Full-Time

Backend Software Engineer

Mosey

Mosey

1-10 employees

Compliance platform with payroll integration

Compensation Overview

$150k - $195k/yr

+ Equity

Remote in USA

Remote

Remote-first role; eligible to work from the continental US and Canada.

Category
Software Engineering (1)
Required Skills
Git
Docker
REST APIs
DevOps
Requirements
  • 5+ years of hands-on experience as a software engineer
  • Strong collaboration skills and excellent communication (written and verbal)
  • A combination of technical ability and a deep understanding of what makes a great product
  • Ability to solve novel problems and think critically about the best solutions
Responsibilities
  • Build tools and automation that helps users manage employment compliance
  • Integrate APIs and build data pipelines
  • Build API endpoints to support applications and partners
  • Design, implement and iterate new features from scratch
  • Help synthesize user feedback and use it to inform future development
  • Lay the groundwork for future engineering and product development
  • Set up initial infrastructure and continuous integration workflows
  • Work closely with the founder and founding team to build prototypes and MVPs
Desired Qualifications
  • You want your work to have a positive impact and create economic opportunity
  • You have experience working at a startup or led a new project from scratch
  • You have expertise in Python, Postgres, SQLAlchemy, FastApi, and mypy
  • You are excited about the opportunity to learn new things and go beyond engineering
  • You embody urgency and focus, but also have an exacting standard of quality
  • You like to build systems and processes from the ground up

Mosey is a cloud-based platform that helps businesses stay compliant with employment and tax rules across multiple states and federal requirements. It integrates with payroll providers and centralizes compliance tasks so companies can manage regulations from one place. The platform is quick to set up and supports a subscription model, including features like reviewing state agency notices, providing mandatory labor law posters, and offering AI-driven answers to compliance questions. Unlike providers that require expensive professional services, Mosey focuses on being an affordable, easy-to-use solution that scales as a company expands into new jurisdictions. Its goal is to make running a business in multiple locations frictionless by saving time and reducing compliance costs.

Company Size

1-10

Company Stage

Late Stage VC

Total Funding

$24M

Headquarters

San Francisco, California

Founded

2021

Simplify Jobs

Simplify's Take

What believers are saying

  • Gusto's 400,000 customers enable massive cross-sell of Mosey features.
  • Mosey API partnerships with Gusto and Stripe expand revenue streams.
  • Small businesses' $14,700 per-employee compliance costs drive demand.

What critics are saying

  • Gusto erases Mosey's standalone brand within 3-6 months.
  • Gusto captures Mosey's market, halting independent growth in 6-12 months.
  • Mosey talent exits to Rippling in 12-18 months, delaying rollout.

What makes Mosey unique

  • Mosey automates compliance across all 50 states and 100+ cities.
  • Mosey integrates with payroll providers for seamless multi-jurisdiction management.
  • Mosey uses AI to resolve notices and provide real-time compliance alerts.

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Benefits

Health Insurance

Dental Insurance

Vision Insurance

Paid Vacation

Paid Holidays

Paid Family Leave

Remote Work Options

Company Equity

Stock Options

Company News

Finovate
Apr 9th, 2026
Gusto acquires Mosey to add compliance capabilities.

Gusto acquires Mosey to add compliance capabilities. * Gusto acquired compliance platform Mosey to embed small business compliance tools into its payroll and HR platform. * The purchase allows Gusto to integrate state and local business registration, filings, and ongoing compliance directly into its platform that serves 400,000 small businesses. * Mosey will help Gusto attract compliance-first customers while adding value via new upsell opportunities. Payroll, benefits, and HR management solutions company Gusto has acquired business compliance platform Mosey. Financial terms of the deal were not disclosed, but Gusto plans to leverage Mosey to help its customers manage their compliance obligations. Mosey was founded in 2021 to help small business owners avoid common compliance pitfalls such as hiring without the right legal setup, configuring payroll incorrectly, and missing tax deadlines. "I started Mosey because I'd made every compliance mistake myself, and then I watched thousands of other businesses make the same ones," said Mosey Founder Alex Kehayias. "The problem isn't that small business owners don't care about compliance, it's that they shouldn't have to become experts in it. Joining Gusto means we can bring that vision to the millions of small businesses that need it most." "Building a business is hard enough without compliance getting in the way," said Gusto Co-Founder and Chief Product Officer Tomer London. "With Mosey now part of Gusto, we can do what Gusto has always done: take complexity off the plate of small business owners so they can focus on what they actually started their business to do. This is a natural extension of our vision to be the platform that helps small businesses start, hire, and grow." Acquiring Mosey will allow Gusto to offer state and local registration, filings, renewal, and ongoing compliance management directly within its own platform. Once integrated, Gusto's 400,000+ small business clients will be able to hire, pay their teams, and manage their compliance obligations from a single place. Specifically, Gusto will add: * State and local business registrations * Entity management, ongoing filings and renewals * Resolving agency mail * Real-time surfacing of new compliance obligations as businesses grow or expand to new states Strategically, Gusto will be able to use Mosey's technologies to attract clients seeking compliance strategies, but not necessarily HR capabilities. Additionally, it will allow Gusto to cross-sell Mosey's compliance capabilities to its existing customer base. This is another case of "rebundling" fintech, in which fintech platforms are piling on more capabilities to their long-standing platforms in order to add value and create a broader, more encompassing ecosystem for clients. The deal comes eight months after Gusto acquired retirement specialist Guideline to offer 401(k) retirement plans through its platform. Gusto, originally known as ZenPayroll, was founded in 2011 and provides a cloud-based payroll, benefits, HR management, and business financial management solution. If the San Francisco-based company continues down its current path of expansion, it may eventually offer corporate credit cards and business banking tools.

PR Newswire
Apr 9th, 2026
Gusto acquires AI compliance platform Mosey to tackle $14.7K per-employee burden on small businesses

Gusto has acquired Mosey, an AI-powered business compliance platform, to expand its services beyond payroll and HR. The acquisition will integrate state and local registration, filing and ongoing compliance management into Gusto's platform, serving its more than 400,000 small business customers. Small businesses face significant compliance challenges, with firms under 50 employees spending approximately $14,700 per employee annually on compliance costs—20% more than large enterprises. Each new hire in a different state can trigger multiple registration and filing requirements across various agencies. Mosey was founded by Alex Kehayias after experiencing compliance difficulties firsthand. The combined platform will offer state and local business registrations, entity management, and real-time compliance alerts as businesses grow. Gusto Business Compliance is expected to launch later this year.

World City Press
Sep 27th, 2023
Mosey Launches API for State Compliance, Partners with Gusto, Stripe, and Sequoia Consulting Group

Mosey also announced the Mosey API, a seamless way to integrate state compliance capabilities.

Mosey
Mar 2nd, 2023
Starting a Remote Company the Right Way: A New Guide From Mosey and Stripe

Mosey is thrilled to announce the launch of Guide to Starting a Remote Company created in partnership between Mosey and Stripe.

intelligence360
Jun 24th, 2022
San Francisco California based Mosey Works is raising $20,999,988.00 in New Equity Investment.

San Francisco, CA - According to filings with the U.S. Securities and Exchange Commission, Mosey Works is raising $20,999,988.00 in new funding. Sources indicate as part of senior management Chief Executive Officer, Alexander Kehayias played