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 and client success.
- Benefits: Competitive salary, hybrid work model, and referral bonuses for bringing friends.
- Other info: Emphasis on engineering autonomy and clean code in a fast-paced culture.
- Why this job: Join a diverse team shaping the future of business technology consulting.
- Qualifications: 10+ years in Java development with strong performance optimisation skills.
The predicted salary is between 50000 - 200000 € 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 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 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.
- 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.
- 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.
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.
Principal Java Developer in London employer: RE Partners Consulting
At RE Partners, we pride ourselves on being a fast-growing business and technology consultancy that values engineering excellence and employee satisfaction. Our collaborative and opinionated culture fosters autonomy and innovation, allowing you to thrive while working on cutting-edge projects in the payments processing domain. With a strong focus on employee growth and a remarkable 7% attrition rate, we offer a supportive environment where your contributions are recognised and rewarded.
StudySmarter Expert Advice🤫
We think this is how you could land Principal Java Developer in London
✨Tip Number 1
Network like a pro! Reach out to your connections in the industry, attend meetups, and engage in online forums. The more people you know, the better your chances of landing that Principal Java Developer role.
✨Tip Number 2
Show off your skills! Create a portfolio showcasing your best projects, especially those involving low-latency systems and microservices. This will give potential employers a taste of what you can bring to the table.
✨Tip Number 3
Prepare for interviews by brushing up on your technical knowledge and soft skills. Practice coding challenges and be ready to discuss your experience with Java, SpringBoot, and cloud environments like AWS.
✨Tip Number 4
Don’t forget to apply through our website! It’s the best way to ensure your application gets noticed. Plus, we love seeing candidates who are genuinely interested in joining our team.
We think you need these skills to ace Principal Java Developer in London
Some tips for your application 🫡
Tailor Your CV:Make sure your CV is tailored to the Principal Java Developer role. Highlight your experience with Java, SpringBoot, and any relevant projects that showcase your skills in low-latency, high-throughput systems.
Craft a Compelling Cover Letter:Your cover letter is your chance to shine! Share your passion for performance and how your experience aligns with our values. Don’t forget to mention your collaborative spirit and opinionated design approach!
Showcase Relevant Projects:Include specific examples of projects where you’ve built RESTful APIs or worked with messaging systems. This will help us see your hands-on experience and how you can contribute to our team.
Apply Through Our Website:We encourage you to apply directly through our website. It’s the best way for us to receive your application and ensures you’re considered for this exciting opportunity!
How to prepare for a job interview at RE Partners Consulting
✨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. They’ll want to see that you can not only code but also think critically about performance.
✨Showcase Your Experience with Low-Latency Systems
Prepare specific examples of low-latency, high-throughput applications you've worked on. Be ready to explain the challenges you faced and how you overcame them, especially if you have experience with sub-millisecond response times.
✨Familiarise Yourself with Their Tech Stack
Get to grips with Red Hat OpenShift, AWS services, and MongoDB. If you’ve deployed applications in these environments, be prepared to share your experiences and any best practices you’ve developed along the way.
✨Embrace the Culture of Collaboration
This company values a collaborative yet opinionated engineering culture. Be ready to discuss how you’ve worked with cross-functional teams in the past and how you advocate for best practices while mentoring others.
