Software Engineer, Security

The role

You will build and maintain the foundations of trust for Sierra's AI agent platform. This includes designing secure systems for identity, authentication, and data security across all production layers.

What you will do

• Design and ship systems for agent safety, privacy, identity, authentication, authorization, and data security
• Implement and evolve trust primitives like identity management and access control
• Make design trade-offs between usability, performance, and security
• Build controls to prevent AI agents from leaking data or executing unauthorized actions
• Design runtime policy enforcement for tool use and implement safe agent sandboxing
• Create developer-friendly tooling to automate security checks in CI/CD
• Enforce privacy boundaries through schema validation
• Instrument runtime monitoring for sensitive events

Required qualifications

• Experience building and maintaining production systems
• Comfort designing APIs
• Experience integrating with authentication or identity frameworks
• Ability to use AI-assisted development tools to build, test, and ship code
• Security mindset regarding data flows, storage, and access
• Product and platform mindset to build secure scalable systems
• Ability to take ambiguous, cross-cutting problems from first principles to production

Nice to have

• Worked on privacy, identity, trust & safety, authN/authz, or data protection systems
• Built security frameworks, libraries, or tooling that developers use
• Integrated security automation into CI/CD pipelines
• Exposure to AI systems or designing secure-by-default LLM applications
• Ability to think like an attacker
• Experience finding or fixing real security issues in production systems
• Thrive in 0→1 environments

Benefits

• Flexible (unlimited) paid time off
• Medical, dental, and vision benefits for you and your family
• Life insurance and disability benefits
• Retirement plan dependent on country of employment
• Parental leave
• Fertility and family building benefits
• Lunch, delicious snacks and coffee when working onsite
• Discretionary benefit stipend
• Free alphorn lessons
• Equity plans for eligible full-time employees

About the company

Sierra is a platform for customer-facing AI agents working with brands like The GAP, Rocket Mortgage, SoFi, Sutter Health, and SoftBank. The company is primarily in-person based in San Francisco.