Senior Backend Engineer (Java/Kotlin)- (m/f/x)

Location: Berlin, Berlin, Germany

Department: Engineering

Set a new pulse for healthcare!

What you'll do

• Collaborate with product managers, designers, and engineers to design and ship features that deliver real value to healthcare professionals and patients
• Design and implement robust technical solutions ensuring performance, security, and usability across our back-end applications
• Contribute to technical decisions and architectural choices — not just implementation — helping shape the long-term direction of the platform
• Navigate integration complexity across a broad and diverse partner ecosystem, balancing delivery speed, reliability, and maintainability
• Champion AI-assisted development workflows and help elevate your team's proficiency with these tools
• Share your expertise across teams to evolve Doctolib's architecture and technical standards through knowledge sharing, code reviews, and pair programming

Who you are

• Have strong back-end software engineering experience with the JVM ecosystem (Java, Kotlin, Spring Boot)
• Have hands-on experience using AI-assisted coding tools and are comfortable integrating them into your daily workflow
• Have significant experience navigating integration complexity across large partner networks and diverse legacy systems
• Have a "user first" mindset and are committed to building secure, well-tested, and pragmatic code — you bring a strong testing culture and care deeply about code quality and system resiliency
• Are proactive, curious, and eager to grow alongside your teammates through pair programming and cross-team collaboration
• Are fluent in English

• Have experience with Ruby on Rails
• Have contributed to large-scale platform architecture discussions or technical roadmap planning

Life at Doctolib Tech

• 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.
• Our 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.

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)
• The Doctolib Parent Care program, which includes one month additional parental leave and much more
• Enrollment in Doctolib's long-term employee value sharing plan called DoctoGrowth
• 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
• Relocation support in case of international mobility
• Access to the best AI tools for coding, development and dedicated training

Our interview process

• Recruiter Interview
• Coding Interview
• System Design Interview
• Final Interview
• At least one reference check

Job details

• Permanent position
• Tech stack: React, Java, Kotlin, Ruby on Rails
• Full-time
• Berlin, Germany
• Hybrid work setup (up to 2 remote days per week)
• Start date: as soon as possible

We welcome everyone

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