Senior Security Engineer

Entangled Future; France; Hybrid; EUR 90,000 - 130,000; Full time

Benefits offered by this job

BSPCE plan

Remote policy up to 40%

Parental plan and child care support

25 days vacation + RTT

Transport cost coverage

Competitive health coverage

Job summary

A senior security engineer role at Alice & Bob in Paris/Aubervilliers focuses on protecting the integrity of our IT infrastructure, applications, and R&D IP. You will own security initiatives end to end, set company-wide standards, and mentor junior engineers as we shape a strategic security roadmap.

Join a cross-functional team driving security across cloud, containers, and quantum labs, with a flexible remote policy and strong growth opportunities in a cutting-edge field.

Qualifications

• 5+ years of cybersecurity or related engineering experience.
• Hands-on experience with Infrastructure as Code (Terraform).
• Solid experience securing containers and Kubernetes environments.
• Strong fundamentals in vulnerability management, incident response, and threat modeling.
• Proficiency with identity technologies (SSO/SAML/OIDC, SCIM).
• Experience with security monitoring tooling (EDR/XDR, SIEM).
• Scripting skills (Python, Bash).
• Experience with CI/CD security tooling and integration.
• Degree in CS/Cybersecurity or equivalent with proven track record.

Responsibilities

• Own key security initiatives end to end across IT infrastructure and applications.
• Set standards and best practices; mentor junior engineers.
• Secure lab environments including embedded/firmware security and OT/ICS hardening.
• Collaborate with engineering, IT, hardware and physics teams to embed security by design.

Skills

Security architecture

Cloud security

Incident response

Threat modeling

Scripting

Education

Bachelor's/Master's in CS or Cybersecurity

Tools

Terraform

Kubernetes

EDR/XDR

SIEM

SAST/DAST/SCA

Job description

Senior Security Engineer at Alice & Bob, Paris & Aubervilliers. A senior-level full time position in the IT and ML Ops team, listed under software engineering.

We're a diverse team of 250+ brilliant minds from over 35 countries united by a single goal: to revolutionise computing with a practical fault-tolerant quantum machine. Are you ready to take on unprecedented challenges and contribute to revolutionising technology? Join us, and let's shape the future of quantum computing together!

About the Mission

As Alice & Bob scales from research breakthroughs to industrial-grade quantum systems, protecting the integrity of our infrastructure, our applications, and the intellectual property behind years of R&D becomes mission-critical. Security is a core enabler of how fast and how safely we can move.

About the Role

We're looking for a Senior Security Engineer to help secure and evolve our IT infrastructure and applications, spanning everything from corporate identity systems to the security of our quantum R&D labs. You'll own key security initiatives end to end, set standards and best practices across the company, and mentor junior engineers as you help shape our strategic security roadmap.

Recruitment Process

• Screening Call with Grace, Talent Acquisition Specialist (30 min)
• Hiring Manager Interview with Matthew (45 min)
• Onsite Technical Interview with the Team & Take home test (120 min)
• Leadership Team Interview (30 min)
• Fit Interview (45 min)
• Reference check

- Our success is your success: own it with our BSPCE plan

- Direct IP Compensation: Earn substantial bonuses for driving the core patents that define our quantum architecture.

- Flexible remote policy, up to 40 % a month

- A P arental plan including additional benefits such as crèche support or additional days-off to take care of under 12 years old children

- 25-day vacation policy (as per French law) + RTT

- Half of transportation cost coverage (as per French law), or yearly allowance for the die-hard bicycle users

- Competitive health coverage, with Alan.

Responsibilities

• Corporate security - identity and access management (SSO, SCIM), security observability and audit logging, and operational cybersecurity (EDR/XDR, SIEM, vulnerability management, incident response).
• Application security - vulnerability management, CI/CD security (SAST, DAST, secret detection, IaC scanning), software supply chain security (SCA, SBOM), and threat modeling embedded into the development lifecycle.
• Infrastructure and industrial security - Infrastructure as Code (Terraform), Kubernetes security, and - uniquely for this role - securing the lab environment itself: instrumentation, control systems, embedded/firmware security, and OT/ICS hardening across our quantum R&D equipment.
• Leadership - mentoring engineers, driving continuous improvement, and partnering closely with engineering, IT, hardware, and physics teams to embed security by design without slowing down research.

Requirements

• 5+ years of experience in cybersecurity or a closely related engineering role
• Proven hands-on experience with Infrastructure as Code (Terraform)
• Solid experience securing containers and Kubernetes environments
• Strong fundamentals across both application and corporate security - vulnerability management, incident response, threat modeling
• Strong hands-on experience with identity technologies (SSO/SAML/OIDC, SCIM)
• Proficiency with security monitoring tooling (EDR/XDR, SIEM, audit logging)
• Solid scripting and automation skills (Python, Bash, or similar)
• Practical experience with application security tooling (SAST/DAST, SCA) and CI/CD security integration
• Degree in Computer Science, Cybersecurity, or a related field (Bac+3 to Bac+5), or an equivalent self-taught/bootcamp background with a proven track record
• Strong ownership and autonomy, clear communication with technical and non-technical stakeholders, and a genuine mentoring mindset