Software Engineer, Agent at Sierra

Sierra creates a platform helping businesses build customer experiences enhanced by AI. Headquartered in San Francisco with growing offices across multiple continents, the company is guided by values including Trust, Customer Obsession, Craftsmanship, Intensity, and Family. Co-founders include Bret Taylor (Board Chair of OpenAI, former Salesforce co-CEO) and Clay Bavor (18-year Google veteran).

What You'll Do

Design and deliver production-grade AI agents: Build and ship highly performant, reliable, and intuitive AI agents serving as mission-critical systems driving revenue across finance, healthcare, and commerce industries.

Drive the Agent Development Life Cycle (ADLC): Maintain complete ownership from pilot through deployment and continuous iteration, building and tuning AI agents in production while establishing ADLC best practices.

Partner with enterprises and startups: Work directly with leaders at large enterprises and cutting-edge Silicon Valley startups to understand challenges and deploy AI agents at scale.

Build the future of the platform: Surface unmet customer needs, prototype new tools and features, and collaborate with research, product, and platform teams.

Example Projects

Design AI agents for telecommunications/media companies outperforming human agents in subscription churn management

Develop agents capable of navigating complex customer interactions including device troubleshooting and product personalization

Create industry-specific, generalizable AI agent frameworks

Facilitate design partnerships for new agent architectures and self-service capabilities

Experiment with voice models and integrate them at enterprise scale

Required Qualifications

Experience building and scaling end-to-end production systems

Strong technical problem-solving in fast-changing, ambiguous environments

Builder/tinkerer mentality with high agency and creative obstacle-solving

Comfort working directly with customers on real-world problems

Excellent communication across technical and non-technical audiences

Preferred Qualifications

Experience building or deploying AI/LLM systems in production

Founder or founding engineer background

Familiarity with eval frameworks, agent tooling, RAG pipelines, and prompt engineering

Experience with React, TypeScript, and/or Go

Previous customer-facing or external stakeholder leadership roles

Benefits: Flexible PTO, medical/dental/vision coverage, life insurance, disability benefits, 401(k) match, parental leave, fertility benefits, on-site meals/snacks, discretionary stipend, equity participation.