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Arena was founded by Michael Rosenbaum in 2009, but its roots began long before. During his time at Harvard and at the White House working in economics and law, Mike saw how inefficient the labor market could be because it was based on subjective perceptions of a candidate’s future performance. By applying and analyzing data to create more accurate predictions of a candidate’s performance, Mike argued that communities and labor markets could solve a host of problems. In 2001, he decided to put his theory into practice. Mike assembled a team to develop an analytics engine for selecting candidates based on the actual determinants of high performance. In order to test this engine, Mike used it to build a technology company, Catalyst DevWorks, which has since proven his theory, realizing substantial growth, garnering press from the likes of the Wall Street Journal and CIO magazine, praise from analysts and experts in IT including the leading analyst firm Gartner, and client accolades from organizations including Nike and L’Oreal. By 2009, enough data and results had been collected to deploy this engine – Arena - more broadly. Armed with this proof, Arena teamed up with Shady Grove Adventist Hospital. The goal was 20% turnover reduction. In fact, turnover decreased by 58%. After the Arena algorithms had an opportunity to learn, this improvement increased to 77%. Today, the Arena team serves a broader set of healthcare organizations, applying modern technology and data tools to workforce construction and talent identification helping to reduce turnover by at least 40%. ... Show more
HQBaltimore, US
Employee Ratings3.8

Latest Updates

Employees (est.) (Apr 2018)309(+5%)

Key People/Management at Arena

Myra Norton

Myra Norton

President and COO
Chris Kottke

Chris Kottke

Michelle Ye

Michelle Ye

Vice President of Data Science
Cyrus David

Cyrus David

Vice President of Product
Owein Reese

Owein Reese

Vice President of Engineering
David Leonard

David Leonard

Senior Vice President
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Arena Office Locations

Arena has offices in Baltimore and New York
Baltimore, US (HQ)
2200 502 S Sharp St
New York, US
175 Varick St
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Arena Financials and Metrics

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Founding Date


Arena total Funding

$16.8 m

Arena latest funding size

$7.50 m

Time since last funding

4 years ago

Arena investors

Arena's latest funding round in January 2015 was reported to be $7.5 m. In total, Arena has raised $16.8 m
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Arena Online and Social Media Presence

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Arena Blogs

Arena’s postgresql client library PGX at the NYC OCaml Meetup

On October 25th, 2018, one of Arena’s engineers, Brendan Long, took to NYC to present our recently open-sourced OCaml postgres database library, PGX.Brendan spoke at length about the challenges of writing reusable library code and testing it against the multiple concurrency implementations PGX suppo…

Meet the Team Series — Cyrus David edition

When considering a new job, people wonder, “Who will I work with? How will I be able to grow with them? Do I want to work with them?” We have designed our interview process to help answer these questions among others. But before you join us at Arena, we’d like to provide you with another way to meet…

A post-mortem at Arena

A problem that led to an innovationAn accidental deployment One morning, one of our engineers intended to deploy code to our staging environment, but chose an incorrect build plan and deployed it to the production environment. The deployed code came from an older branch with unfixed bugs. Within a f…

Arena Company Life and Culture

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Arena Frequently Asked Questions

  • When was Arena founded?

    Arena was founded in 2009.

  • Who are Arena key executives?

    Arena's key executives are Myra Norton, Chris Kottke and Michelle Ye.

  • How many employees does Arena have?

    Arena has 309 employees.

  • Who are Arena competitors?

    Competitors of Arena include Tap My Back, Interviewed and Zealify.

  • Where is Arena headquarters?

    Arena headquarters is located at 2200 502 S Sharp St, Baltimore.

  • Where are Arena offices?

    Arena has offices in Baltimore and New York.

  • How many offices does Arena have?

    Arena has 2 offices.