Senior Backend Engineer

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

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• 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

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• 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)