Senior Platform Security Engineer

Responsibilities

• Own and operate mutual-TLS certificate infrastructure for enterprise bank onboarding and product operations.
• Build and maintain security workflows for private network connectivity, including endpoint tenancy mapping and connection monitoring.
• Operate webhook delivery security, including signing-secret rotation, client-certificate management, and delivery-failure response.
• Drive vulnerability remediation from application and infrastructure scanning through verified closure.
• Set and codify secure-build standards for the engineering team.
• Improve Spade’s security posture by collaborating with engineering, product, and go-to-market teams.

Requirements

• 6+ years of platform, infrastructure, or network security engineering experience with hands-on production-system ownership.
• Deep experience with PKI and certificate lifecycle management.
• Strong understanding of TLS and mutual TLS.
• Hands-on AWS networking and security experience.
• Working knowledge of OAuth 2.0, including client-credentials flow and JWT validation, plus familiarity with certificate-bound token patterns.
• Experience setting security standards and working with engineering teams to adopt them.
• Fintech or payments experience and experience integrating with bank or financial institution network edges are preferred.
• Experience with cloud infrastructure tools such as AWS CDK is preferred.
• PCI DSS or SOC 2 technical control implementation experience is preferred.
• Experience working on a small or early-stage security team is preferred.

Benefits

• Meaningful equity with early exercise flexibility and an extended post-termination exercise period.
• 100% paid medical, mental health, dental, and vision premium option plus One Medical membership for US-based employees.
• 401(k) plan.
• 12 weeks of fully paid parental leave.
• Unlimited paid time off.
• Hybrid, dog-friendly NYC headquarters with remote opportunities for certain roles in the US and Canada.
• Work-from-home stipend, company-paid lunches, Citibike membership, and other perks.