Platform Security Engineer (x/f/m)

Doctolib; France; Hybrid; EUR 75,000 - 110,000; Full time

Benefits offered by this job

Health insurance

Vacation days (25+ RTT)

Mental health and coaching services

Lunch vouchers

Job summary

Doctolib is seeking a Platform Security Engineer to protect cloud infrastructure and app ecosystems while enabling rapid, secure innovation. You will own security workstreams end‑to‑end, enforce guardrails, and drive remediation with platform and engineering teams.

You’ll work with Terraform, GitHub PRs, and Kubernetes, improving IAM, secrets management, and detections. Fluency in English is expected; French is a plus, with a hybrid office setup in Levallois-Perret, France.

Qualifications

• 1–3 years of hands-on experience in security engineering, security operations, SRE, or platform engineering in production cloud environments.
• Hands-on with Terraform through reviewed pull requests; comfortable operating and debugging workloads on Kubernetes.
• Familiar with English; willingness to work in a bilingual team (French is a plus).
• Have delivered at least one project to production and driven adoption beyond initial deployment.

Responsibilities

• Own a platform security workstream end‑to‑end from architecture to enforcement, including IAM hardening and policy controls.
• Ship changes as code with Terraform and GitHub PRs; ensure reversibility and no undocumented state.
• Harden cloud baseline, manage secrets, network guardrails, CI/CD controls, and remediation automation.
• Lead incident investigations end‑to‑end and improve detection rules and response playbooks.
• Write clear technical notes and drive cross‑team adoption through code reviews and pairing.

Skills

Security engineering

Cloud security

Infrastructure as code

Kubernetes

Tools

Terraform

GitHub

Elastic SIEM

Kubernetes

Job description

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

Your responsibilities include but are not limited to: 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

You’ll be a great fit if you:

• 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 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
• Feature Building Interview
• System Design Interview
• Behavioral Interview
• At least one reference check

Job details

Permanent position Tech stack: Terraform, AWS, Kubernetes, Elastic SIEM Full-time Levallois-Perret, France Hybrid work setup (up to 2 remote days per week) Start date: as soon as possible

We welcome everyone

We welcome everyoneAt 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.

Your data privacyAll 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.