mabl
Mabl sells AI-powered software testing tools that automatically create, run and fix tests for engineering teams. The Boston-based company has raised $76M, most recently in a 2021 Series C, and employs 111 people.
The growth story
mabl grew from 59 to 111 employees between 2021 and 2026, raising $76M along the way, most recently a Series C in November 2021.
About
Mabl provides automated testing software that integrates with existing development pipelines. Its AI-driven platform creates test coverage, monitors application quality, and self-heals broken tests, primarily serving engineering and QA teams at companies like Mercedes-Benz and JetBlue.
The company has maintained steady growth since its 2016 founding, reaching 111 employees. Its $76M in funding includes investments from Google Ventures and Vista Equity Partners, with its last major round closing in late 2021.
Founders and leadership
Engineering is Mabl's largest function, accounting for 26 employees. The company has a median employee tenure of 3 years, suggesting stable team retention.
The mabl org chart
Dan Belcher (Co-Founder) leads 40 mapped leaders with 8 direct reports. Click +N to expand a team; names link to the person’s public profile.
Departments, and which ones grew
Headcount by function: Sales 24 (-14% YoY), Engineering 23 (-12% YoY), Customer Success and Support 13 (+18% YoY), Information Technology 9 (0% YoY), Marketing 7 (0% YoY), Business Development 7 (0% YoY).
Talent flow
Mabl recruits heavily from Dell Technologies and Kobiton, with 5 hires from each. Its alumni frequently move to testing-focused startups like CodeRabbit and QA Wolf, with 4 joining CodeRabbit alone.
Most common previous employers of mabl staff: Dell Technologies (5), Kobiton (5), Google (4), SmartBear (4), Stackdriver (3), VMware (3). Former mabl employees most often moved to CodeRabbit (4), QA Wolf (2), Amazon Web Services (AWS) (2), CloudZero (2), Chainguard (2), 3Play Media (2).
Alumni worth knowing
The mabl mafia
Five Mabl alumni have founded companies, including Parrot Finance, which has grown to 13 employees, and VSND, a 3-person startup.
5Victoria Yang, was Product until 2020John VanderSande, was Head of Technical Talent until 2023Kuhu Singh, was Demand Generation Manager until 2023Andrew Mendelsohn, was Senior Software Engineer until 2021Web traffic
Traffic mix: 36% direct, 32% search, 1% social, 20% paid.
What this company is made of
Most common skills at mabl: Microsoft Office (36), Leadership (34), Customer Service (33), JavaScript (30), Management (28), Microsoft Excel (27), Java (25), SQL (24).
Where the team actually sits
mabl people are concentrated in Massachusetts, United States (21), Greater Boston (13), Florida, United States (5), Georgia, United States (5).
Search footprint
mabl attracts about 2,408 organic search visits a month, traffic worth roughly $29K a month if bought through ads. It gained 505 ranking keywords and lost 737 in the last period.
What employees say
- Compensation
- 3.90 / 5
- Career opportunities
- 3.70 / 5
- Senior management
- 3.70 / 5
- Work-life balance
- 3.90 / 5
Frequently asked
mabl has 111 employees as of September 2026.
mabl has raised $76M in total, most recently a Series C round in November 2021.
mabl was founded in 2016 by Dan Belcher.
Dan Belcher (Co-Founder) sits at the top of mabl's reporting structure, with 8 direct reports.
The most common previous employers of current mabl staff are Dell Technologies (5 people), Kobiton (5 people), Google (4 people).
Former mabl employees most often move to CodeRabbit (4), QA Wolf (2), Amazon Web Services (AWS) (2).
At least 5 companies have a founder who previously worked at mabl, including Parrot Finance, VSND, Amber.
mabl attracts about 2,408 organic search visits a month, worth roughly $29K a month in equivalent ad spend.
The most common skills among mabl staff are Microsoft Office, Leadership, Customer Service, JavaScript, Management.
mabl staff are concentrated in Massachusetts, United States (21), Greater Boston (13), Florida, United States (5).
mabl has about 24 people in Sales, down 14% over the past year, as of September 2026.
mabl has about 23 people in Engineering, down 12% over the past year, as of September 2026.
Computed from 79 current and 163 former mabl profiles, as of September 2026. Source: Crustdata.
Build this for any company
Every number on this page came from the Crustdata API. Point the MCP at a company and get the same org chart, alumni list and talent flow in one prompt.