Software Engineer, Agent (Spanish speaking)

San Francisco · New York, NY · Toronto · Full-time · Onsite · Posted Oct 7, 2026

At a glance

Sierra is the leading platform for customer-facing AI agents, working with many of the world's biggest brands — including The GAP, Rocket Mortgage, SoFi, Sutter Health, and SoftBank — to transform how they serve customers and grow their businesses. We are primarily an in-person company based in San Francisco, with growing offices across North America, Europe, and Asia.
We are guided by a set of values that are at the core of our actions and define our culture: Trust, Customer Obsession, Craftsmanship, Intensity, and a commitment to balancing Family along the way. These values are the foundation of our work, and we are committed to upholding them in everything we do.
Our co-founders are Bret Taylor https://www.linkedin.com/in/brettaylor/ and Clay Bavor https://www.linkedin.com/in/claybavor/. Bret currently serves as Board Chair of OpenAI. Previously, he was co-CEO of Salesforce (which had acquired the company he founded, Quip) and CTO of Facebook. Bret was also one of Google's earliest product managers and co-creator of Google Maps. Before founding Sierra, Clay spent 18 years at Google, where he most recently led Google Labs. Earlier, he started and led Google’s AR/VR effort, Project Starline, and Google Lens. Before that, Clay led the product and design teams for Google Workspace.

Sierra is seeking a Software Engineer to design and deliver production-grade AI agents for major global brands.
This role involves full ownership of the agent development life cycle, from initial pilot through deployment and iteration.
The position requires professional fluency in both Spanish and English to support customer-facing AI initiatives.

Design and deliver production-grade, scalable AI agents for industries including finance, healthcare, and commerce.
Own the Agent Development Life Cycle (ADLC) from initial pilot through deployment and continuous iteration.
Partner with large enterprises and startups to understand business challenges and build AI agents that transform operations.
Surface unmet customer needs to guide the evolution of the core platform.
Prototype new tools and features in collaboration with research, product, and platform teams.
Experiment with voice models and integrate them at scale for enterprise-grade customers.
Build generalizable AI agent frameworks tailored for industry-specific use cases.

Professional fluency in both Spanish and English.
Experience building and scaling end-to-end production systems.
Strong technical problem-solving skills in fast-changing, ambiguous environments.
Builder and tinkerer’s mindset with high agency.
Comfort working directly with customers to understand needs and solve real-world problems.
Excellent communication skills for both technical and non-technical audiences.