Functionizerevenue & funding

Automation Testing156-2nd Street, San Francisco, CaliforniaFounded 2015CEO Tamas Cser

Functionize makes an agentic software-testing platform: its Studio agent creates, runs and maintains end-to-end tests of web applications and checks that each release, including AI-written code, works as the team intended.

functionize.com LinkedInUpdated Oct 29, 2026

Annual revenue: $17.3M; Jun 2024EST
Latka List: #283; of 1,301 interviewed companiesEST
Total raised: $57M; 2 rounds
Employees: 95; Oct 2024
Customers: 36

Functionize revenue

Functionize has not published its revenue. GetLatka estimates it at about $17.3M a year (June 2024). Functionize is #283 on the Latka List, level with one other. The list ranks the 1,301 companies Nathan Latka has interviewed by revenue.

$5M

$10M

$15M

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$17.3M

20152016–232024

ReportedEstimateFounded 2015 at $0; every reading has its own bar

As of	Revenue	Source
Jun 2024	$17.3MEST	GetLatka estimate

Functionize funding rounds & investors

Functionize has raised $57M across two rounds since 2019. The latest was a $41M Series B in August 2025, led by Mumford Investments and LHH Investments.

Date	Round	Raised	Led by	Source
Aug 2025	Series B	$41M	Mumford Investments and LHH Investments	PR Newswire
Mar 2019	Series A	$16M		–
	Total raised	$57M

Interviews with Tamas Cser

Nathan Latka has interviewed Functionize once, speaking with Tamas Cser. Each figure links to the second it was said.

Watch

Tamas Cser, Co-Founder and CEO

How Functionize Reached About 36 Customers and $16M Raised with an AI-Powered Testing Platform (Interview with Tamas Cser)

CustomersAbout three dozen (36)Watch at 10:32
Revenue per userStarting at around $5,000 per month (a floor, not an average)Watch at 3:22
CAC payback (months)About 8 months (at the beginning of 2019; he says the model has moved since)Watch at 14:58
EmployeesAbout 35 in the US (plus an office in Noida, India; its headcount not given)Watch at 13:20
Engineers22Watch at 13:08
Sales reps3Watch at 14:03
+1 more

Read the interview Watch

Functionize CEO, founders & employees

Tamas Cser founded Functionize in 2015 with Ray Grieselhuber and runs it as CEO. Functionize had 95 employees (October 2024, LinkedIn).

Tamas CserCo-founder & CEO
1 interview
Ray GrieselhuberCo-Founder

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2018201920202021–232024

ReportedOne figure per year; a reported figure wins over an estimate

All 5 headcount readings, with sources

As of	Employees	Source
Oct 2024	95	LinkedIn
Dec 2020	95	–
Jun 2020	89	–
2019	About 35	Tamas Cser on cameraWatch at 13:20plus an office in Noida, India; its headcount not given
Dec 2018	59	–

Functionize FAQ

What is Functionize's revenue?

GetLatka estimates Functionize's revenue at about $17.3M a year (June 2024). The company hasn't published its own figure.

How much funding has Functionize raised?

Functionize has raised $57M across two funding rounds. The latest was a $41M Series B in August 2025, led by Mumford Investments and LHH Investments.

Who owns Functionize?

Functionize is privately held. Its lead investors include Mumford Investments and LHH Investments.

How many employees does Functionize have?

Functionize had 95 employees in October 2024, according to LinkedIn.

Who is the CEO of Functionize?

Tamas Cser is the CEO of Functionize and co-founded the company in 2015. Nathan Latka interviewed Tamas Cser.

Who founded Functionize?

Ray Grieselhuber and Tamas Cser founded Functionize in 2015.

How this page is sourced

8 said on camera · 2 from public sources · 1 estimate. Founder figures link to the second they were said; public figures name their source; estimates are marked EST and say whose they are. Not financial advice. The Latka List ranks the private, operating companies Nathan Latka has interviewed by the latest revenue figure on each profile, reported or estimated; equal figures share a rank.

Updated Oct 29, 2026Data disclaimer Report a correction Claim this profile