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

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 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 - 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 sha