Platform Security Engineer (x/f/m)

Doctolib; France; Sur place; EUR 55 000 - 90 000; Plein temps

Avantages offerts par ce poste

Health insurance for you and family

25 days vacation + RTT

Mental health support via Moka.care

Lunch vouchers (Swile)

Résumé du poste

Doctolib is seeking a Platform Security Engineer to protect healthcare data while enabling rapid innovation. You will secure cloud infra and application ecosystems across multi-cloud platforms.

You’ll work on IAM hardening, cluster policies, and CI/CD security, writing code with Terraform and GitHub PRs, and collaborating with engineering teams to raise the security bar across the Doctolib platform.

Qualifications

• 1–3 years hands-on security engineering, SRE, or platform engineering in production cloud environments.
• Familiarity with IaC and GitHub PRs; Kubernetes experience.
• Experience securing multi-cloud environments and IAM reviews.
• Experience with SIEMs (Elastic, Splunk) and incident response.
• Strong written communication and ability to drive cross-team adoption.

Responsabilités

• Own a platform security workstream from architecture to enforcement.
• Ship changes as code via Terraform and PR reviews; reversible changes.
• Harden cloud and infrastructure baseline; manage IAM, secrets, and guardrails.
• Lead end-to-end incident investigations and improve detection/playbooks.
• Document technical notes and drive adoption with engineering teams.

Connaissances

Platform security engineering

Terraform

Kubernetes

GitHub

Clouds (AWS/GCP/Azure)

Incident response

SIEM

Outils

Terraform

GitHub

Kubernetes

Elastic

Splunk

Description du poste

Set a new pulse for healthcare!

We are looking for a Platform Security Engineer to join the Security team at Doctolib.

Your mission will be to protect sensitive healthcare data while enabling rapid, secure innovation. You will be responsible for securing Doctolib's cloud infrastructure and application ecosystem, combining multi-cloud security expertise with hands-on platform engineering - contributing directly to the safety of millions of patients and care teams who rely on our platform every day.

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

• Own a platform security workstream end to end, from architecture to enforcement: scope it with your tech lead, design the control, roll it out progressively (report-only, then enforce), handle exceptions, and see it through to full coverage. Typical examples: hardening IAM across our AWS accounts, tightening cluster admission policies, or closing a class of misconfiguration for good.
• Ship every change as code: Terraform and GitHub pull requests, peer-reviewed and always reversible. No console clicking, no undocumented state.
• Harden our cloud and infrastructure baseline and keep it hardened: IAM permissions and access reviews, secrets management, network and cluster guardrails, CI/CD and supply chain controls - building the guardrails and driving remediation of what they surface with platform and engineering teams, turning recurring findings into automation rather than tickets.
• Investigate and improve: lead incident investigations on the platform perimeter end to end, and continuously improve detection rules and response playbooks in our Elastic SIEM.
• Work in the open: write clear technical notes, drive adoption of your changes with the engineering teams they affect, and grow through code review and pairing with the rest of the team.

Who you are

• Have 1 to 3 years of hands-on experience in security engineering, security operations, SRE, infrastructure or platform engineering, including some exposure to a cloud environment (AWS, GCP or Azure) in production - an internship or apprenticeship in one of those roles counts.
• Work daily with infrastructure as code and GitHub: you have written and shipped your own Terraform through reviewed pull requests, and you are comfortable operating and debugging workloads on Kubernetes.
• Use AI coding assistants (Claude or equivalent) as a normal part of how you work.
• Have carried at least one project through to production - security or not - and stayed with it past the first deployment until it was actually adopted.
• Have solid fundamentals: Linux, networking, cloud, Kubernetes and development/scripting, a pragmatic mindset, the ability to make decisions under uncertainty and follow through, and strong written communication skills - you can carry a proposal from draft to cross-team adoption.
• Are fluent in English (working language in writing); daily team conversations happen mostly in French, so being a French speaker or willing to learn is a strong plus.

It would be fantastic if you:

• Have worked with a SIEM (Elastic, Splunk, or equivalent), writing and tuning your own queries.
• Have done detection engineering, incident response, threat hunting, or CTFs.
• Can point to public write-ups, open-source contributions, or a home lab.
• Have prior experience in a regulated industry (healthcare, fintech, or public sector).

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