Senior Backend Engineer (Java)
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Who are Benifex? 💚💜
We are a fast-moving technology company, and one of the most successful providers of online reward and benefits solutions in the world. We believe that everyone deserves an exceptional experience at work, every day, and build workplace technology that makes this happen. Benifex’s mission is to build remarkable experiences that employees love. Today Benifex supports more than five million employees in over 3,000 organisations across more than 100 countries. To help us on our quest to be the best, we need brilliant people on board and that’s where you come in. 🚀
Why should you apply? 🌟
- Impact: Contribute to the modernisation of critical shared services that power the entire OneHub platform, directly influencing thousands of users.
- Challenge: Solve complex technical problems while working with cutting-edge technologies like Kubernetes, microservices, and event-driven architectures.
- Career Growth: Gain experience in a collaborative, innovative team environment while working on foundational systems and exploring opportunities to mentor and lead.
- Top 10 Employer, Sunday Times Best Places to Work Awards
- Work for a profitable, fast-growing market leader in the online reward and benefits space
**Please note we are unable to offer visa sponsorship and require to people to be based in the UK or Ireland for this position**
Great benefits:
💰 £75,000-90,000
💻 Tech setup of your choice (MacBook Pro or equivalent, monitors, etc.)
📚 £/€800 annual learning budget, plus two hours per week as ‘Focus Fridays’.
🤸 Flexible work – choose a working setup that works for you, our only ask is to see you once a quarter in our UK HQ
✈️ 25 days holiday plus your local bank holidays
🎂 Your birthday off
❤️ Two half day wellbeing days
🩺 Healthcare cash plan to cover the costs of day to day healthcare
🧠 Employee Assistance Plan 24/7 365 support
🤒 Income Protection (75%) and life assurance (4x salary)
🤑 Pension scheme
🌟 Enhanced parental leave package - 26 weeks fully paid maternity leave and 4 weeks fully paid paternity leave
💳 £50 monthly allowance to spend on whatever takes your fancy, your very own Benifex card will be topped up at the start of each month!
Role Overview 🚀
We’re hiring a Senior Backend Engineer to join our Enablement squad and play a key role in building and modernising shared services across OneHub. This squad focuses on core services like admin tooling, imports, identity, roles, and other foundational elements critical to the OneHub ecosystem. If you're passionate about crafting scalable, reliable Java solutions and enjoy working collaboratively to drive innovation, this role is for you.
Tech Stack: Java, Spring Boot, MongoDB Atlas, Docker, Kubernetes, GCP, Event Driven Architecture, REST API's, Backstage.io.
Responsibilities 🤘
- Lead the design and development of scalable backend services using Java Spring Boot to power shared services across the OneHub platform.
- Collaborate with Product Managers, Engineers, and cross-functional teams to define requirements and deliver high-quality solutions.
- Build and modernise core services such as identity management, roles, admin tooling, and import processes.
- Implement and maintain microservices architecture, leveraging tools like Kubernetes for containerisation and deployment.
- Optimise system performance through best practices, including the use of event-driven architecture and messaging systems like Google Cloud Pub/Sub.
- Advocate for and implement technical best practices, ensuring maintainability, security, and performance.
- Contribute to our learning culture by sharing knowledge and mentoring less experienced engineers.
What are we looking for? 🔎
- Extensive experience in backend development with Java and Spring Boot, with a strong focus on building RESTful APIs.
- Experience with microservices architectures and containerisation using Kubernetes and Docker.
- Strong understanding of event-driven architecture and messaging systems like Pub/Sub.
- Solid knowledge of database technologies, including MongoDB or other NoSQL solutions, and their integration with Java applications.
- Hands-on experience working with CI/CD pipelines (e.g., CircleCI) for automated deployment and delivery.
- Collaboration: Ability to work effectively with cross-functional teams, sharing knowledge and building strong working relationships.
- Proactive Problem-Solving: A resourceful approach to identifying challenges and implementing effective solutions with minimal guidance.
- Commitment to Excellence: Passion for clean code, technical best practices, and continuously improving system reliability and performance.
Bonus Points:
- Experience with cloud technologies, particularly GCP or similar environments.
- Knowledge of infrastructure as code (IaC) tools, such as Terraform.
- Familiarity with authentication and identity solutions like Okta.
- Interest or experience in learning Golang for broader platform contributions.
- Exposure to frontend technologies such as React or TypeScript.
Even if you don't meet all of the requirements for this role, we encourage you to apply! We are looking for talented and passionate individuals who are eager to learn and grow. We also offer a variety of other roles, so please check out our careers page to see if there is something else that might be a good fit for you.
Our interview process
Benifex understand the need to have a fast and efficient process, the below will all be completed in the shortest time possible, typically a 2-2.5 week timeframe.
📞 Initial informal call with the Talent team
⏳ Interview with our Engineering Director 30-45 min
🧪 Technical Task
🔎 Technical Interview - 60 min
🤩 Final interview with VP of Engineering - 30-45 min
We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, colour, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.
We are committed to creating a diverse and inclusive workplace where everyone feels welcome and respected. We believe that diversity and inclusion are essential to our success, and we are proud to be an equal opportunity employer.
We are a proud member of the Disability Confident employer scheme.
If you require any reasonable adjustments at any stage during the recruitment process, please let us know with your application.

- Department
- Product Engineering
- Locations
- Southampton
- Remote status
- Hybrid
- Yearly salary
- £75,000 - £90,000

Senior Backend Engineer (Java)
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