Software Engineer, Identity

About this role

Keycard is seeking a Staff Identity Engineer to design and build core identity, authentication, authorization, and data systems for an agent-native control plane. You'll architect distributed, multi-tenant infrastructure that delivers auth decisions at scale while working directly with founders and helping shape an AI-first engineering culture.

What you'll do

• Design and build identity, authentication, and authorization systems handling OAuth, OIDC, mTLS and related protocols
• Architect distributed systems ensuring security, multi-tenancy, and sub-10ms auth decision latency across deployments
• Develop core services, SDKs, and APIs for developers integrating Keycard's control plane
• Make technical trade-offs to ship quickly while building long-term system foundations
• Lead by example on technical excellence and help grow the engineering team
• Shape how Keycard adopts agents internally as an agent-native organization

What they're looking for

• Identity and access management systems (OAuth, OIDC, SCIM, mTLS)
• Distributed systems design with focus on consensus and reliability
• Go, Rust, or similar systems programming languages
• Multi-tenant system architecture
• API and SDK design
• Security-first thinking
• 0→1 product building
• Clear written and async communication

Benefits

• Work on frontier technology in agent-native systems
• Significant autonomy and opportunity for mastery
• Culture that embeds AI agents into engineering foundation
• Direct collaboration with founders and cross-functional teams
• Remote, distributed team environment
• Compensation with equity upside