Skip to content
GustoGustoDenver, CO

Principal Software Engineer - Pay Group Engineering

Leads end-to-end projects improving Gusto's payroll/tax platform for scalability and compliance. Requires 15+ years experience scaling Ruby/Rails & TypeScript/React apps, system design expertise, and AI/ML knowledge.

215k – 295k
Hybrid15+ YOEFullstack Engineering

About the role

About the Team

Pay Group teams handle product, ops, and service components for onboarding customers, processing payrolls, calculating taxes, paying/filing with tax agencies, and maintaining compliance.

Sub-Teams:

  • Tax Accuracy: Gathers/maintains info for accurate, timely tax payments/filings.
  • Ledger: Builds payroll ledger for accrual accounting across payroll, risk, payments, accounting.
  • Engine: Enables compliant pay with payroll compliance team.
  • Platform: Develops common interface for payroll/tax data interactions.

Here’s what you’ll do day-to-day:

  • Function as a Technical Lead across multiple teams, keeping engineers unblocked and delivering high-quality work.
  • Design, build, and test foundation for compliant payroll for millions.
  • Help scale large Ruby/Rails and TypeScript/React applications.
  • Collaborate on complex problems with Engineering, Product, Design, Data Science, Compliance, Operations.
  • Mentor and grow fellow engineers on scalable solutions.
  • Drive product development from concept to launch.
  • Improve team productivity with services, tools, APIs.
  • Engage in supportive environment for productivity/innovation.
  • Stay up-to-date with AI and Machine Learning, applying to projects.

Here’s what we're looking for:

  • 15+ years experience.
  • Build maintainable, structured, well-documented code.
  • Strong knowledge of data structures, data modeling, system design.
  • Experience across 3+ teams, influencing product/team direction.
  • Platform products depended on company-wide.
  • Engineering large-scale production systems.
  • Clarity/simplicity in complex problems, communicating to stakeholders.
  • Operationalizing/scaling interconnected systems.
  • Collaborative, test-driven environment.
  • Complex regulated domains (HR, Payroll, Taxes, Compliance).
  • AI tools for building/testing/iterating.
  • Evaluate AI outputs with success criteria.
  • Current on backend tech/AI frameworks; experiment with new approaches.
  • Contribute to shared AI tools/templates.

Compensation

$215,000-$252,000/yr (Denver & most remote); $251,000-$295,000/yr (San Francisco, Seattle, New York). Stock equity additional.

Skills

Ruby on RailsTypeScriptReactSystem DesignData StructuresData ModelingAIMachine LearningPlatform EngineeringScalable Systems
Idme

Principal Engineer

IdmeMountain View, CA

Principal Engineer owning data models, API contracts, and architecture for ID.me's Work Profiles and Communities platforms that verify organizational affiliations and issue reusable credentials at scale. Requires 10+ years experience with deep expertise in data modeling, API design, and configuration-driven systems for high-assurance identity use cases.

215k – 307k
On-site10+ YOEFullstack Engineering
Shield AI

Principal Engineer, Software

Shield AISan Diego, CA +3

Principal Engineer on Shield AI's elite Special Projects team (Office of the CTO) designing and leading generative AI user experiences to accelerate autonomy development for Hivemind. Requires 15+ years building large production systems and 5+ years React/full-stack web development; operates in ambiguity with travel 1-3 times per quarter.

220k – 330k
Remote15+ YOEFullstack Engineering
ZoomInfo

Senior Principal Software Engineer

ZoomInfoCalifornia

Architects scalable infrastructure for ZoomInfo's unified data platform using GraphQL federation across BigTable, BigQuery, and Solr. Drives real-time data processing, observability, and multi-tenant systems with 12+ years experience in distributed data platforms.

191k – 300k
Remote12+ YOEFullstack Engineering
Twilio

Principal Engineer

TwilioUnited States

Principal Engineer owning technical strategy for Twilio's Phone Numbers and KYC Compliance platform at massive global scale. Lead architecture modernization, pioneer AI-driven (LLM/agentic) development workflows, mentor engineers, and translate complex telecom regulations into developer-first APIs. Requires 16+ years building highly available distributed cloud systems.

188k – 277k
Remote16+ YOEFullstack Engineering
Typeface

Principal Software Engineer

TypefacePalo Alto, CA

Principal Software Engineer architects scalable AI systems using LLMs and multimodal AI for enterprise content generation. Leads cross-functional initiatives, mentors engineers, and ensures best practices in cloud-native, distributed systems. Requires 10+ years experience with 3+ in principal roles.

248k – 267k
Hybrid10+ YOEFullstack Engineering