# Staff Software Engineer - LLM / AI Agents

**Company**: Twilio
**Location**: Remote - US
**Work arrangement**: remote
**Experience**: staff
**Job type**: full-time
**Salary**: $167,800 - $209,700 (Colorado, Hawaii, Illinois, Maryland, Massachusetts, Minnesota, Vermont, or Washington D.C.)
$177,700 - $222,100 (New York, New Jersey, Washington State, or California outside of the San Francisco Bay area)
$197,400 - $246,700 (San Francisco Bay area, California)
**Category**: Engineering
**Industry**: Technology

**Apply**: https://job-boards.greenhouse.io/twilio/jobs/7351031
**Canonical**: https://yubhub.co/jobs/job_855642a0-73b

## Description

At Twilio, we're shaping the future of communications from the comfort of our homes. We deliver innovative solutions to hundreds of thousands of businesses and empower millions of developers worldwide to craft personalized customer experiences.

Join us as Staff Software Engineer for Twilio Stytch's Agent team and help build the future of agent identity. You will be a foundational member of a team pioneering the next generation of authentication, verification, and identity solutions that will empower AI developers and protect users globally.

In this role, you'll:

- Build and own product capabilities for Stytch's agentic identity platform on Twilio.

- Design, implement, and maintain scalable, reliable distributed services, optimizing for security, latency, and developer experience.

- Partner with Product and Engineering leadership to set direction, translate customer needs into technical plans, and deliver high-impact roadmap features.

- Collaborate across Twilio and Stytch teams to align on architecture, integrate platform capabilities, and unblock cross-team initiatives.

- Write clean, maintainable, and well-tested code, setting a high bar for technical excellence across the team.

- Own the end-to-end lifecycle of new services, from initial design and prototyping through to production deployment and operational readiness.

- Mentor other engineers on the team, fostering a culture of innovation, ownership, and continuous learning.

- Communicate complex technical concepts effectively to diverse audiences, from fellow engineers to executive leadership.

- Stay at the forefront of industry trends and emerging threats in identity and authentication to ensure our products are secure and innovative.

We're seeking a talented Staff Engineer who brings deep hands-on technical expertise, a strategic mindset, and a passion for building secure, developer-first experiences.

## Skills

### Required
- 7+ years of experience building and operating highly scalable, distributed systems
- Experience working with agents and/or LLMs
- Strong hands-on coding skills and a willingness to dive deep to solve complex problems
- Demonstrated expertise in designing and implementing resilient, fault-tolerant systems
- Experience making high-impact technical decisions and leading technical initiatives

### Nice to have
- Experience building 0-to-1 products or working in a startup environment
- Deep experience with identity and access management, modern authentication protocols, and security architecture
- Knowledge of technologies like OAuth, SAML, OIDC, WebAuthn, passkeys, and zero-trust security principles
- Familiarity with modern verification techniques, including biometrics, document verification, and risk-based authentication
- Background in developing APIs and SDKs with a strong focus on developer experience