Senior Scala Software Engineer

About One Doc

One Doc is the leading healthcare platform in Switzerland. Today, more than 13,000 healthcare professionals and 3 million patients are using our services every day. You may even be one of them!

Our mission is simple: make interactions between health professionals and patients easier. To achieve this, we can count on a young and dynamic team of more than 80 people spread in five offices all around Switzerland.

We are looking for a Senior Scala Software Engineer who cares deeply about well‑designed backend systems that are scalable and built to last, and who takes pride in writing clean code. This is a role with real ownership: you will not just build features, you will help shape how our backend is designed, built, and evolved over time.

• Contract type:
  Permanent
• Employment type:
  
  Full‑time (100%)
• Location:
  
  Geneva / Lausanne
• Start date:
  
  As soon as possible
• Work model:
  Hybrid (3 days on‑site / 2 days remote)

You will design, implement, and evolve core backend services using Scala 3, focusing on performance, reliability, and long‑term maintainability.

You will write maintainable, well‑structured code and actively participate in code reviews. You will help make and document technical decisions, balancing long‑term codebase consistency with pragmatic delivery.

You will mentor other engineers, support their growth, and contribute to hiring the right colleagues. Your impact will go beyond your own code: you will help create an environment where engineers learn, improve, and enjoy doing great work together.

You will work closely with product managers, design and Top Management to break down complex problems, explore trade‑offs, and deliver solutions that are easy to reason about and operate in production.

You will stay up to date with Scala and backend engineering best practices, and you will help introduce new technology and processes that meaningfully improve reliability, developer experience, and productivity.

You will join a high‑caliber, passionate engineering team that values collaboration, ownership, and shipping meaningful work. We move fast, support each other, and genuinely enjoy solving hard problems together.

You can be our next Senior Scala Software Engineer if:

• You have Master’s degree in Computer Science or equivalent
• You have at least 4 years of experience in software engineering
• You are fluent in Scala
• You have a solid experience building RESTful APIs
• You have strong knowledge in relational databases along with their underlying concepts (transactions, indexes, etc.) and you master SQL
• You have experience using frameworks for unit and integration testing
• You have working proficiency in English

• You are proficient with CI tools
• You speak French and/or German is a plus
• You are committed to clean code and development best practices

• We feel that you bring excellent problem‑solving skills and proactive attitude: you quickly identify issues and come up with relevant solutions
• You show great interpersonal skills and are able to collaborate effectively with diverse teams

This position is based out of Geneva or Lausanne, Switzerland, and only applicants with a valid work permit will be considered.

We care deeply about offering a transparent, respectful, and human hiring experience. Here’s what you can expect:

A first conversation to get to know you, your background, and your past achievements, and to see how your experience aligns with our needs.

A deeper technical exchange to discuss your experience, approach to problem‑solving, and the kinds of systems you enjoy working on.

You will receive a coding exercise to work on at home, at your own pace. You will then be invited to our office to present and discuss your…