to container security and performance tuning on OpenShift.
- Knowledge of payment gateways, ISO 20022, or SWIFT formats.
Hybrid work model in London, UK. Collaborative, fast‑paced, and engineering‑driven culture. Emphasis on engineering autonomy, architectural decision‑making, and clean code.
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.
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.
Principal Java Engineer in Cambridge employer: RE Partners
At RE Partners, we pride ourselves on being a fast-growing business and technology consultancy that values engineering excellence and innovation. Our collaborative and opinionated work culture fosters autonomy and encourages professional growth, making it an ideal environment for experienced engineers to thrive. With a strong focus on employee satisfaction reflected in our low attrition rate, we offer a unique opportunity to work on cutting-edge projects in the heart of London, while being part of a diverse and inclusive team dedicated to transforming the digital landscape.
StudySmarter Expert Advice🤫
We think this is how you could land Principal Java Engineer in Cambridge
✨Network Like a Pro
Get out there and connect with people in the industry! Attend meetups, webinars, or even just grab a coffee with someone who works at your dream company. Building relationships can open doors that a CV just can't.
✨Show Off Your Skills
Don’t just talk about your experience; demonstrate it! Create a portfolio showcasing your projects, especially those involving Java and SpringBoot. This gives potential employers a taste of what you can do and sets you apart from the crowd.
✨Ace the Interview
Prepare for technical interviews by brushing up on your coding skills and understanding system design principles. Practice common interview questions and be ready to discuss your past projects in detail. Confidence is key!
✨Apply Through Our Website
We encourage you to apply directly through our website. It’s the best way to ensure your application gets seen by the right people. Plus, you’ll get a feel for our culture and values right from the start!
We think you need these skills to ace Principal Java Engineer in Cambridge
Some tips for your application 🫡
Tailor Your CV:Make sure your CV is tailored to the Principal Java Engineer role. Highlight your experience with low-latency systems and any relevant projects you've worked on. We want to see how your skills align with what we're looking for!
Craft a Compelling Cover Letter:Your cover letter is your chance to shine! Share your passion for performance and your opinionated approach to engineering. Let us know why you’re excited about joining our team and how you can contribute to our collaborative culture.
Showcase Your Technical Skills:Don’t forget to showcase your technical expertise in Core Java, SpringBoot, and cloud technologies like AWS. We love seeing specific examples of how you've optimised performance or built scalable services in your previous roles.
Apply Through Our Website:We encourage you to apply through our website for a smoother application process. It helps us keep track of your application and ensures you don’t miss out on any important updates from us!
How to prepare for a job interview at RE Partners
✨Know Your Java Inside Out
Make sure you brush up on your Core Java and SpringBoot skills. Be ready to discuss performance optimisation techniques and how you've applied them in past projects. Prepare examples that showcase your experience with low-latency, high-throughput systems.
✨Familiarise Yourself with the Payments Domain
Since this role is focused on payments processing, it’s crucial to understand the industry standards and protocols. Research messaging systems like Kafka or RabbitMQ, and be prepared to discuss any relevant experience you have in financial services or banking systems.
✨Show Off Your Cloud Skills
This position requires hands-on experience with AWS and Red Hat OpenShift. Be ready to talk about your experience deploying applications in these environments, and consider preparing a few scenarios where you’ve successfully scaled applications or improved performance.
✨Emphasise Collaboration and Mentorship
The company values a collaborative culture, so highlight your experience working with cross-functional teams. Share examples of how you've mentored peers or driven architectural changes, and demonstrate your ability to advocate for best practices in engineering.
