Senior Software Engineer FullStack Kotlin / React – Berlin (f/m/d)

What we do

Join a team of passionate and hardworking entrepreneurs to transform healthcare!

Working in the tech team at Doctolib involves building innovative products and features to improve the daily lives of care teams and patients. We work in feature teams in an agile environment, while collaborating with product, design, and business teams.

What you’ll do

We are looking for a Senior Software Engineer FullStack to join the FIRE (FHIR & Interoperability Requirements EHR) team in the Clinical domain.

As a Senior Software Engineer, your mission will be to ensure that Doctolib DE is well connected to the German digital health ecosystem and compliant with FHIR standards. You will be responsible for the interoperability of the German EHR (Electronic Health Record): connection to the Telematik-Infrastruktur (TI), electronic prescriptions (eRezept), qualified electronic signature (QES), connected medical devices (GDT), and integration of laboratory results.

Your responsibilities include but are not limited to:

• Build and maintain the integration with German governmental health services, ensuring other Doctolib teams can seamlessly interact with the German health system through your platform
• Drive the integration of the national EHR (Electronic Health Record) into Doctolib, with a multi-country rollout approach, navigating each country’s standards and technical constraints
• Design, ship, and operate production-grade fullstack solutions that connect the Doctolib platform to complex healthcare infrastructure
• Partner with other engineering teams to shape the architecture of Doctolib’s interoperability platform
• Ensure privacy, security, and compliance by design in one of healthcare’s most regulated technical environments
• Own performance, observability, and reliability: monitoring dashboards, SLO/SLI, and system health
• Contribute to cross-functional initiatives that shape Doctolib’s future interoperability strategy across Europe

About our tech environment

• Our solutions are built on a single, fully cloud-native platform that supports web and mobile app interfaces, multiple languages, and is adapted to country and healthcare specialty requirements.
• The FIRE team works on a FullStack scope: React / TypeScript on the frontend and Kotlin on the backend.
• Our broader stack is composed of Rails, TypeScript, Java, Python, Kotlin, Swift, and React Native.
• We leverage AI ethically across our products to empower patients and health professionals. Discover our AI vision here!

Who you are

Are you convinced that you have exactly what it takes for the position? Then we encourage you to apply. Even if you don’t meet every requirement, you might be exactly the right future Doctoliber for this or other positions!

Before you read on, if you don’t have the exact profile described below, but you feel this job description matches your skill set, we still encourage you to apply.

• You have 6+ years of experience as a software engineer, with strong fullstack expertise, particularly in Kotlin and React/TypeScript
• You have a track record of building robust, end-to-end solutions that balance technical excellence with intuitive user experiences
• You are able to design systems (system design) and make sound architectural decisions in complex environments
• You understand and promote best practices related to the software development life cycle: automated testing, CI/CD, and DevOps practices (you build it, you run it)
• You are curious, autonomous, and have a taste for exploring new systems: you are comfortable solving problems without complete documentation
• You are at ease in complex technical environments with many external dependencies and evolving standards
• You are eager to share your knowledge and help the team grow through pair programming and mentoring
• You are comfortable speaking and writing in English in your day-to-day with the team, German is a plus

Now, it would be fantastic if you:

• Have experience with healthcare interoperability standards, particularly FHIR, HL7, or similar
• Have experience integrating with governmental or regulated health systems (e.g. Telematik-Infrastruktur, eRezept, GDT)
• Are familiar with the German digital health ecosystem

What we offer

• A Deutschlandticket (Germany-wide public transport pass) fully paid for by Doctolib
• 28 vacation days + 1 additional day for each full calendar year of employment (up to a maximum of 30 days)
• Work from abroad for up to 10 days per year thanks to our flexibility days policy
• Company health insurance with great supplementary benefits through our partner Allianz
• Company pension scheme (bAV) through Allianz with an employer subsidy of 40% (15% within the probationary period)
• Enrollment in Doctolib’s long-term employee value sharing plan called DoctoGrowth
• The Doctolib Parent Care program, which includes one month additional parental leave and much more
• Free mental health and coaching services through our partner Moka.care
• Subsidized sports membership through our partner Urban Sports Club
• A flexible workplace policy offering both hybrid and office-based mode
• Alongside healthy snacks and our regular breakfast buffet, we provide a subsidized meal benefit
• For caregivers and workers with disabilities, a package including an adaptation of the remote policy, extra days off for medical reasons, and psychological support

The interview process

• Recruiter Interview
• Feature Building Interview
• System Design Interview
• Behavioral Interview
• Reference check
• Offer!

Job details

• Full-time
• Location: Berlin
• Working mode: Hybrid
• Start date: as soon as possible