Staff Platform Security Engineer (IAM)

Gemini•San Francisco, NY

2d•Hybrid

About The Position

About the Company Gemini is a global crypto and Web3 platform founded by Cameron and Tyler Winklevoss in 2014, offering a wide range of simple, reliable, and secure crypto products and services to individuals and institutions in over 70 countries. Our mission is to unlock the next era of financial, creative, and personal freedom by providing trusted access to the decentralized future. We envision a world where crypto reshapes the global financial system, internet, and money to create greater choice, independence, and opportunity for all — bridging traditional finance with the emerging cryptoeconomy in a way that is more open, fair, and secure. As a publicly traded company, Gemini is poised to accelerate this vision with greater scale, reach, and impact. The Department: Platform Security The Platform Security team secures Gemini’s infrastructure through service hardening and by developing and supporting a suite of foundational tools. We provide secure-by-default infrastructure, consumable security services, and expert consultation to engineering teams for secure cloud and non-cloud infrastructure. The Role: Staff Platform Security Engineer (IAM) The Platform Security team builds zero-trust identity and access management foundations so every Gemini team can authenticate and authorize securely. As a Staff IAM Security Engineer, you will build IAM services, authentication systems, and identity infrastructure that protect both our workforce and workloads. This is a hands-on engineering role where you'll write production code daily, not just configuration. You'll own the full lifecycle of IAM solutions from design through production operations. This role requires strong software development skills, deep understanding of authentication protocols, and practical experience with PKI and secrets management. You'll partner with engineering teams to enable secure access patterns while maintaining usability. This role is required to be in person twice a week at either our San Francisco, CA or New York City, NY office.

Requirements

Strong software development skills in Python or Go with experience building production services
Deep knowledge of identity protocols and standards including OAuth2, SAML, OpenID Connect, and WebAuthn
Experience with PKI systems, certificate management, and applied cryptography
Experience with HashiCorp Vault or similar secrets management platforms
Proven expertise with AWS IAM, STS, and cloud identity services
Proficiency in Terraform for infrastructure-as-code
Experience building and operating high-availability authentication services

Nice To Haves

Experience with Okta, Auth0, or similar enterprise IdP platforms
Knowledge of SPIFFE/SPIRE and workload identity systems
Background in zero-trust architecture and BeyondCorp principles
Experience with hardware security modules (HSM) and key management systems
Contributions to identity or cryptography open source projects

Responsibilities

Build and maintain IAM services and authentication systems using Python or Go
Design and implement workforce identity solutions with Okta and multi-IdP architectures
Develop PKI infrastructure and certificate lifecycle management for service authentication
Create secrets management platforms with automated rotation and zero-knowledge patterns
Build authorization services, access control systems, and policy engines
Partner with engineering teams on identity architecture and secure authentication patterns
Participate in on-call rotation for platform security incidents