# Staff Software Engineer, HR Experiences

**Company:** [Gusto](https://hotfix.jobs/companies/gusto)
**Location:** New York, NY
**Role:** Fullstack Engineering
**Salary:** $199k – $247k/yr
**Experience:** 8+ years
**Skills:** Ruby on Rails, JavaScript, React, AI Agents, agentic coding tools, Claude Code, Codex, mcp tools
**Posted:** 2026-07-27

> Staff full-stack engineer building compliant HR guidance, documentation, and AI agents/tools to scale HR support for small businesses at Gusto. Requires 8+ years experience owning complex, cross-functional projects end-to-end, with Ruby/Rails, React, and agentic AI tool proficiency.

## Job Description

## Responsibilities
- Design, build, and test across Gusto's HR experience — the employer-facing document and guidance tools, and the employee-facing side of that same experience.
- Build AI tools and agents that help scale Gusto's HR Partners team, automating the compliance and document workflows human HR partners handle today.
- 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 Management, Data, Design, and Platform Engineering teams to understand customer pain points, come up with solutions, and then prototype, iterate, and launch.
- Build products that our customers genuinely love.
- Operate across the full product lifecycle: shaping features from early spec and design through to launch and long-term iteration. This includes writing clean frontend code, designing and building reliable backend APIs, influencing product direction, and taking ownership of what happens after a feature ships.

## Requirements
- 8+ years of software development experience.
- Experience owning multi-quarter projects that solve complex engineering problems and make measurable customer impact at scale.
- Experience driving large, cross-functional projects end-to-end through ambiguity — scoping, sequencing, and unblocking without needing the problem pre-broken-down; aligning multiple stakeholders and working with multiple teams.
- Actively uses agentic coding tools (for example, Claude Code or Codex) as part of your daily engineering workflow, and has used them to meaningfully accelerate yourself and others.
- Experience with, or strong interest in, building agents and MCP tools — and judgment about applying them safely in domains where "mostly right" isn't good enough.
- Ability to mentor engineers to maximize their performance and impact.
- 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.

## Nice-to-Haves
- Compliance/HR Domain Expertise: experience building products in regulated, compliance-heavy domains (HR, payroll, benefits, tax, or similar), especially where requirements vary by state or locality.

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