Sierra · 2 days ago
Software Engineer, Security
San Francisco, CA
Full-time
Onsite
Mid Level
$200K/yr - $330K/yrSierra is a company focused on enhancing customer experiences through AI. They are seeking a Software Engineer in Security to design and implement secure systems across their platform, ensuring data security and privacy while collaborating with product and platform teams.
Artificial Intelligence (AI)Enterprise SoftwareSaaS
Responsibilities
Build the Foundations of Trust. Design and ship systems that make Sierra’s platform secure by default — spanning privacy, identity, authentication, authorization, and data security. You’ll work across backend services, APIs, and infrastructure layers to embed security-conscious design into the core of our product
Own Cross-Cutting Systems. Partner with product and platform teams to implement and evolve Sierra’s trust primitives: identity management, access control, auditability, and data lifecycle management. You’ll make pragmatic design trade-offs between usability, performance, and security
Secure Agentic AI Systems. Build controls that ensure AI agents can't leak customer data, execute unauthorized actions, or be manipulated into unintended behavior. Design runtime policy enforcement for tool use, implement safe agent sandboxing, and create boundaries that protect data while keeping agents powerful and useful
Automate and Scale Security-Adjacent Workflows. Create developer-friendly tooling to reduce risk and friction — whether through automating security checks in CI/CD, enforcing privacy boundaries through schema validation, or instrumenting runtime monitoring for sensitive events
Qualification
Required
Strong Software Engineering Skills. Experience building and maintaining production systems in Python, Go, or TypeScript. You're comfortable designing APIs, integrating with authentication or identity frameworks, and shipping high-quality code in a fast-paced environment
Security Mindset. You may not be a dedicated security engineer, but you think like one — considering how data flows, where it's stored, who can access it, and how to design for least privilege and transparency
Product and Platform Mindset. You care about building secure systems that enable, not block, innovation. You work closely with product teams to make trade-offs clear and help them move quickly without sacrificing trust
Curiosity and Ownership. You're the kind of engineer who goes deep — tracing how a token propagates through the stack, or how an LLM might interact with internal APIs — because you want to understand and strengthen the system
Preferred
You've worked on privacy, identity, trust & safety, auth/authz, or data protection systems
You've built security frameworks, libraries, or tooling that developers actually use or integrated security automation into CI/CD pipelines
You have exposure to AI systems or care about designing secure-by-default LLM applications
You think like an attacker — you naturally ask 'what could go wrong?' when reviewing designs or while building systems. You've found or fixed real security issues in production systems
You thrive in 0→1 environments, where foundational systems have to balance speed, reliability, and trust
Benefits
Flexible (Unlimited) Paid Time Off
Medical, Dental, and Vision benefits for you and your family
Life Insurance and Disability Benefits
Retirement Plan (e.g., 401K, pension) with Sierra match
Parental Leave
Fertility and family building benefits through Carrot
Lunch, as well as delicious snacks and coffee to keep you energized
Discretionary Benefit Stipend giving people the ability to spend where it matters most
Free alphorn lessons
Company
Sierra
Sierra provides a platform that builds and manages conversational AI agents for customer experiences.
Founded in 2023
201-500 employees
H1B Sponsorship
Sierra has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (11)
2024 (2)
Funding
Current Stage
Growth StageTotal Funding
$635MKey Investors
SoftBank Vision FundGreenoaks
2025-12-04Series Unknown
2025-09-04Series Unknown· $350M
2024-10-28Series Unknown· $175M
Leadership Team
Bret Taylor
Co-Founder
Recent News
GlobeNewswire
2026-01-06
Company data provided by crunchbase