# Staff Software Engineer, Core Platforms
**Company:** [Gusto](https://hotfix.jobs/companies/gusto)
**Location:** San Francisco, CA, Denver, CO, New York, NY
**Salary:** $163K-$247K
**Experience:** 8+ years
**Skills:** Ruby on Rails, JavaScript, React, AI Tools, Ruby, Test-Driven Development
**Posted:** 2026-03-27
> Staff Software Engineer builds and scales core platform services like communications, reporting, and payments using Ruby/Rails and React. Requires 8+ years experience, AI tool usage, mentoring, and ownership of complex projects at scale.
## Job Description
## Responsibilities
- Design, build, and test Gusto core platform services – communications, reporting, dashboards, access, workflows, risk, payments, and compliance capabilities, among others
- Mentor other engineers to help solve some of the hardest technical problems out there in very complex domains and at a large scale
- Help scale one of the largest Ruby/Rails and Javascript/React applications in the world
- Collaborate with our Product Engineering, Product Management, Data, and Design teams to understand customer pain points, come up with solutions, and then prototype, iterate, and launch daily

## Requirements
- 8+ years of software development experience
- Passion for creating scalable, efficient platforms for users
- Experience leveraging AI tools or systems to accelerate development, improve testing, and deliver new platform capabilities
- Curiosity and experimentation with emerging AI frameworks, applying and sharing best practices to evaluate and scale AI use safely across teams
- Experience owning multi-quarter projects that solve complex engineering problems and make measurable user impact at scale
- Experience with large scale refactors, performance and reliability issues, and a strong sense of ownership over all aspects of your platform area
- Ability to mentor engineers to maximize their performance and impact

## Nice-to-Haves
- Experience in, or interest working in, Ruby on Rails
- Appreciation for a collaborative, test-driven environment
- Ability to build well-structured, maintainable, well-documented code
- Ability to effectively communicate across engineering teams and with business stakeholders

## Compensation
- $163,000–$204,000 in Denver & most remote locations
- $197,000–$247,000 for San Francisco & New York
- Stock equity is additional
**Apply:** https://hotfix.jobs/jobs/staff-software-engineer-core-platforms-at-gusto-f2fd56af-6388-456a-9fa7-37933a2e3e49
**Canonical:** https://hotfix.jobs/jobs/staff-software-engineer-core-platforms-at-gusto-f2fd56af-6388-456a-9fa7-37933a2e3e49