Backend
Company listingDoctolib
Senior Backend Engineer (Java/Kotlin)- (m/f/x)
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Berlin, Berlin
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We are looking for a Senior Back End Software Engineer to join the Business Performance team at Doctolib.
Your mission will be to help reinforce Doctolib's position as a leading healthcare technology platform by building high-quality products that improve the daily lives of healthcare professionals and patients. You will work in a feature team developing solutions that directly impact millions of people across Europe.
Working in the tech team at Doctolib means building innovative products and features to improve the daily lives of care teams and patients.
What you'll do
Your responsibilities include but are not limited to:
- 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
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'll be a great fit if you:
- 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
It would be fantastic if you:
- 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.
Want to learn more about our tech culture and environment? Visit the Doctolib Tech site.
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
We want your experience to be clear, respectful, and transparent. Learn more about our hiring process on our candidate experience page.
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
At Doctolib, we are committed to improving access to healthcare for everyone. This translates into our recruitment process. We evaluate candidates based solely on qualifications and motivation, without any form of discrimination.
The more diverse ideas are heard, the more our product will truly improve healthcare for all. You are welcome to apply to Doctolib, regardless of your gender, religion, age, sexual orientation, ethnicity, or disability.
To ensure equal opportunities, we invite you to exclude personal information (e.g., pictures, age) from your applications. If you require any accommodation, please let us know for support during the hiring process.
Join us in building the healthcare we all dream of!
Your data privacy
All information provided is processed by Doctolib for application management. For data processing details, click here. Please contact hr.dataprivacy(at)doctolib.com for inquiries or to exercise your rights.
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