Cybersecurity Engineer – Authentication, Identity & Payments

About the role

Join Betclic’s Global Security team as a Security Engineer focused on authentication, identity and payment journeys. You will act as an embedded security partner throughout the product lifecycle, from design to implementation and continuous improvement.

Key responsibilities

• Conduct secure design reviews, threat modeling and provide actionable security recommendations for new projects.
• Assess existing code, APIs and security controls to identify vulnerabilities and improvement opportunities.
• Validate realistic attack paths through controlled security testing or proof‑of‑concept exercises.
• Promote secure development practices, reusable security patterns and support teams in implementing improvements.
• Lead and contribute to security initiatives across authentication and payment ecosystems, collaborating with Blue/Red Teams, Compliance and Fraud teams.

Required profile

• 3‑5 years of experience in cybersecurity, focusing on application or digital product security.
• Proven experience working directly with product and engineering teams in an agile environment.
• Ability to analyse both security architecture and implementation details.
• Strong communication skills with developers, architects, product managers and business stakeholders.
• Fluent in English and interested in payment security and fraud prevention.

Required skills

• Authentication and identity technologies: MFA, passkeys, OIDC, SSO, IAM, session management.
• Security assessment methods: threat modeling, architecture reviews, secure code reviews, controlled offensive testing.
• Security tooling: SAST, DAST, SCA, IaC scanning, secrets management, CI/CD security controls.
• Programming languages: C#, Rust, Kotlin, Dart, Flutter.
• Web and API security experience; cloud experience with AWS or Azure is a plus.

What we offer

• 25 days paid leave plus 10 RTT days.
• Ticket Restaurant® card (€11 per day, €6 funded by Betclic).
• 100% health insurance coverage for you and your children.
• Hybrid work model with 50% public transport reimbursement or sustainable mobility allowance.
• Permanent contract, immediate start, based in Bordeaux (remote possible with twice‑monthly onsite presence).