Senior Platform Security Engineer - Fintech Edge & TLS

United States Digital Space LLC; United States; Hybrid; USD 160,000 - 260,000; Full time

Benefits offered by this job

Competitive Compensation

Meaningful Equity

Health Benefits

401(k)

Parental Leave

Unlimited PTO

Hybrid NYC HQ / remote options

Work from home stipend

Job summary

the company is seeking a Senior Platform Security Engineer to own the security of the production edge that connects us to enterprise bank customers. You will work across certificate lifecycle operations, network security architecture, and vulnerability management on a small, high-ownership team where your decisions directly protect the systems processing billions of transactions.

Responsibilities include securing mutual-TLS infrastructure, private network connectivity, webhook security, and

Qualifications

• 6+ years of experience in platform, infrastructure, or network security engineering with hands-on production ownership.
• Deep experience with PKI and certificate lifecycle management.
• Strong understanding of TLS/mTLS and related security protocols.
• Hands-on AWS networking and security experience.
• Working knowledge of OAuth 2.0 (client-credentials flow, JWT validation) and certificate-bound token patterns.
• Experience setting security standards and collaborating with engineering teams to adopt them.

Responsibilities

• Own and operate secure infrastructure for production edge connections.
• Develop and maintain certificate lifecycle and mutual-TLS workflows for enterprise onboarding.
• Manage network and endpoint security configurations and monitoring.
• Lead vulnerability remediation end-to-end from scanning to closure.
• Set secure-build standards and enforce them across engineering teams.
• Collaborate across engineering, product, and GTM teams to improve overall security posture.

Skills

6+ years security engineering

PKI & certificate lifecycle

TLS/mTLS expertise

AWS networking & security

OAuth 2.0 / JWT

Security standards adoption

Tools

AWS CDK

Job description

the company is seeking a Senior Platform Security Engineer to own the security of the production edge that connects us to enterprise bank customers. You will work across certificate lifecycle operations, network security architecture, and vulnerability management on a small, high-ownership team where your decisions directly protect the systems processing billions of transactions.

Responsibilities include securing mutual-TLS infrastructure, private network connectivity, webhook security, and