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.

  • Kelsie Kuehl
    Porsche Pro

  • Lindsey Sommerfelt

  • Jeff Friess
    Certified Porsche Brand Ambassador
    262.821.5000 ext 336

    Mondays, 9-8. Tuesday, Off. Wednesday, 9-8. Thursday, 9-8. Friday, 9-6. Saturday, 9-5.

    Jeff joined the team following 30 years of enterprise software sales experience where he helped customers transform their businesses into the digital world.  He now enjoys being part of the transformation occurring in the automotive industry with the emergence of E-Performance and one day plans to teach his granddaughters how to shift the manual transmission of a Porsche 911. He has passion for providing an extraordinary experience with every customer that he has the privilege to work with.  He enjoys spending time with his wife Donna, 3 children, and his wonderful grandchildren.

  • Aaron Harmon
    Customer Experience Manager
    262.821.5000 ext 373

    Monday 9-5. Tuesday 9-8. Wednesday Off. Thursday 9-8. Friday 9-6. Saturday 9-5


    Aaron joined the team in 2018 and quickly fell in love with the brand. He enjoys working with other enthusiasts who have a passion for performance and luxury. He also is very interested in getting to know the owners of the cars we sell. Both who they are and what they do. As a young enthusiast, he made a childhood dream come true and purchased a 2005 911 Carrera S in late 2021. 


    Aaron's favorite Porsche is the Cayman GT4. 

  • Jason Mayes
    General Sales and Finance Manager
    262.821.5000 ext 340

    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
    Certified Brand Ambassador-Service
    262.821.5000, Ext. 364

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    Zach has been with Porsche Waukesha since 2015.  Zach has the passion for Porsche that we have never seen before.  He is the very proud owner of a 2011 Porsche Cayman S, and a 2019 Porsche Cayman.  He loves to "drive cars fast".  He is a member of PCA and takes advantage of any track time he can get. 

    Zach's favorite Porsche is the GT3.

  • Jay Schiek

  • Natanya Cooper

  • Mary Oleszak

  • Kelsie Kuehl

  • Tim
    Porsche technician

  • Jakub
    Porsche technician

  • TJ