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Sales Team

Our professional Regional Managers work with you and support our distributors worldwide.

Jack Latchinian

Jack Latchinian

Western Region Manager

Jack Latchinian has been directly involved in optical surface metrology since 2008 and joined 4D Technology as the Western Region Manager in 2013.

Jack graduated from the University of La Verne in 1992 with a Bachelor’s of Science degree in Optical Engineering. He started working for Physical Optics Corporation in Torrance, CA, in 1993 as an optical engineer, working in holography and later with the production of Light Shaping Diffusers. After Physical Optics, Jack worked for Melles Griot (Photonics Group in Irvine, CA), transitioning responsibilities to Sales and Marketing and becoming a Regional Sales Manager for the Photonics Group. He has also worked for ADC Telecom (St. Paul, MN), Optoplex Corporation (Fremont, CA), Auxora (Baldwin Park, CA), MEMS Optical (Huntsville, AL), and Zygo Corporation (Middlefield, CT).

Jack has been an active member of the Optical Society of Southern California (OSSC) for many years, and has been an OSSC officer since 2009.

Greg Maksinchuk

Greg Maksinchuk

Southwest and Asia Region Manager

Greg Maksinchuk has worked in optical metrology for over 20 years, with expertise in both large aperture and surface profiling metrology systems. He started his career in optics at WYKO Corporation, staying with the organization for 15 years as it transitioned to Veeco Metrology and later Bruker Nano-Sciences.

Greg’s diverse background includes field service/technical support, product management (both marketing and engineering), design/test engineering, and sales/applications.

Greg received his BS degree in Mechanical Engineering from Northern Arizona University in 1994.

John Swienton

John Swienton

East Coast Region Manager

John Swienton has joined 4D technology as the East Coast Region Manager in September of 2018.

John has over 28 years of experience in optics, lasers, and optical fiber industries. His work started while completing an Optical Engineering degree from University Of La Verne in 1992. John worked for some of the biggest names in optics, including Omnichrome, MetroLaser, Newport Corporation, Trumpf, Melles Griot, Exfo and JDSU/Viavi. John has deep experience in assembly and test, engineering, applications, and training, which assisted him in his 20 years in sales, helping both technicians and CEOs.

RJ Mattern

RJ Mattern

Southeast/Midwest Region Manager

RJ Mattern joined 4D Technology with more than 14+ years of experience in optics and interferometry. Having served in Technical Sales, Business Development, and Applications Engineering roles for worldwide organizations, RJ leverages his industry experience and technical background to help customers overcome metrology hurdles. RJ holds degrees in Organic Chemistry, Biochemistry, and Molecular Biology from Michigan State University.

Stephen Martinek

Stephen Martinek

Director of Sales and Marketing

Steve Martinek brings to 4D Technology over thirty years experience in optical engineering, surface metrology, product development and marketing.

He joins the company following 15 years with WYKO Corporation (now a subsidiary of Bruker, Inc.) where his responsibilities included product management for various interferometer systems, applications and product development, manager of technical and customer service, and sales and marketing. While he served there as VP of International Sales, Steve managed a network of 16 distributors in 25 countries. Prior to WYKO, he was employed by the TRW Space and Technology Group, and by Pacific Sierra Research, performing optical systems tests and analysis.

Steve received degrees in Physics (BS – 1973, MS-1975) from the University of Illinois and an MS (1980) in Optics from the Optical Sciences Center at the University of Arizona.



4D Technology

3280 E. Hemisphere Loop, Suite 146
Tucson, AZ 85706

520-294-5600 (Voice)
8:00am – 5:00pm AZ MST, Mon-Fri

4D Technology is an Onto Innovation Business 

Get In Touch

(520) 294-5600


3280 E Hemisphere Loop, Ste 146
Tucson, AZ 85706


Office Hours (Arizona Time)

Mon: 8am – 5pm
Tue: 8am – 5pm
Wed: 8am – 5pm
Thur: 8am – 5pm
Fri: 8am – 5pm
Sat: Closed
Sun: Closed

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