We’re hiring seasoned engineers to join our teams that work on core platform capabilities, improving our existing systems for extensibility and scalability, and building the future of Gusto's Tax platform. As a Gusto Software Engineer at this level, you’ll be guiding projects end-to-end by influencing initial feature specs, understanding how to take existing systems closer to desired end states, executing on projects, and maintaining code that powers core experiences. If you’re interested in building elegant software with far-reaching effects in our modern economy, join us!
🏢 About Gusto
At Gusto, we're on a mission to grow the small business economy. We handle the hard stuff — payroll, health insurance, 401(k)s, and HR — so owners can focus on their craft and their customers. With teams in Denver, San Francisco, and New York, we support more than 500,000 small businesses nationwide and are building a workplace that reflects the people we serve.
🎯 The Role
Payroll is the beating heart of Gusto’s business. The Tax team ensures Gusto customers remain compliant and confident by managing every aspect of payroll taxes—including setup, calculation, payments, filings, and year-end communications. We design seamless, end-to-end experiences that simplify complex processes and build the infrastructure that keeps taxes accurate and on time. By combining reliable systems with thoughtful design, our team makes one of the most complicated parts of running a business simple for employers. Tax is a stabilizing pace layer at Gusto: continuity and trust are paramount, change is deliberate, and impact is wide. The domain is highly complex and offers the opportunity to engage in system design that simplifies this for customers.
✅ Key Responsibilities
Design, build, and test the platform that supports tax compliance for millions of people
Help scale one of the largest Ruby/Rails and TypeScript/React applications in the world
Collaborate on complex and ambiguous problems with partnerships from Engineering, Product Management, Design, Data Science, Compliance, Operations, and other cross-functional teams
Improve the productivity and happiness of our teams with the services, tools, and APIs you build.
Build guardrails into the Tax platform that enable Gusto to safely leverage agentic AI to interact with tax concepts in a way that ensures compliance, accuracy, stability, and reliability.
Engage in a highly supportive environment working with others to drive productivity and innovation
Own and drive the technical strategy and roadmap for your team’s domain area in alignment with team and group-level OKRs
Identify and prioritize long-term investments to improve foundational systems and architecture
Lead improvements to incident response processes, tooling, and culture to enhance system reliability and team effectiveness
Mentor and develop engineers on your team working to create holistic and scalable solutions. Track record of elevating team capabilities through pairing, code review, and knowledge sharing.
📌 Required Qualifications
Successful applicants have at least 10+ years of experience
Experience in designing and developing robust, distributed systems using multiple general-purpose programming languages
Experience influencing and guiding the work of multiple teams on scaling, refactoring, and optimizing legacy products
Experience architecting, building, and testing large-scale production level code
An aptitude and interest in bringing clarity and simplicity to complex and ambiguous problems
Ability to communicate technical complexity and help facilitate informed tradeoffs
Enthusiasm for a highly collaborative, test-driven environment
Able to build maintainable, structured, well-documented code
Experience building fault-tolerant, mission-critical software
Experience building products in highly regulated and high risk domains
Experience in one of these domains is preferred: Payroll, taxes, or Compliance
Familiar with current AI tools (LLMs, Agents) and their shortcomings / benefits
Embeds AI in daily development workflow (scaffolding tests, summarizing docs) to measurably reduce cycle time.
Mentors engineers on effective AI usage and helps develop an AI strategy for other engineers
⭐ Desirable Experience
Experience with Ruby on Rails, Typescript, and React
🎁 Benefits
Our cash compensation amount for this role is targeted at $223,000/yr to $278,000/yr for San Francisco. Stock equity is additional. Final offer amounts are determined by multiple factors including candidate experience and expertise and may vary from the amounts listed above.
🛂 Visa & Eligibility
Gusto has physical office spaces in Denver, San Francisco, and New York City. Employees who are based in those locations will be expected to work from the office on designated days approximately 2-3 days per week (or more depending on role). The same office expectations apply to all Symmetry roles, Gusto's subsidiary, whose physical office is in Scottsdale.
Note: The San Francisco office expectations encompass both the San Francisco and San Jose metro areas.
