Remote opportunity at
GustoSenior Staff Software Engineer, Gusto Agent & Partner Experiences (API)
Gusto provides HR, payroll, health insurance, and 401(k) services designed to assist small businesses. The company operates offices in San Francisco, Denver, and New York, and…
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About This Role
Gusto provides HR, payroll, health insurance, and 401(k) services designed to assist small businesses. The company operates offices in San Francisco, Denver, and New York, and supports over half a million small businesses across the United States. As a remote Senior Staff Software Engineer on the Agent & Partner Experiences team, the chosen candidate will act as a core technical leader uniting API infrastructure with artificial intelligence tools. This role…
Job Description
Gusto provides HR, payroll, health insurance, and 401(k) services designed to assist small businesses. The company operates offices in San Francisco, Denver, and New York, and supports over half a million small businesses across the United States. As a remote Senior Staff Software Engineer on the Agent & Partner Experiences team, the chosen candidate will act as a core technical leader uniting API infrastructure with artificial intelligence tools.
This role centers on building and scaling a platform that permits third-party developers to embed payroll into their software while enabling AI agents to manage payroll actions on behalf of users. The work involves writing production code within a Ruby on Rails framework, shaping API contracts and agent-facing utilities, and helping other engineers elevate their technical capabilities. Artificial intelligence is embedded in operations at Gusto, so participants are expected to engage with AI capabilities pertinent to their responsibilities.
Compensation for this position ranges from $213,000 to $236,000 annually for Denver and most remote regions, with stock equity offered in addition to base pay. Final salary decisions depend on individual expertise, experience, and location.
Responsibilities
- Tackle high-impact problems crossing multiple technical and organizational domains
- Architect API contracts and tools intended for partners and artificial intelligence agents
- Collaborate with internal agent partners and developer-customers to deliver payroll products
- Write clean, tested, and high-performing code
- Mentor engineers and promote technical standards across the organization
- Establish and uphold reliability and observability standards
- Identify and fix production issues
Requirements
- Minimum of 12 years of professional software development experience
- Background serving as a technical owner for organization-wide engineering initiatives and scaling teams
- Expertise in Ruby and Rails, including working across multiple codebases and layers of abstraction
- Experience designing and building platforms and public-facing APIs with a focus on scale, performance, and reliability
- Demonstrated history of mentoring peers and guiding technical approaches for ambiguous challenges
- Strong communication skills for translating technical constraints to business leaders and aligning teams
Qualifications
- Prior background in payroll, tax, or fintech domains
- Familiarity with designing interfaces consumed by models, including MCP servers, tool definitions, or function definitions
- Experience working with GraphQL at scale, encompassing query construction, data mapping, and performance reasoning
Core Skills
Benefits
- Competitive base pay
- Stock equity in the form of restricted stock units
Frequently Asked Questions
Answers are based only on the employer’s listing; where it doesn’t say, neither do we.
Is this position remote?
Yes, this role is listed as remote, though a secure, reliable, and consistent internet connection is required.
What is the salary range for this role?
The targeted cash compensation is $213,000 to $236,000 per year in Denver and most remote locations, with additional stock equity provided.
How many years of experience are required?
The posting requires 12 or more years of professional software development experience.
Sample Interview Questions
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