Senior Java/Kotlin Developer

Senior Site Reliability Engineer - Observability (x/f/m)

Doctolib

YOUR IMPACT We are looking for a Senior Site Reliability Engineer to join the Core Reliability & Observability team in Platform Engineering. Your mission will be to shape Doctolib's observability strategy and ensure our platform remains reliable, debuggable, and scalable at a European scale. You will work in a feature team developing logging, metrics, tracing, and alerting capabilities, contributing directly to supporting 400,000 health professionals and 80 million patients in their daily healthcare journey. 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: * Lead the observability strategy across the platform, with an emphasis on building scalable, developer-friendly logging and tracing capabilities * Identify and lead large-scale cross-cutting reliability initiatives, including improvements to our incident detection, response, and postmortem analysis capabilities * Take part in the on-call rotation, and actively contribute to improving our on-call experience by refining alerting, reducing noise, and ensuring actionable telemetry 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 a solid hands-on experience (3y+) on a large-scale production platform * Have proven experience with cloud platforms such as AWS, Azure or Google Cloud * Have solid understanding of containerization and orchestration technologies (Docker and Kubernetes) * Have a strong understanding of Helm for managing Kubernetes manifests and ArgoCD for GitOps workflows * Have deep expertise in observability tooling and architecture, such as: * Logging: Fluent Bit, OpenTelemetry, Loki, Elasticsearch, Logstash, Vector * Tracing: OpenTelemetry or proprietary APMs * Metrics: Prometheus, Thanos, Datadog, or equivalent * Have proficiency in at least one programming language (Ruby, Python, Go, Java, etc.) and a deep understanding of infrastructure as code principles * Have experience with monitoring and observability tools * Like troubleshooting performance issues in complex environments * Are fluent in English It would be fantastic if you: * Have experience contributing to open-source observability projects * Have worked in a high-growth tech environment * Are passionate about developer experience and platform engineering 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 * Free comprehensive health insurance (basic package) for you and your children * 25 days of paid vacation per year, plus up to 14 days of RTT * Free mental health and coaching services through our partner Moka.care * Work from abroad for up to 10 days per year thanks to our flexibility days policy * Lunch vouchers (Swile card) worth €8.50 per working day, with €4.50 covered by Doctolib * A subsidy from the work council to refund part of the membership to a sport club or a creative class * 50% reimbursement of your public transport subscription * ParentCare Program: Enjoy full salary coverage (100%) during your first month of birth leave, and 75% during the second, covered by Doctolib * Enrollment in Doctolib's long-term employee value sharing plan called DoctoGrowth * 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 * Technical SRE 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. JOB DETAILS * Permanent position * Tech stack: Kubernetes, Prometheus, OpenTelemetry, Loki, ArgoCD, Ruby, Python, Go * Full-time * Paris, France * 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 l France l Italy l Netherlands. Please contact hr.dataprivacy(at)doctolib.com for inquiries or to exercise your rights.

Senior Machine Learning Engineer - Orchestration - Applied AI & LLMs (x/f/m)

Doctolib

SET A NEW PULSE FOR HEALTHCARE! We are looking for a Senior Machine Learning Engineer to join the Orchestration team in AI Health Assistant. Your mission will be to ensure our AI Health Companion behaves safely, reliably, and helpfully — for millions of patients and practitioners. You will work in a cross-functional team building robust evaluation pipelines for agentic AI systems, contributing directly to improving the quality and safety of AI-powered healthcare. 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: * Define and own the evaluation strategy for our AI agentic system — metrics, protocols, datasets, and tooling * Implement and maintain automated evaluation pipelines to monitor model quality, safety, and alignment across iterations * Run systematic experiments to assess reasoning, factuality, robustness, and user experience * Collaborate closely with model developers and research scientists to provide insights and drive iterative improvement * Contribute to research and internal knowledge sharing on LLM evaluation methodologies and best practices 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. 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: * Hold an MSc or PhD in Computer Science, Machine Learning, Data Science, or a related field * Have 7+ years of hands-on experience working with large language models (e.g., GPT, Claude, Llama, or BERT-like architectures) * Have proven experience evaluating agentic or reasoning systems (e.g., autonomous agents, tool-using LLMs, dialogue systems, or task-oriented assistants) * Have a strong track record in experiment design, metric definition, and evaluation automation * Are able to bridge research and production, influencing both modeling and product decisions * Have excellent communication skills, a collaborative mindset, and are fluent in English It would be fantastic if you: * Have experience in the clinical or medical domain and sensitivity to ethical or regulatory challenges in healthcare AI WHAT WE OFFER * Free comprehensive health insurance (basic package) for you and your children * 25 days of paid vacation per year, plus up to 14 days of RTT * Free mental health and coaching services through our partner Moka.care * Work from abroad for up to 10 days per year thanks to our flexibility days policy * Lunch vouchers (Swile card) worth €8.50 per working day, with €4.50 covered by Doctolib * A subsidy from the work council to refund part of the membership to a sport club or a creative class * 50% reimbursement of your public transport subscription * ParentCare Program: Enjoy full salary coverage (100%) during your first month of birth leave, and 75% during the second, covered by Doctolib * Enrollment in Doctolib's long-term employee value sharing plan called DoctoGrowth * 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 * Technical Deep Dive * Data System Design * 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. JOB DETAILS * Permanent position * Full-time * Hybrid in our Levallois-Perret office (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: France. Please contact hr.dataprivacy(at)doctolib.com for inquiries or to exercise your rights.

