--- title: 'Senior Software Engineer FullStack Kotlin / React - Berlin (f/m/d) at Doctolib' canonical: 'https://feeny.ai/job/senior-software-engineer-fullstack-kotlin-react-berlin-f-m-d-doctolib-berlin-s1p32hjqdbx6' type: 'job' last_seen: '2026-10-16' --- # Senior Software Engineer FullStack Kotlin / React - Berlin (f/m/d) at Doctolib - **Company:** [Doctolib](https://feeny.ai/companies/doctolib) - **Location:** Berlin, Germany - **Employment:** contract - **Work type:** hybrid - **Posted:** 2026-07-06 - **Last confirmed live:** 2026-10-16 - **Apply:** https://jobs.ashbyhq.com/doctolib/b74850a3-cf80-4583-b00a-69bd9344978e ## Job description ## 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](https://careers.doctolib.com/ai-careers/)! ## 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 - Total Cash Compensation: min 65K - max 95K (including 10% performance-based bonus) I f you would like to find out more about tech life at Doctolib, feel free to read our latest [Medium blog articles](https://medium.com/doctolib)! 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, 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! All information provided is processed by Doctolib for application management. For data processing details, click [here](https://doctolib.legal/B2C-Privacy-Policy-Career-DE). Please contact hr.dataprivacy(at)doctolib.com for inquiries or to exercise your rights. ## About Doctolib ## Company Overview - **One-liner**: Doctolib builds digital healthcare solutions for health professionals and patients, including appointment booking, telemedicine, EHR, and AI-powered clinical assistants. - **Entity Type**: Private (Series E; $816M total funding) - **Headquarters**: Levallois‑Perret, France - **Founded**: 2013 - **Founders**: Not publicly listed (the company was founded by a team including Stanislas Niox‑Chateau, but the profile attributes it to a founding group; official sources do not emphasise individual founder names – likely Roman Schué, Stanislas Niox‑Chateau, and others) ## Core Business - **Primary industry**: Healthcare Technology / Healthtech - **Target customers**: B2B (healthcare professionals, hospitals, clinics) and B2C (patients); primary markets in France, Germany, Italy, and the Netherlands - **Mission/purpose**: “Build together the healthcare we all dream of” – a purpose‑driven company (société à mission) with seven social objectives including improving care teams’ quality of life, facilitating access to care, and developing prevention. ## Products & Services - **Appointment Booking & Calendar Management**: 24/7 online booking, waitlist, reminders, delays, and calendar optimisation. Used by 420,000+ health professionals and 90M+ patients. - **Clinical & Financial Suite (EHR)**: Electronic health records, document management, secure messaging, prescribing, billing engine, and insurance processing. Includes “Doctolib Médecin” for GPs and “Doctolib Kiné” for physiotherapists. - **AI Assistants**: - *AI Consultation Assistant*: Real‑time structured transcription and documentation (supported 5M consultations). - *AI Phone Assistant*: Handles booking and patient messaging 24/7. - *AI Health Assistant* (in Health Companion): Answers health questions, provides coaching, and guides care journeys. - **Health Companion**: Patient app for prevention campaigns, early detection, personalised guidance, video consultations, and care‑journey tracking. - **Practice Efficiency & Patient Acquisition**: Tools for patient base management, recalls/notifications, practice analytics, CRM integrations, and marketing visibility. - **Cooperative Care (Siilo)**: Secure messaging, case management, and referral platform enabling care coordination across professionals (merger with Siilo in 2023). - **Financial Solutions**: Simplifies complex billing and insurance workflows for healthcare professionals. - **Tailor‑made Service & Advisory**: Custom support and advisory for healthcare institutions. ## Market Standing - **Valuation/Market Cap**: Not publicly disclosed (private company; total funding $816M) - **Key Metric**: Annual Revenue ~€257.6M (most recent available). Total funding $816M (Series E of $170.3M led by General Atlantic in March 2019, with prior rounds from Accel, Eurazeo, Bpifrance, etc.) - **Notable Investors/Partners**: General Atlantic, Accel, Eurazeo, Bpifrance, and others. Partners include public hospitals (AP‑HP) and the French government (vaccination campaign support). - **Growth Signals**: - 90M+ patients and 420,000+ health professionals across Europe. - 2,900+ employees (up from 2,618 reported earlier). - Tech & Product team of 900+ engineers. - 15M online appointments booked per month in France alone, half outside office hours. - B Corp certification (goal achieved by 2024). - Expansion into Italy (2021) and Netherlands (via Siilo merger 2023). - AI adoption: AI Consultation Assistant supporting 5M consultations. ## Competitive Advantages - **Deep Healthcare Specialisation**: Over a decade of domain expertise; solutions meet highest clinical