Our Story

ExakTime was built almost 20 years ago by a contractor who was losing money because he could not be on site all the time. Inaccurate, missing, and even false time cards were killing his business (and his mood). Today ExakTime’s mobile, cloud-based solution is the leader in construction workforce management because of its continued ease of use, constant technical evolution, unmatched U.S.-based support, and seamless integration with payroll programs.

The Arcoro Difference

ExakTime is a proud member of the Arcoro Group, the premier provider of proven workforce management and human capital management solutions for high Consequence, high Compliance Industries offering easily integrated software for the construction and the field service industries.

An AGC Affiliate Partner

As a natural partner for the Associated General Contractors of America, ExakTime is pleased to serve several hundred of AGC’s current members—and to offer new customers with AGC membership exclusive rates on our time and attendance tracking.

ExakTime Leadership

John O’Hara

President & CEO

John O’Hara came to ExakTime in 2006 after 20 years in the Aerospace and Telecommunications industries in various management positions. The majority of John’s earlier career was at the Skunk Works division of Lockheed Martin, where he had key roles in the production and support of the F117A Stealth Fighter Program. John is a tennis and softball enthusiast and enjoys camping trips with his family.

Casey Powers

VP of Marketing

A seasoned entrepreneur, Casey Powers arrived at ExakTime in 2010 with over 15 years experience as marketing guru at his own and others’ successful startups. Casey draws on his past success to create memorable advertising campaigns that throw the spotlight on ExakTime’s peerless products. Casey is also an outdoors junkie who enjoys mountain and road biking.

Wayne R. Wise

VP of Development

After completing military service and college, Wayne R. Wise joined the ExakTime team in 2005. Wayne brought diverse technology experience and leadership skills to the development team, transforming our products by incorporating Agile methodologies and leading edge technology. Wayne spends his leisure time in the gym or riding bikes with his family.

Karen Williams

Finance & HR Director

Karen Williams came on board in 2013 with 20+ years of experience in manufacturing, software, and construction. She oversees financial matters while also managing talent recruitment as well as employee engagement and retention. Under Karen’s direction, the finance team has more than doubled to support the company’s growth. In her free time, Karen likes reading, boating and spending time with family.

Tom Zeliff

Director of Customer Success

Tom Zeliff brings over 15 years of Customer Success and Operations experience from companies such as Verizon, Ring, and OmniUpdate. His sharp eye for detail, customer experience, and strategic planning enable him to help organizations scale while staying focused on the customer. Outside of work you can find Tom at amusement parks with his family and a camera in hand.


The ExakTime headquarters is located in Calabasas, California, while our talented Development Team works out of Granger, Indiana. ExakTime also owes its success to the hard work of our remote employees found in a range of locations throughout the country.


Award Winner


Inc. 5000
Award Winner

2013, 2014, 2015, 2016

Award Winner

2012, 2013, 2015, 2016, 2019

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