Summary: Seeking a talented Senior Backend Engineer to design, develop, and maintain robust, scalable, and secure backend systems for a life-changing medical product within a microservices architecture using Java, Spring, and AWS. Highlights: 1. Contribute to the evolution of a core platform with real-world impact 2. Design and implement backend features from concept to deployment 3. Collaborate in a fast-paced, mission-driven environment **About Hilo by Aktiia** High blood pressure is the world’s most common disease, causing 18M deaths each year. At **Hilo by Aktiia**, our vision is a world where no lives are lost or damaged from the effects of high blood pressure. Our mission is to make this a reality by developing tech to help people control their blood pressure. We are a venture\-backed scale\-up company, having raised over $96M from investors in Europe and the United States. Our technology \- rooted in 18 years of research at the Swiss Center for Electronics and Microtechnology (CSEM) \- is the world’s only medically accurate, continuous blood pressure monitor that is cuffless in daily life in the consumer space. Validated through extensive clinical trials and CE Marked as a Class IIa medical device, our solution is now available in 12 countries. We are a hybrid/remote\-first company, with Headquarters in Neuchâtel, Switzerland, united by our passion for impact and innovation. **Role Overview** We are seeking a talented and experienced Senior Backend Engineer to join our dynamic team. You will be a key contributor to the evolution of our core platform, responsible for designing, developing, and maintaining the robust, scalable, and secure backend systems that power our life\-changing product. This is a hands\-on role where you will take ownership of critical features, from architectural design to implementation, ensuring our services are built for performance, reliability, and compliance within a regulated medical device environment. You will work within a microservices architecture, leveraging your expertise in Java, Spring, and AWS to build solutions that handle complex data processing, real\-time communication, and seamless integration across our ecosystem. You will collaborate closely with frontend, mobile, and firmware engineers, as well as product managers, to translate product vision into high\-quality, efficient, and maintainable code. If you are passionate about building technology that has a real\-world impact and thrive in a collaborative, fast\-paced environment, this is the role for you. Our company offers a fully remote work model within Europe. However, this position requires the candidate to be **based in Europe** to ensure effective collaboration and alignment with our team and operational needs. **Core Responsibilities** **System Architecture \& Design** Contribute to the overall design and architecture of our backend, and participate in discussions with lead developers to build scalable and resilient microservices on AWS. **Code Quality \& Testing** Take ownership of your code quality by writing comprehensive unit and integration tests. Participate actively in code reviews to maintain high standards and ensure timely delivery. **Technical Ownership** Lead the design, implementation and deployment of backend features from concept to deployment, ensuring they meet both technical and product requirements. **Process \& Planning** Estimate development efforts, participate in sprint planning, and keep your work meticulously tracked to align with Hilo’s development process and regulatory standards. **Release \& Operations** Plan and support the release of backend services, ensuring smooth deployments and stable operations within our CI/CD pipeline. **Mentorship \& Collaboration** Provide technical guidance to other engineers, share your expertise, and foster a culture of technical excellence and continuous improvement. **Requirements** **Background \& Experience** * Bachelor’s or Master’s degree in Computer Science, Electrical Engineering, or a related field * 8\+ years of professional experience as a backend developer, with a proven track record of building and maintaining complex, scalable systems * Deep expertise in Java and/or Kotlin and the Spring Framework (Spring Boot, Spring Data, etc.) * Strong experience with relational (MySQL) and NoSQL (MongoDB) databases * Hands\-on experience with AWS cloud services (ECS, S3, SQS, RDS, etc.) and building cloud\-native applications * Familiarity with frontend technologies such as React or Angular is a nice\-to\-have * Experience working with containerization (Docker) and orchestration (Kubernetes) * Understanding of software development lifecycles in a regulated industry is a significant advantage; experience with medical device software (IEC 62304\) is a strong plus **Skills \& Ways of Working** * Excellent knowledge of software design patterns, data structures, and algorithms * Strong analytical skills and a process\-oriented work style with a structured, independent approach to problem\-solving * A focus on getting things done and a willingness to take ownership of outcomes * Comfortable working flexibly in an interdisciplinary and international environment * Strong communication skills and a collaborative, team\-first mindset **Languages \& Location** * Fluency in English is required * French or other European languages are a plus * This is a remote\-friendly role, open to candidates based in Europe **What success looks like** * You consistently deliver high\-quality, well\-tested, and maintainable code * The systems you build are reliable, scalable, and performant * You are a go\-to person for your area of expertise and a trusted technical partner for your team * You actively contribute to improving the team’s processes, architecture, and overall code quality **What this role is not** * Not a purely architectural or theoretical role; this is a hands\-on coding position * Not a people management role, though mentorship is expected * Not a siloed position; collaboration with other teams is essential **What makes you a great fit** At Hilo by Aktiia, our values guide everything we do: **Move the Needle** * You focus on delivering reliable, high\-impact code that directly benefits our users * You take ownership of your work from start to finish * You solve problems pragmatically and efficiently **Move Fast, Learn, Refine** * You are comfortable in a fast\-paced environment * You are able to iterate quickly, learn from feedback, and continuously improve systems **Team First** * You thrive in a collaborative environment * You communicate clearly and share knowledge * You support the team to achieve collective goals **Benefits** **Why Join Us?** * Hilo by Aktiia is becoming one of the most important med\-tech companies, and you can be part of this exciting story * Work on a mission that matters: transforming cardiovascular health at a global scale * Be part of a high\-impact, fast\-growing, and venture\-backed scale\-up company * Collaborate with a diverse, passionate, and talented team * Competitive compensation, equity program, and additional benefits (depending on location)