standards (ISO 27001, HDS certified). - **Localised Approach**: Products adapted to each country’s regulations, languages, and specialties while maintaining a unified platform. - **Ecosystem Lock‑in**: Integrated suite covering scheduling, EHR, billing, telemedicine, AI, and care coordination – creating a one‑stop shop for professionals. - **Scale & Network Effects**: Large patient base (80–90M) drives adoption by professionals, which in turn attracts more patients. - **AI‑First Innovation**: Research lab partnered with top tech and clinical institutions; deploying AI for documentation, decision support, and patient engagement. - **Purpose & Trust**: Certified B Corp and French “société à mission” with annual independent audits, reinforcing trust with users and regulators. ## Strategic Focus - **AI‐Powered Efficiency**: Scaling AI assistants to reduce administrative burden (targeting 4.5 hours saved per week per GP). - **International Expansion**: Deepening footprint in Germany, Italy, and the Netherlands while maintaining leadership in France. - **Real‑World Impact**: Focus on prevention, early detection, and continuous care (Health Companion). - **Platform Consolidation**: Integrating care cooperation (Siilo) and financial solutions to create a seamless end‑to‑end experience. - **Talent & Culture**: Growing tech team, investing in AI research, and reinforcing mission‑driven culture to attract top engineering and product talent. ## Why Work Here - **Purpose & Mission**: B Corp certified, purpose‑driven company with a clear social impact (improving healthcare access and quality of life for care teams). - **Tech Scale & Challenge**: Build platform used by millions, work with 900+ tech peers on cloud‑native (AWS), mobile, AI, and security at scale. - **Learning & Development**: Doctolib Academy for onboarding; continuous training in AI tools, soft skills, and leadership; transparent internal mobility. - **Benefits**: - Health insurance 100% paid for you and children. - 25 vacation days + up to 14 RTT days/year. - Parent Care Program: one additional month of leave beyond legal parental leave. - Free mental health coaching via Moka.care. - Gym (on‑site in Paris) with group classes. - Flexible workplace: hybrid or office‑based; work from EU/UK up to 10 days/year. - Subsidised sports/creative class membership. - Lunch vouchers (Swile card). - Solidarity Days (2 days/year for health charities). - **Work Environment**: Transparent internal mobility, support for new managers, diversity & inclusion initiatives, and a strong emphasis on collaboration with healthcare professionals. - **Locations**: Paris, Nantes, Berlin, Milan, Amsterdam, and other EU cities. ## Sources 1. [careers.doctolib.com](https://careers.doctolib.com/) – Careers page with benefits, culture, and product descriptions. 2. [linkedin.com/company/doctolib](https://www.linkedin.com/company/doctolib) – Company details, financials, workforce, and reviews. 3. [careers.doctolib.com/tech-doctolib/](https://careers.doctolib.com/tech-doctolib/) – Tech team overview, AI and product details. 4. [media.doctolib.com](https://media.doctolib.com/image/upload/mkg/file/impact_report_en_digital.pdf) – 2024 Impact Report with detailed mission, impact metrics, and business model. ## Other roles at Doctolib - [Responsable Partenaires Ecosystème Santé (x/f/m)](https://feeny.ai/job/responsable-partenaires-ecosysteme-sante-x-f-m-doctolib-paris-8ydj9rs3ybqc) — Paris, France - [Praktikum/Werkstudent:in Partnership Management (x/f/m)](https://feeny.ai/job/praktikum-werkstudent-in-partnership-management-x-f-m-doctolib-munchen-2srwp7ed20cv) — München, Germany - [Praktikum/Werkstudent:in Partnership Management (x/f/m)](https://feeny.ai/job/praktikum-werkstudent-in-partnership-management-x-f-m-doctolib-hamburg-wz07knq7h32t) — Hamburg, Germany - [Praktikum/Werkstudent:in Partnership Management (x/f/m)](https://feeny.ai/job/praktikum-werkstudent-in-partnership-management-x-f-m-doctolib-berlin-nsjp39903dz4) — Berlin, Germany - [Praktikum Public Affairs & Advocacy (x/f/m)](https://feeny.ai/job/praktikum-public-affairs-advocacy-x-f-m-doctolib-berlin-091ya8dcjtrh) — Berlin, Germany - [Team Manager Account Management (x/f/m)](https://feeny.ai/job/team-manager-account-management-x-f-m-doctolib-berlin-619t462evhfn) — Berlin, Germany - [Software Engineer Intern - Fullstack (x/f/m) - Berlin - March 2027](https://feeny.ai/job/software-engineer-intern-fullstack-x-f-m-berlin-march-2027-doctolib-berlin-8xhe2292w0p1) — Berlin, Germany - [Software Engineer Intern - Fullstack (x/f/m) - Amsterdam](https://feeny.ai/job/software-engineer-intern-fullstack-x-f-m-amsterdam-doctolib-amsterdam-f0zy604jsz1t) — Amsterdam, Netherlands - [Software Engineer Intern - Fullstack (x/f/m) - Milano](https://feeny.ai/job/software-engineer-intern-fullstack-x-f-m-milano-doctolib-milan-2vy0jxsyw48t) — Milan, Italy - [Software Engineering Intern - Fullstack (x/f/m) - Niort](https://feeny.ai/job/software-engineering-intern-fullstack-x-f-m-niort-doctolib-niort-maphfen14t6g) — Niort, France