Our Experts

James Langley serves as the senior vice president of Trimble’s Transportation Sector and most recently served as general manager of its Enterprise business. He has been in the transportation industry for 25 years, garnering valuable experience from well-known organizations such as UPS, JB Hunt, US Xpress, and most recently as president of Dart Transit. In addition, Langley spent five years with TMW Systems leading its Business Intelligence and Optimization initiatives. A blend of experience in parcel, LTL, TL, intermodal, brokerage, and 3PL operations combined with years of focus on business analytics and logistics engineering give him a unique perspective on the transportation industry both as a technology provider and consumer. Langley received his bachelor’s degree in Transportation and Logistics from the University of Arkansas.

Aristides joined Trimble in 2015 as Vice President of Finance with over 25 years managing financial divisions for major corporations. Prior to Trimble, Aristides was the Chief Financial and Administrative Officer for SAFE Boats International where he played a key role in developing and executing in new markets including South America and Asia Pacific. Aristides is a high-impact, transformational leader with success leading global organizations, profitably growing businesses, increasing enterprise value, and driving operational excellence.

Elwyn McLachlan currently serves as sector vice president, Transportation Mobility. McLachlan has held several positions with Trimble over the past 25 years, most recently as director, strategy & corporate development, for Trimble MAPS (formerly ALK Technologies) where she was responsible for driving the strategic direction of the business. McLachlan has also served in Trimble’s Civil Engineering & Construction and Geospatial divisions.

McLachlan holds a bachelor of arts degree from University of Canterbury in Christchurch, New Zealand, and a master of business administration from University of Edinburgh.

Dan Popkin currently serves as sector vice president, global connected supply chain, for Trimble Transportation. Popkin is responsible for overseeing Trimble’s Shipper and Carrier Transportation Management System and Visibility businesses. Popkin is an avid customer and culture champion, and in his previous role, was the driving force behind the adoption of the Trimble MAPS commercial routing, scheduling, visualization, and navigation platform across a broad range of strategic partners and customers globally.

Popkin graduated cum laude from the Walsh School of Foreign Service at Georgetown University.

Randall Burrell currently serves as sector vice president of Product and Delivery for Trimble Transportation. Burrell has over 35 years of transportation and software experience, starting in 1985 as one of the founders of Trimble's TruckMate business. Burrell had experience in all aspects of the business, starting in Development, with stretches in Professional Services, Sales and Marketing, ending up as the General Manager of the TruckMate division.

Burrell moved to the Mergers and Acquisitions team in the corporate development side of Trimble for five years and then rejoined the Transportation sector in 2020 to take his current role, focused on delivering innovative solutions to Trimble's wide range of customers.

Shaun Callaghan currently serves as Sector Vice President, Transportation Sales. Callaghan has successfully managed multiple Trimble Transportation Sales teams over the past 19 years, most recently as Vice President Sales, Trimble Enterprise (formerly TMW Systems) where he was responsible for driving the sales strategy and growth of the business while also leading the Enterprise entrance into new markets in ANZA. Prior to joining Trimble, Callaghan's extensive industry experience included being involved in the management of several larger private fleets. Callaghan holds a Bachelor of Commerce degree from the University of KwaZulu Natal in Durban, South Africa and a Certificate of Logistics from the University of Pretoria.

Gretchen Rawdon currently serves as sector vice president, People eXperience. In her role, Rawdon is focused on ensuring Trimble's people solutions align with strategic business goals, including by leading people engagement and development initiatives, workforce and succession planning, internal communications, facilities, and Diversity, Equity and Inclusion activities for the sector. Rawdon has more than 20 years of experience in strategic human resources and organizational development, including at Smiths Group, a UK-based global engineering technology conglomerate, as well as at FedEx and PNC Financial Services.

Rawdon holds a bachelor's degree in Psychology and American Racial and Multicultural Studies from St. Olaf College and a master's degree in Organization Development and Instructional Design from The University of Iowa. She is a certified Senior Professional in Human Resources (SPHR) and a certified professional coach (PCC, CPCC).