Engineering Manager - Observability & Reliability Engineering Obsession (x/f/m)

Doctolib

We are looking for an Engineering Manager to join the OREO (Observability Reliability Engineering Obsession) team in Platform Engineering. As an Engineering Manager, your mission will be to lead the Reliability & Observability team and drive the evolution of Doctolib's observability platform, supporting the exponential growth of Doctolib services while building and empowering a world-class SRE team. 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. You will lead a team of Site Reliability Engineers who are responsible for shaping Doctolib's observability strategy and ensuring our platform remains reliable, debuggable, and scalable. This role sits at the intersection of people management, technical leadership, and strategic planning with a particular focus on building organizational capabilities around logging, metrics, tracing, and alerting. Your team also owns and operates critical transversal services that enable secure, scalable infrastructure management across the organization, including HashiCorp Vault for secrets management and Terraform Enterprise for infrastructure as code. Your responsibilities include but are not limited to:   People Leadership: * Lead, coach, and grow a team of Site Reliability Engineers, supporting their technical development and career progression * Create a culture of operational excellence, continuous improvement, and psychological safety within the team * Conduct regular 1:1s, performance reviews, and career development conversations * Recruit, onboard, and retain top SRE talent aligned with Doctolib's mission and values Technical Strategy: * Partner with SREs and senior engineers to define and evolve the observability strategy across the platform, focusing on logging, metrics, tracing, and alerting * Own the strategy and evolution of critical transversal services including HashiCorp Vault and Terraform Enterprise * Drive prioritization and roadmap planning for large-scale reliability and observability initiatives * Ensure alignment between team objectives and broader engineering and business goals * Advocate for and allocate resources toward reducing technical debt and improving developer experience Operational Excellence: * Own the team's on-call experience and contribute to the incident response processes, ensuring sustainable practices and continuous improvement * Ensure high availability and reliability of transversal services that are critical to the entire engineering organization * Lead postmortem reviews and drive systemic improvements to prevent recurring issues Cross-functional Collaboration: * Work closely with Product Managers, Engineering Managers, and architects to align observability capabilities with product and platform needs * Partner with security and infrastructure teams to evolve secrets management and IaC practices across the organization * Represent the OREO team in engineering leadership forums, architectural reviews, and strategic planning sessions * Foster strong partnerships with software engineering teams to improve instrumentation quality and adoption of observability best practices 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 the country and healthcare specialty requirements. To address these challenges, we are modularizing our platform run in a distributed architecture through reusable components. * 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 and learn about our first AI hackathon here! 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 have at least 5+ years of software engineering or SRE experience, with a strong technical background in cloud-native environments (preferably AWS, GCP, and/or Kubernetes-based) * You have 3+ years of engineering management experience, leading technical teams (ideally SRE, platform, or infrastructure teams) * You have deep understanding of observability tooling and architecture (Fluent Bit, OpenTelemetry, Loki, Elasticsearch, Prometheus, Thanos, Datadog) * You have experience with infrastructure as code (Terraform, OpenTofu) and secrets management systems (Vault, AWS Secrets Manager) * You have proven ability to balance technical depth with people leadership, able to mentor engineers, review technical designs, and guide architectural decisions Now it would be fantastic if you: * Have experience scaling SRE or platform teams in fast-growing, high-traffic environments * Have background in designing and operating high-scale telemetry pipelines * Have hands-on experience with HashiCorp Vault and Terraform Enterprise in production environments * Have hands-on experience with backend programming languages (e.g., Go, Python, Ruby) * Have experience driving cultural and technical transformations WHAT WE OFFER * Free comprehensive health insurance for you and your children * ParentCare Program: Enjoy full salary coverage (100%) during your first month of birth leave, and 75% during the second, covered by Doctolib * Free mental health and coaching services through our partner Moka.care * For caregivers and workers with disabilities, a package including an adaptation of the remote policy, extra days off for medical reasons, and psychological support * Work from EU countries and the UK for up to 10 days per year, thanks to our flexibility days policy * Work Council subsidy to refund part of sport club membership or creative class * Up to 14 days of RTT * A subsidy from the work council to refund part of the membership to a sport club or a creative class * Lunch voucher with Swile card THE INTERVIEW PROCESS * 30-min phone screen with a Tech Recruiter * 1h30 technical interview (SRE System Design & Architecture) * 1h15 behavioral interview (Leadership & People Management) * 1h30 Engineering Management case study (team scenarios, prioritization, and conflict resolution) * 1h manager interview with Senior Engineering Leadership * At least one reference check JOB DETAILS * Permanent position * Full-time * Levallois-Perret, France * Start date: as soon as possible If you would like to find out more about tech life at Doctolib, feel free to read our latest Medium blog articles! 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. Please contact hr.dataprivacy(at)doctolib.com for inquiries or to exercise your rights.