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Gusto (ZenPayroll, Inc.)

Cloud PayrollFounded 2011
Reviewed by Swet Parvadiya
Company data updated: October 2026

Founders

Who Founded Gusto?

Joshua Reeves, Tomer London, Edward Kim · Founded 2011 · HQ today: San Francisco, California, United States

Who founded Gusto?

Gusto was founded by Joshua Reeves, Tomer London, Edward Kim in 2011. It is now led by Joshua Reeves.

Founders
Joshua Reeves, Tomer London, Edward Kim
Founded
2011
Headquarters
San Francisco, California, United States
Number of founders
3
Current CEO
Joshua Reeves (since 2011)
Where was Gusto founded?
Gusto was founded in San Francisco, California in 2011.
When was Gusto founded?
Gusto was founded in 2011.
Who started Gusto?
Gusto was founded by Joshua Reeves, Tomer London and Edward Kim.
How old is Gusto?
Gusto is 15 years old as of 2026.

Founding Story

Josh Reeves, Tomer London and Edward Kim started ZenPayroll in 2011 after experiencing how manual and paper-heavy payroll was for small companies, including in Reeves's own earlier startup. They went through Y Combinator, launched publicly in 2012 and spent the early years building tax filing coverage state by state before rebranding as Gusto in 2015 and adding benefits.

Background

Stanford electrical engineering graduate who co-founded an earlier startup before ZenPayroll.

Role at Gusto (ZenPayroll, Inc.)

Josh Reeves co-founded ZenPayroll, now Gusto, in 2011 and has been CEO ever since. He led the 2015 rebrand and expansion into benefits, the 2021 Series E, the 2025 Guideline acquisition and the company's growth past $1 billion in revenue in early 2026. He is known for a values-driven culture, including Gusto's shoes-off office tradition, and has said he spends little time thinking about an IPO. (Exact birth year remains publicly undisclosed).

Background

Software engineer and Stanford graduate.

Role at Gusto (ZenPayroll, Inc.)

Tomer London co-founded Gusto (then ZenPayroll) in 2011. While studying at Stanford, he met his co-founders and realized that the software used to pay employees at small businesses was incredibly archaic and painful to use. As Chief Product Officer, he designed the highly intuitive, delightfully simple user interface that allowed Gusto to completely disrupt legacy giants like ADP. (Exact birth year remains publicly undisclosed).

Background

Software engineer and Y Combinator alum.

Role at Gusto (ZenPayroll, Inc.)

Edward Kim co-founded Gusto in 2011. Before Gusto, he had developed a highly successful photo-sharing app, but struggled immensely with the complexity of running a real business and paying employees. As Chief Technology Officer, he architected Gusto's highly complex backend, ensuring it could perfectly calculate incredibly convoluted state and federal tax codes without error. (Exact birth year remains publicly undisclosed).

Gusto (ZenPayroll, Inc.): CEO & Leadership History

Full timeline →

Joshua Reeves

Chief Executive Officer & Co-Founder

2011 – Present

As Co-Founder and CEO, he scaled the company from a Y Combinator startup into a massive $9.5 billion fintech behemoth that processes tens of billions in payroll annually.

Tomer London

Co-Founder

2011 – Present

As Co-Founder and CPO, he ensures the platform remains incredibly intuitive, preventing the severe software bloat that characterizes legacy competitors like Paychex.

Edward Kim

Co-Founder

2011 – Present

As Co-Founder and CTO, he built the absolute core technical infrastructure that guarantees 100% accuracy in Gusto's automated tax compliance engine.

Keep researching Gusto

Who Founded Gusto? FAQ

Who are the three co-founders of Gusto and what are their professional backgrounds?

Gusto was founded in 2011 in San Francisco, California, by three entrepreneurs and software engineers: Joshua Reeves (Stanford CS/EE, founder of Unwrap), Edward Kim (Stanford CS, former lead engineer at Box), and Tomer London (Technion and Stanford CS graduate).

What inspired the founders to create ZenPayroll (Gusto) in 2011?

Having watched their own parents and family members struggle with clunky, punitive legacy payroll software in their small businesses, the founders realized that processing payroll was universally hated. They decided to rebuild payroll from the ground up as a modern, cloud-native, empathetic service.

What was the significance of the founders' participation in Y Combinator (Winter 2012)?

Accepted into the Y Combinator W12 batch under the name ZenPayroll, the founders built their initial prototype in a shared house in Palo Alto, launching in California to overwhelming praise for their clean user interface and direct electronic tax filing automation.

How did the founders assemble one of the most prestigious angel investor rosters in Silicon Valley history?

In December 2012, the founders raised a well-known $6.1 million seed round backed by a 'who's who' of tech founders, including the CEOs of Dropbox (Drew Houston), Box (Aaron Levie), Yelp (Jeremy Stoppelman), Yammer (David Sacks), Stripe (Patrick Collison), and early executives from Google and PayPal.

What role did Edward Kim play as Chief Technology Officer in architecting Gusto?

Edward Kim architected Gusto's core distributed payroll calculation engine, automated direct deposit ACH batch processing pipelines, and electronic state tax filing systems, ensuring 99.99% reliability and zero tolerance for calculation errors across millions of payroll runs.

How did Tomer London design Gusto's signature user experience and human touch?

Tomer London focused on product design and behavioral psychology, introducing warm celebratory elements (such as personalized payday celebration emails and digital thank-you notes between employers and employees) that transformed payroll from a cold chore into a joyful moment.

Why did the founders rebrand the company from ZenPayroll to 'Gusto' in 2015?

In September 2015, the founders rebranded from ZenPayroll to 'Gusto' (a word meaning enjoyment, enthusiasm, and energy in doing something) to reflect the company's expansion beyond payroll into a complete people platform encompassing health insurance, HR, and employee benefits.

What foundational values did the founders establish in Gusto's corporate DNA?

The founders established five core company values: 'Ownership mentality', 'Don't optimize for the short term', 'We are all builders', 'Go the extra mile', and 'Be proud of the work you do', which continue to guide all product engineering and customer service decisions.

Who founded Gusto?

It was founded by Joshua Reeves, Tomer London, and Edward Kim. All three were highly elite electrical engineers from Stanford University. Instead of building a flashy social media app, they brilliantly chose to solve one of the most painfully boring, complex, and highly regulated problems in business, securing massive long-term retention.

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Content is for informational purposes only. Not financial advice. Data sourced from SEC filings, annual reports, and public records. See our full disclaimer and methodology.