---
title: 'Senior Software Engineer - Node.js/TypeScript (x/f/m) at Doctolib'
canonical: 'https://feeny.ai/job/senior-software-engineer-node-js-typescript-x-f-m-doctolib-berlin-rvrb3wgak3d4'
type: 'job'
last_seen: '2026-10-16'
---

# Senior Software Engineer - Node.js/TypeScript (x/f/m) at Doctolib

- **Company:** [Doctolib](https://feeny.ai/companies/doctolib)
- **Location:** Berlin, Germany
- **Employment:** contract
- **Work type:** hybrid
- **Posted:** 2026-09-11
- **Last confirmed live:** 2026-10-16
- **Apply:** https://jobs.ashbyhq.com/doctolib/d14d9aa8-39b0-466d-a7db-44ee38ef7b77

## Job description

Set a new pulse for healthcare! We are looking for a Senior Software Engineer to join the DIAL team in the Phone Assistant domain. Your mission will be to design, build, and scale the AI-powered features that transform how practitioners and patients connect over the phone — making care more accessible for patients and reducing administrative burden for health professionals. You will work in a feature team developing the Phone Assistant, Doctolib's solution that combines LLM reasoning, speech recognition, and real-time backend systems, launching first in Germany and expanding to France and Italy. 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:

- Build and operate backend services in Node.js/TypeScript (with Python exposure), designing for reliability, scalability, and real-time performance
- Design, evaluate, and ship LLM-based features end-to-end: prompt engineering, tool calling, structured outputs, guardrails, and fallback strategies
- Own AI feature quality: build evaluation datasets and scorers (e.g., in Braintrust), track regressions, and make evidence-based ship decisions before each release
- Deploy and operate cloud-native services on Kubernetes across major cloud providers (AWS/Azure/GCP), and evolve CI/CD pipelines with GitHub Actions
- Design data models and drive database migrations and performance tuning for real-time workloads (PostgreSQL: connection pooling, indexing, query optimisation)
- Maintain a high testing bar (unit, integration, e2e), debug distributed systems in production with strong observability, and contribute to pragmatic, secure architecture decisions

## 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 5+ years of backend engineering experience building scalable, resilient systems in Node.js/TypeScript (with some Python)
- Have hands-on production experience building LLM-based features: prompting, tool calling, structured outputs, eval frameworks, and handling real-world failure modes
- Have proven experience deploying and operating services on Kubernetes within at least one major cloud provider (AWS, Azure, or GCP), with solid CI/CD practices
- Have a strong testing culture (unit/integration/e2e), sharp debugging skills for microservices and distributed systems, and a focus on code quality
- Are fluent in English, with a collaborative mindset and the drive to own problems end-to-end — from design to production

It would be fantastic if you:

- Have experience with speech pipelines (ASR, TTS, streaming audio) or voice agents
- Are familiar with event-driven architectures and message brokers (Kafka, RabbitMQ, NATS, or Redis Streams), and have hands-on PostgreSQL experience (EXPLAIN/ANALYZE, indexing strategies, connection pooling)
- Have an interest in telephony and real-time communication (SIP, RTP, WebRTC) — no prior experience needed, we will teach you

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](https://careers.doctolib.com/ai-careers/).

Want to learn more about our tech culture and environment? Visit the[Doctolib Tech site](https://careers.doctolib.com/tech-doctolib/).

## 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
- Live Coding Interview
- System Design Interview
- Behavioral 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](https://careers.doctolib.com/tech-doctolib/getting-hired/). Job details

- Permanent position
- Tech stack: Node.js/TypeScript, Python, Kubernetes, AWS/Azure/GCP, PostgreSQL
- Full-time
- Berlin
- 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:[Germany](https://doctolib.legal/B2C-Privacy-Policy-Career-DE) |[France](https://doctolib.legal/B2C-Privacy-Policy-Career-FR) |[Italy](https://doctolib.legal/B2C-Privacy-Policy-Career-IT) |[Netherlands](https://doctolib.legal/B2C-Privacy-Policy-Career-COM). 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.

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