InternFlow

Greenhouse ·

full-time

Staff Software Engineer, Financial Infrastructure

Gusto · Burlingame, CA - Hybrid; Denver, CO - Hybrid; New York, NY - Hybrid; San Francisco, CA - Hybrid

Gusto is a platform focused on supporting the small business economy by providing integrated services for payroll, health insurance, and retirement benefits. As a Staff Software Engineer within the Financial Infrastructure team, you will be responsible for building and maintaining the core systems that facilitate the movement of money and assets for Gusto Retirement. This is a hands-on role that involves designing and shipping backend services and APIs, managing payments, settlements, and tax integrations, and ensuring the reliability of complex financial workflows. You will work closely with product, compliance, and operations teams to translate intricate financial requirements into production-ready software. The position requires a high level of technical ownership, including debugging production issues and improving system observability. This role is well-suited for a senior-level engineer with over eight years of experience who thrives in high-correctness domains and has a pragmatic, execution-focused approach. Candidates should be comfortable working with backend frameworks like Ruby on Rails and possess strong communication skills to mentor team members and collaborate across cross-functional groups. Experience in financial systems or payments is highly valued, as is an interest in leveraging AI tools to enhance development and testing processes.

staff software engineerfinancial infrastructurebackend developmentpayments systemsruby on railsapi designfintechsenior engineer

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. All full-time employees receive competitive base pay, benefits, and equity (RSUs) — because everyone who helps build Gusto should share in its success. Offer amounts are determined by role, level, and location. Learn more about our Total Rewards philosophy . AI is a fundamental part of how work gets done at Gusto. We expect all team members to actively engage with AI tools relevant to their role and grow their fluency as the technology evolves. AI experience requirements vary by role and will be assessed during the interview process. About the Role: You’ll be a key engineer focused on building and owning the systems that move money and assets through Gusto Retirement. This is a very hands-on role: owning backend services and APIs end-to-end, shipping production code, and working through real financial edge cases. You’ll partner closely with product, compliance, and operations to turn complex financial requirements into reliable software. If you like working on core systems where correctness matters and enjoy getting things shipped, you’ll be a great fit. About the Team: The Financial Infrastructure team owns the core money and asset flow systems for Gusto Retirement. We’re a senior team that works on payments, settlements, tax and compliance integrations, and much more. The work is complex and often cross-functional, so we stay focused, collaborate closely, and keep tight ownership of what we build. We work closely with product and partner teams, but we’re responsible for execution and reliability end-to-end. Here’s what you’ll do day-to-day: Design, build, and ship services and APIs for money movement and financial integrations Work on payments, settlements, reconciliation, and corrections involving real customer funds Build and support critical workflows like payroll integration, KYB/KYC, 401k loans, billing and invoicing, and IRA Partner with product, compliance, and operations to scope work and deliver production-ready solutions Debug production issues and improve reliability, observability, and operational tooling Collaborate with other engineering teams to integrate with shared systems and platforms Mentor other engineers to help solve some of the hardest technical problems out there in very complex domains and at a large scale Write clear, reliable, well-tested code that ships quickly and scales well Build a product that our customers genuinely love Here’s what we're looking for: 8+ years of software engineering experience building and shipping production products or platforms Strong experience with services, APIs, and data-heavy workflows. Experience working on financial systems, payments, or other high-correctness domains (or the ability to ramp quickly). Comfortable owning systems end-to-end, including production support and operational work. Experience working closely with PMs and cross-functional partners to deliver scoped work. Pragmatic, execution-focused approach to engineering. Clear communicator and collaborative teammate. Ability to mentor engineers to maximize their performance and impact Experience with Ruby on Rails (or a comparable backend framework). Bonus Points: Experience leveraging AI tools or systems to accelerate development, improve testing, and deliver new product capabilities. Curiosity and experimentation with emerging AI frameworks, applying and sharing best practices to evaluate and scale AI use safely across teams. Please note that travel to Gusto's office for onboarding is required for this position. If you have any questions regarding this requirement, please share with your recruiter. Our cash compensation amount for this role is targeted at $163,000–$204,000 in Denver & most remote locations, and $197,000–$247,000 for San Francisco & New York. 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. 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. When approved to work from a location other than a Gusto office, a secure, reliable, and consistent internet connection is required. This includes non-office days for hybrid employees. Our customers come from all walks of life and so do

