People Technology Senior SWE

Gusto is seeking a Senior Software Engineer to act as the dedicated architect and hands-on engineer for PeopleOS, an AI-native internal HR platform. The role involves designing, building, and shipping custom tools, integrations, and AI-powered workflows to support the internal People Technology ecosystem across hybrid office locations in Denver, New York, and San Francisco.

• 7+ years of full-stack software engineering experience, with production-quality work in Python, TypeScript/Node.js, or both
• Strong experience building and consuming REST APIs, including OAuth flows, rate limiting, pagination, and error handling
• Demonstrated ability to integrate SaaS platforms such as Workday, Greenhouse, Slack, or Google Workspace
• Comfort with AI/LLM API integration including Anthropic Claude, OpenAI, or equivalent, alongside prompt design and response parsing
• Experience shipping internal tools or developer tooling with real end users and feedback loops
• Strong written communication skills for documenting APIs, writing technical specs, and explaining trade-offs
• Understanding of the sensitivity of HR data and familiarity with implications of labor law and data retention guidelines

An experienced full-stack engineer and problem solver who thrives in ambiguity, cares deeply about the employee experience, and wants to build AI-powered internal tools used daily by real people.

Candidates apply on the employer's official site.