Build scalable tax compliance platforms at Gusto using distributed systems, AI tools, and contemporary software engineering practices. This role is based in Gusto office locations with designated in-office days.
As a seasoned Software Engineer, you will guide projects from feature specifications through implementation and maintenance. You will help build Gusto’s Tax platform, simplify complex systems, and support payroll tax experiences for millions of people. The work spans Ruby, Rails, TypeScript, React, and cross-functional collaboration.
Key Responsibilities: Design, build, and test tax compliance platform capabilities
Scale Ruby, Rails, TypeScript, and React applications
Own technical strategy and roadmap for your domain
Build guardrails for compliant,



reliable agentic AI usage
Mentor engineers through pairing, reviews, and knowledge sharing
Requirements: At least 10+ years of engineering experience
Experience designing robust distributed systems
Experience architecting large-scale production code
Experience with fault-tolerant, mission-critical software
Familiarity with AI tools, including LLMs and agents
Bring distributed systems, tax platform, and AI expertise to Gusto’s reliable payroll infrastructure for millions of people.

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📌 Senior Tax Platform Software Engineer (Ontario)
🏢 Gusto
📍 Ontario