Click on one of the people below to find out more information.

  • Larry Mackowski
    General Manager
    262-821-5000 ext 333

    Leading the Porsche team, Larry Mackowski has 20+ years of  experience with the International Autos group and believes customer satisfaction is the number one goal. As General Manager, his job is building a lasting relationship with all of his customers guaranteeing that their needs are met.

  • Jason Mayes
    General Sales Manager
    262-821-5000 ext 340

    As of 2023, this will be my 12th year in the luxury automotive business, and with Porsche since 2018. I truly believe that car deals shouldn't be hard, feel cringy, or take hours of back and forth. Porsche is one of the best brands in the world and I really enjoy the passion people have for the brand and its cars. I've worked almost every position in the dealership, and with my team, I want to make sure you have the best experience you can with integrity and transparency. 

    Weekly schedule is as follows:
    Monday: 9am-8pm
    Tuesday: Off
    Wednesday: 9-6pm
    Thursday: 9-8pm
    Friday: 9-6pm
    Saturday: 9-5pm
    Sunday: Off

  • Zach Zarder
    Service Manager
    262-821-5000 ext 364

    Zach has been in the automotive business since 2010 and has been with Porsche Waukesha since 2016. He has been an avid automotive enthusiast his entire life. When he is not in the office you can find him driving through the kettle moraine or participating in the occasional autocross or track day with his Cayman.

  • Tammy Jund
    Finance Manager

  • James Andritsos
    Certified Parts Manager
    262-821-5000 ext 325

    Jamie has been in the automotive industry for the last ten years, half of those being with Porsche. He enjoys getting to know visitors to the dealership and learning about them and their vehicles. Outside of work, you can find him out for a drive or in the gym.

  • Aaron Harmon
    Certified Brand Ambassador
    262-821-5000 ext 373

    Aaron was introduced to the Porsche team in March of 2018 and quickly fell in love with the brand and the people. He's a car enthusiast who is excited to see new vehicles arrive as well as building relationships with guests entering the dealership. Aaron also loves spending time at the track in his 997 Carrera S and on the water as a skier for the Muskego Waterbugs Showski team. 

  • Jeff Friess
    Certified Brand Ambassador
    262-821-5000 ext 336

    In November 2017, what began his day by visiting his local Porsche dealer for a simple oil change ended up being a life-changing event for Jeff. He decided that day to leave his career in enterprise software sales to extend his passion for Porsche and grow the brand in SE Wisconsin. Today, he enjoys the excitement of his customers fulfilling their dreams while doing everything in his power to provide an experience that is truly extraordinary. Jeff enjoys time with his wife, children, three precious granddaughters, and attending Packer and Marquette games. He's also a Porsche enthusiast who takes his work home with him!  SouthEast Wisconsin roads were made for Porsche passion, and Jeff drives his car from the Kettle Moraine to Door County.

  • Kelsie Kuehl
    Porsche Pro
    262-821-5000 ext 350

    Kelsie has always been a car enthusiast that loves the Porsche brand. She joined the team in 2022 and became the first face you see entering the dealership, to the last hand you shake driving away with your new vehicle. Since then her love for Porsche has grown and wants to continue creating relationships with everyone. Kelsie also enjoys spending her freetime doing photography with vehicles or working on her personal project car

  • Jakub Papciak
    Certified Porsche Gold Technician

    All throughout his childhood Jakub always knew he would spend his adult life with a wrench in his hand but the privilege of becoming a Porsche Gold Certified technician has surpassed all of his wildest ambitions. After a decade in the auto industry and over half of that with Porsche Waukesha he continues to come to work every day eager to get under the hood and behind the wheel of every vehicle that visits the facility.

  • Mike Golownia
    Porsche Technician

  • Tim Zeirke
    Certified Gold Technician

    Tim got the bug to work on cars from his Dad at an early age. He starting working on car professionally in 2002. After graduating from Universal Technical Institute He started working on Volkswagens. After achieving Master status with VW, he switched to Porsche in 2009. Tim has become a Gold Certified Porsche Technician and was a finalist in the 2017 Porsche Technician Challenge.  In his free time, Tim enjoys spending time with his family, hunting and aviation.

  • Mike Pinkerton
    Certified Brand Ambassador
    262-821-5000 ext 312

    This is my first experience selling Cars.  Start at the top!  For the past 25 years I have sold Software and Automation to hospitals. I have a great passion for all cars.. Buying, selling and restoring cars all of my life.  They are in my blood. Talking cars is one of my favorite pastimes.  I look forward to meeting you.