Gusto
Senior Staff Software Engineer, Benefits
$191K–$265K
New York, NY - Hybrid · Senior Staff · Full-time · Posted Sep 18, 2026
- Experience
- 8+ years building scalable full-stack web applications.
About the job
Architects and builds scalable full-stack capabilities for Gusto’s benefits platform, including customer shopping workflows and AI-driven experiences.
What you'll do
- Architect and evolve customer-facing web platforms and shared services, emphasizing scale, performance, and rapid product iteration.
- Build and optimize AI interfaces and benefits workflows; write high-quality, tested code using AI-powered development tools.
- Mentor engineers and partner with business and technical teams to shape the platform roadmap.
What they ask for
- 8+ years building scalable full-stack web applications, including frontend expertise and backend API development, data modeling, and database schema design.
- Extensive experience building AI interfaces, iterating on prompts, and maintaining high-quality evaluations.
- Extensive experience applying AI tools to full-stack development and intelligent user experiences; familiarity with AI-driven personalization and willingness to experiment.
- Deep experience in CI/CD and observability best practices.
Nice to have
- Direct familiarity with React, Ruby on Rails.
- Experience with robust recommendation systems or AI architecture and scalability for reliable platform services.
Pay
USD 191,000/yr to USD 225,000/yr (base salary) in Denver & most remote locations; USD 225,000/yr to USD 265,000/yr (base salary) for San Francisco, Seattle & New York
Tools
React, TypeScript, Ruby on Rails
AI focus
Build AI interfaces for benefits shopping, apply AI-driven personalization, iterate on prompts and evaluations, and use AI tools to accelerate development and improve code quality and reliability.
Model-written summary · the original posting is authoritative