Senior Software Engineer - Financial Data & Payments (Remote)

Gusto; Town of Montana (WI); Hybrid; USD 183,000 - 245,000; Full time

Benefits offered by this job

Equity (RSUs)

Job summary

Gusto is hiring seasoned engineers to build the financial backbone of its money movement—ledger, reconciliation, and reporting systems used to fund payroll and pay employees and contractors. You’ll guide end-to-end architecture, scale existing systems, and maintain code powering core experiences in a role that blends technical excellence with cross-functional collaboration.

As part of the Payments organization, you’ll work across Engineering, Product, Data Science, and Finance to deliver robust,

Qualifications

• 10+ years of software engineering experience.
• Experience building fault-tolerant, distributed systems.
• Guiding multiple teams on scaling, refactoring, and optimization of legacy products.
• Architecting and testing large-scale production-grade code.
• Clear communication for informed tradeoffs.
• Experience in ledger, reconciliation, accounting systems, or payments infrastructure.
• Familiarity with double-entry accounting concepts.
• Bonus: bank verification or payments experience.
• Bonus: Ruby on Rails, TypeScript, and React experience.

Responsibilities

• Design, build, and test financial data systems including ledger and subledger.
• Build reconciliation at scale and trace breaks.
• Lead end-to-end variance investigations and root-cause fixes.
• Own the payment profile and funding methods.
• Simplify setup and verification for small businesses.
• Scale one of the world's largest Ruby/Rails and TS/React apps.
• Collaborate with cross-functional teams and mentor engineers.

Skills

Distributed systems design

Ruby on Rails

TypeScript

React

Financial data systems

Leadership

Mentoring

Git

AWS

Tools

SQL

Ledger/subledger tooling

Job description

Gusto is hiring seasoned engineers to build the financial backbone of its money movement—ledger, reconciliation, and reporting systems used to fund payroll and pay employees and contractors. You’ll guide end-to-end architecture, scale existing systems, and maintain code powering core experiences in a role that blends technical excellence with cross-functional collaboration.

As part of the Payments organization, you’ll work across Engineering, Product, Data Science, and Finance to deliver robust,