Staff Software Engineer, Core Platforms

We are seeking a seasoned full-stack software engineer to join the teams behind Gusto's product platforms. As a Staff Software Engineer, you will operate across the full lifecycle of foundational systems, shaping architecture, building self-service internal features and APIs, and owning their performance.

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 complex technical problems
• Scale one of the largest Ruby/Rails and Javascript/React applications in the world
• Collaborate with Product Engineering, Product Management, Data, and Design teams to understand customer pain points and develop solutions
• Build platforms that engineering teams rely on and trust to deliver products that customers love

Requirements:

• 8+ years of software development experience
• Passion for creating scalable, efficient platforms
• Experience leveraging AI tools or systems
• Curiosity and experimentation with emerging AI frameworks
• Experience owning multi-quarter projects with measurable user impact
• Experience with large-scale refactors, performance, and reliability issues
• Ability to mentor engineers

Preferred qualifications:

• Experience in Ruby on Rails
• Appreciation for a collaborative, test-driven environment
• Ability to build well-structured, maintainable code
• Effective communication across engineering teams and with business stakeholders

We offer competitive base pay, benefits, and equity (RSUs). The cash compensation amount for this role is targeted at $163,000–$204,000 in Denver and $197,000–$247,000 in San Francisco and New York.