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 UK. We believe no one comes to work to do a bad job or be actively disengaged, and that technology is instrumental in providing an exceptional employee experience. We are striving to create seamless but tangible interactions between employers and employees, making work a rewarding place for every single one of us. 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? Impactful work: Make a real difference by ensuring the stability and performance of a platform used by millions. Work on integrations that enable our customers to have an exceptional experience on the OneHub platform. Challenging and dynamic environment: Continuously learn and grow while tackling complex technical problems. Specifically further your knowledge of APIs. Collaborative team: Work with a passionate and supportive team of engineers in the Philippines and the UK. 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 Benefex card will be topped up at the start of each month Role Overview We're looking for a Senior Backend Engineer to join our API Gateway team. Someone with expertise in designing and developing world-class integrations with enterprise HR systems such as Workday and SuccessFactors. If you are passionate about integrations, APIs, and understand the transformative power of robust system connections, this is a great opportunity for you to progress your career. Tech Stack : Java, Spring Boot, MongoDB Atlas, Docker, Kubernetes, GCP, Event Driven Architecture, REST API's, Backstage.io. Responsibilities Take a hands-on role and drive the design of our integration solutions, working closely with the Principal Engineer on architecture and technical direction. Guide and execute the development and implementation of integrations with Workday, SuccessFactors, and similar HR systems, providing technical oversight and mentorship to other engineers. Develop and optimise well-structured, scalable, and maintainable REST APIs using Java and Spring Boot, adhering to established industry-leading best practices. Collaborate with product teams, other engineers, and the Principal Backend Engineer to implement integration requirements. Produce comprehensive and clear API documentation (OpenAPI). Work closely with other Java engineers to help craft the correct design concepts for our integration solutions. Implement and maintain authentication and authorization mechanisms (OAuth, OpenID Connect) to ensure secure data exchange. What are we looking for? Extensive experience in building high-performance backend systems with Java Spring Boot. Proven experience or knowledge of Workday APIs and previous experience integrating with Workday or SuccessFactors is highly desirable. Solid experience with REST API design concepts and best practices. Ability to create and maintain comprehensive API documentation (OpenAPI) and other technical documentation. Experience in mentoring or leading a team, with the ability to motivate, guide, and foster technical growth in others. Hands-on experience working with CI/CD pipelines (CircleCI or similar) Collaboration : Ability to work effectively with cross-functional and remote teams, including Java Spring Boot engineers, to deliver cohesive solutions. Proactive Problem-Solving: A resourceful approach to tackling complex challenges and driving projects forward with minimal guidance. Technical Excellence: A strong advocate for clean code, best practices, and high-quality software development. Bonus Points: Demonstrable interest in exploring new technologies and a continuous improvement mindset. Experience with cloud technologies and concepts (GCP, or similar), especially in the context of deploying and scaling APIs. Practical experience with messaging systems (Google Cloud Pub/Sub, RabbitMQ, or similar) Experience with infrastructure as code (IaC) tools (Terraform). Experience with Okta or other identity management solutions. 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 Benefex 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.