STATION F · 16 hours ago
PRINCIPAL SECURITY ENGINEER
Paris, NY
Full-time
Hybrid
Lead/Staff
$220K/yr - $300K/yr
10+ years expDfns is a leading Wallets-as-a-Service platform that simplifies digital asset management for fintechs and institutions. The Principal Security Engineer will lead security design and development, ensuring the protection of systems and client wallets while collaborating with various teams to integrate security across all layers of the stack.
Business DevelopmentIncubatorsInternet
Responsibilities
Lead security architecture, setting priorities and ensuring secure, reliable delivery
Drive threat modeling, vulnerability management, and pentesting (internal and external)
Conduct and oversee security reviews (code, design, architecture, and dynamic testing)
Design and implement defense-in-depth security controls
Build frameworks for automated security testing and SSDLC enforcement
Mentor engineers on secure coding, incident response, and best practices
Manage bug bounty, security releases, and coordinate with external researchers
Monitor and respond to emerging threats, including supply chain risks
Represent the company in client discussions, audits, and at security conferences
Qualification
Required
10+ years of experience in security engineering, with leadership in fintech or blockchain
Strong expertise in application security, smart contract security, and cryptography
Deep understanding of pentesting, static/dynamic testing, vulnerability management
Hands-on with secure networking, cloud security (AWS), and software supply chains
Familiar with industry standards and frameworks (ISO 27001, NIST, CIS, SOC 2, etc.)
Strong knowledge of network and web protocols, applied cryptography, and PKI
Experience integrating security into CI/CD pipelines and observability systems
Proficient in TypeScript and Rust (or similar languages) with secure coding expertise
Clear communicator who can explain complex security concepts to both technical and business stakeholders
Preferred
Lead security architecture, setting priorities and ensuring secure, reliable delivery
Drive threat modeling, vulnerability management, and pentesting (internal and external)
Conduct and oversee security reviews (code, design, architecture, and dynamic testing)
Design and implement defense-in-depth security controls
Build frameworks for automated security testing and SSDLC enforcement
Mentor engineers on secure coding, incident response, and best practices
Manage bug bounty, security releases, and coordinate with external researchers
Monitor and respond to emerging threats, including supply chain risks
Represent the company in client discussions, audits, and at security conferences
Benefits
Healthcare and travel expenses
Company
STATION F
STATION F is a business incubator for startups.
11-50 employees
Funding
Current Stage
Early StageLeadership Team
Kaan Armagan
Founder in Residence
Romain LAURENT
Founder in Residence
Recent News
The French Tech Journal
2025-11-14
The French Tech Journal
2025-11-10
The French Tech Journal
2025-11-06
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