Management Team


John Duffin


John Duffin is President at Clarke Solutions and Acquire Automation, managing and directing business strategy and operations. Additionally, he sits on the board of The Clarke Companies, majority stakeholder for both corporations.

John has spent his entire career with The Clarke Companies. He started as an engineer executing projects for Fortune 100 Pharmaceutical clients; his first years were focused on obtaining experience in engineering, automation and validation. Over the years he continued to take on increasing roles within the organization. After continuing to gain increasing responsibility with Clarke Solutions clients and account management, John later accepted a position to start up the Acquire Automation portion of the business in 2007.

After successfully developing and sustaining Acquire as a leader in vision inspection and automation, John moved into a joint Clarke/Acquire Vice President role to further assist in management of the overall operations. Due to Chris Clarke’s, founder and original President, untimely passing, John was selected to assume the role of President for both Clarke and Acquire. John successfully led the transition of the companies through a tragic situation; continuing to grow and sustain The Clarke Companies as a leading provider of manufacturing, packaging, automation, and vision inspection solutions.

John provides leadership and experience within engineering, operations, sales and marketing. John is focused on the core of our business and setting the strategic vision for our team. His combination of technical and managerial background enables him to understand and support our clients by providing not just a service, but effective solutions.

Originally from Indianapolis, John earned a bachelor’s degree in Industrial Engineering with a minor in Management from Purdue University – West Lafayette. John resides in Noblesville with wife Amy, a graphic designer. They have a son and daughter, and are members of Holy Spirit at Geist Parish.


Ross McDonald


Ross McDonald is the Director for the Acquire Equipment Team, where he is responsible for acquiring new projects, leading the team in implementation, and leading development of new state of the art products. Ross initially began his career with Pepsi Bottling Group as a production supervisor before joining The Clarke Companies in 2006. The first couple years were spent on the Clarke Solutions side of the business working on line process improvements within Fortune 100 pharmaceutical client before joining the Acquire team.

Over his tenure with Acquire, Ross has helped to launch the Spectrum product and assisted in further standardizing our off the shelf vision solutions with standard packages for electrical and mechanical processes. Ross has developed strong technical sales skills along with providing an excellent background in industrial/mechanical engineering and leadership experience in manufacturing engineering and validation.

Ross grew up in a small town (Hillsboro, IN) and came from a family farm background. Ross earned a B.S. in Industrial Engineering with a minor in Management from Purdue University – West Lafayette.

HR Manager

Aimee Parrish


Aimee Parrish is the HR Manager for The Clarke Companies, Clarke Solutions and Acquire Automation. In her role, she has a strong knowledge in recruitment, employee relations, leadership and employee development, training, compensation and benefits.

Aimee joined The Clarke Companies in 2012. Before joining The Clarke Companies, she worked at Northwestern University in Evanston, IL. for 6 years, for the Athletics and Recreation Department. During her time at Northwestern she led various sports programs including the Club Sport Department comprised of 21 Big10 teams with over 800 participants, and the Wildcat Sports Camp.

Aimee earned her undergraduate degree in Sports Management with a minor in Business from Valparaiso University in 1992. She also has a master’s degree in Sports Management from the University of Iowa.

Originally from Mason City, IA., Aimee resides in Fishers, IN. with her husband Shawn and their two daughters, Lauryn and Sydney.


Kim Sohn


Kim Sohn is the Controller for The Clarke Companies, Clarke Solutions and Acquire Automation.

Kim joined The Clarke Companies in 2015. Before joining Clarke, Kim worked for more than 25 years in numerous leadership capacities as an Accounting professional. She brings to Clarke a diverse background that includes private industry, technology, consulting, contracting and federal agency experience.

Kim earned her Bachelor of Science degree from the University of Akron – Akron, OH.

Originally from Mentor, OH, Kim has spent the last 17 years in Indiana. She is married with two grown children and a stepson.


Christopher Clarke


Chris Clarke (December 10, 1968 – June 22, 2014) was Founder and President of The Clarke Companies, consisting of Acquire Automation and sister company Clarke Solutions (formerly Clarke Engineering Services or CES). Originally from Johannesburg, South Africa, Chris founded Clarke in 1997 after working as a project engineer for nine years at a major global pharmaceutical company in Indianapolis. He earned both a bachelor’s and master’s degrees in engineering from Michigan State University.

Chris founded Clarke because he saw a significant need for specialized manufacturing, packaging and validation expertise for regulated industries. Since its founding, Clarke has grown from a single employee firm to over 100 employees with continued annual growth.

His legacy at Clarke will carry on as we live to fulfill the mission of understanding customer needs and delivering premium solutions that consistently exceed expectations. Chris was passionate about engineering and worked hard to develop a family-focused company while still providing superior engineering solutions and services.

Chris was also a founder and board president of the Verbal Behavior Center for Autism in Indianapolis. His many passions included his beloved family, business, swimming, and cycling. He is survived by his wife, Jane Clarke, and two daughters and a son.