Who is Green Mountain Lion Corporation?

Kristie Stern

President & Managing Partner

Kristie Stern, Managing Partner of Green Mountain Lion Corp, brings a wealth of expertise to talent search & acquisition, providing top notch client services. Her many years in sales & marketing have given her an insider’s understanding of best practices. Kristie employs her bachelor’s degree in Psychology from Emory University focused on non-verbal communication to ensure a solid candidate and client match. She has worked to conduct searches for multinational companies all the way to smaller niche players across a variety of industries including Agriculture, Construction, Industrial, and Manufacturing. Her dedication to providing the highest quality of customer service shows in the longstanding and positive relationships she has with her clients and candidates. 

When Kristie isn’t meeting new people, she enjoys spending time with her husband and two kids, reading, working out, and traveling


Sara Kopac

Recruiting Manager

Sara joined Green Mountain Lion Corporation as a Recruiting Manager in early 2016, and immediately began building a network of professionals in the construction, agricultural, and outdoor power industries. She recruited for her own customer support team’s candidates in her prior role at a website design company. She had exposure to the construction industry through her father’s career.  In 2002 and again in 2018, Sara helped her parents build their new home, getting a hand in everything from land clearing and foundation tarring to raising walls and installing insulation.

Sara lives north of Boston, MA with her husband and puppy, and they can be found making home cooked, healthy meals, hiking, or working on home renovation projects.

Kate Ziek

Recruiter & Strategic Accounts Manager

Kate is a Recruiting Manager, specializing in Construction, Agricultural Machinery and Cranes. Her competitive drive and passion for building winning teams started long before joining the GMLC team with her robust background in sports and leadership. Her Masters in Organizational Leadership, paired with her decisive nature, allow her to quickly identify and place top performing industry professionals. 

Kate, a Canadian native, lives in Georgia, VT, with her husband, two kids and animals on their small family farm. She is an avid Toronto Maple Leafs fan, poutine expert, and outdoor enthusiast.


Kristen Geissler


Kristen is a Recruiter, specializing in construction and agricultural machinery.  Prior to her arrival at GMLC, Kristen was a collegiate coach for 23 years where her primary focus was recruiting competitive and enthusiastic athletes to succeed at the highest level of athletics and academia. That wealth of experience and knowledge in identifying matching personalities and advanced skill sets allows Kristen to place top performing talent in long lasting relationships with industry leading companies. 

Kristen, born in Reading, PA, lives in Pawley’s Island, SC with her two daughters and three dogs. She enjoys time on the beach, fishing, golfing, and running. 

Sean Parker


Sean is a Recruiter specializing in renewables, energy storage and HVAC-R. He has a passion for a clean environment and a green grid. Prior to joining the GMLC team, Sean worked as a meteorologist for several television stations across the country, forecasting the weather and teaching kids about STEM careers. Sean’s background as a well traveled meteorologist helped him to build an established network of engineers and other renewable energy professionals.

Sean lives north of Burlington, VT with his wife and their dog, Carter. They are all avid runners and they enjoy spending time outdoors. Sean and his wife love to fish, either from their vintage aluminum boat or through the ice. They’re always looking for the next master angler lake trout.

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