RoleStaff Software Engineer, Financial Platform
CompanyGusto
LocationAustin, TX - Remote; Burlingame, CA - Hybrid; Chicago, IL - Remote; Denver, CO - Hybrid; Los Angeles, CA - Remote; Miami, FL - Remote; New York, NY - Hybrid; San Francisco, CA - Hybrid; Seattle, WA - Remote
CompensationNot disclosed
Posted2026-09-30
DeadlineRolling

Typical process for this type of role

A general guide — the exact steps for this specific listing may vary; check the original posting for details.

  1. 1ApplicationSubmit your resume through the apply link.
  2. 2ScreeningRecruiter reviews your background against the role.
  3. 3AssessmentA technical test, assignment, or coding round, depending on the role.
  4. 4Interview(s)One or more rounds with the hiring team.
  5. 5OfferOffer letter with compensation and start date.

Before you apply

0/4

Staff Software Engineer, Financial Infrastructure at Gusto: frequently asked questions

What is the salary for this role?
Gusto has not stated compensation in the listing. Check the original posting or ask during the application process.
Is the Staff Software Engineer, Financial Infrastructure position remote, hybrid or onsite?
The listing gives Burlingame, CA - Hybrid; Denver, CO - Hybrid; New York, NY - Hybrid; San Francisco, CA - Hybrid as the location and does not state a work mode.
What is the application deadline?
Gusto has not listed a fixed deadline, so apply early in case the opening is filled.
How do I apply for the Staff Software Engineer, Financial Infrastructure role?
Use the Apply button on this page. It opens the original listing on job-boards.greenhouse.io, where you submit your application with the company.

More at Gusto

Other jobs at Gusto

See all 30 openings at Gusto

Explore Related Placements


// similar opportunities

You might also like

Staff Software Engineer, Cloud Infrastructure

Airbnb

Airbnb logo
Remote, USAfull-time
Greenhouse

Airbnb was born in 2007 when two hosts welcomed three guests to their San Francisco home, and has since grown to over 5 million hosts who have welcomed over 2 b...

Apply now →

Software Engineer, Data Loading Infrastructure

Asana

Asana logo
San Franciscofull-time
Greenhouse

The Data Loading Infrastructure ( LunaDb ) team establishes core foundational architecture required to power web, mobile, and external API platforms, helping de...

Apply now →

Software Engineer, Agentic Infrastructure

Vercel

Hybrid - San Francisco, New York Cityfull-time
HybridAny GraduateGreenhouseSoftware Engineering# JavaScript# TypeScript# AWS# Terraform+6 more

About Vercel: Vercel is the agentic infrastructure company. We free people and agents to ship what’s next. For more than a decade, Vercel has shaped how the web...

['Hybrid location (San Francisco, NYC)', '3+ years experience required', 'On-call rotation']

Apply now →

Software Engineer - Infrastructure

Mercury

San Francisco, CA, New York, NY, Portland, OR, or Remote within Canada or United Statesfull-time
Greenhouse

The backbone of any technology org is its infrastructure, come join the team giving that skeleton superhuman abilities. The Infrastructure team at Mercury is an...

Apply now →

Staff Software Engineer

Okta

Okta logo
Bengalurufull-time
Greenhouse

Secure Every Identity, from AI to Human Identity is the key to unlocking the potential of AI. Okta secures AI by building the trusted, neutral infrastructure th...

Apply now →

Staff Software Engineer, Brokerage Infra

Robinhood

Menlo Park, CA; New York, NYfull-time
Greenhouse

Join us in building the future of finance. Our mission is to democratize finance for all. An estimated $124 trillion of assets will be inherited by younger gene...

Apply now →