Senior Platform API Engineer - Agent & Partner

The Briefed; Denver (CO); On-site; USD 190,000 - 260,000; Full time

Job summary

Gusto is seeking a Senior Staff Software Engineer for the Agent & Partner Experiences team. You will influence the organization as a technical leader, bridging Ruby on Rails code with API and AI interfaces to enable payroll in developers’ apps.

Sit at the interface of our API and AI world, delivering a scalable platform experience. You will hands-on code in a complex Rails stack, mentor others, and set standards for reliability and performance while collaborating across teams to serve developers

Qualifications

• 12+ years of professional software development experience.
• Experience owning engineering initiatives at scale.

Responsibilities

• Identify and solve high-impact problems spanning multiple domains.
• Design API contracts and agent-facing tools for partners and AI agents.
• Engage with developer-customers and internal teams to deliver payroll platform.
• Ship clean, well-tested code with performance in mind.
• Mentor engineers and raise technical standards across the org.
• Ensure reliability and observability; troubleshoot production issues.

Skills

Ruby on Rails

API design

Platform scaling

Mentoring

Effective communication

Tools

GraphQL

Job description

Gusto is seeking a Senior Staff Software Engineer for the Agent & Partner Experiences team. You will influence the organization as a technical leader, bridging Ruby on Rails code with API and AI interfaces to enable payroll in developers’ apps.

Sit at the interface of our API and AI world, delivering a scalable platform experience. You will hands-on code in a complex Rails stack, mentor others, and set standards for reliability and performance while collaborating across teams to serve developers