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Staff Security Engineer

Paris, France🌐 Remote💼 Full-time🗓 2026-08-26 → 2026-09-26

Core

Build security platforms and harden systems for products, data, and engineering infrastructure.

Role type

Staff Security Engineer (hands-on IC)

Builds

Security capabilities, hardened systems, and privacy architecture for engineering platforms

Domain

Fintech / Cybersecurity

Deliverable

production ML models | product features | infrastructure

Required skills

Application security, API security, IAM (OAuth2/OIDC/WebAuthn), Cloud security, Cryptography (KMS/HSM), Tokenization, Threat modelling, Security monitoring

Preferred skills

Large-scale SaaS/fintech experience, Multi-tenant architectures, Insider risk management, Privacy-enhancing technologies

Technologies

OAuth2, OIDC, WebAuthn, FIDO2, RBAC, ABAC, KMS, HSM

Responsibilities

Identify and reduce high-impact security risks across applications and APIs; Strengthen authentication, authorization, and access controls; Design controls to limit blast radius of compromised accounts; Build reusable security capabilities into the engineering platform; Perform threat modelling and targeted security reviews; Contribute to long-term data isolation and encryption architectures

Seniority

Staff, hands-on IC

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