• Plumis team

Meet the team


  • Plumis Founder William Makant

    William Makant

    Chief Executive Officer

    William is an experienced Mechanical Engineer and Product Developer with a family background in the fire protection industry. He led multiple engine development projects at the Ford Motor Company in Brazil, Germany and the UK before joining Plumis. William holds an MBA from Imperial College, London. He likes to cycle and has a keen interest in motorbikes.

  • Plumis Founder Yusuf Muhammad

    Yusuf Muhammad

    Chief Design Officer

    Yusuf is a co-inventor of Automist. He’s a multi-award winning industrial designer with an Honours Masters degree in Engineering and a double Masters in Innovation Design Engineering. Yusuf has experience working with P&G, The Department of Health and Research in Motion. He has also successfully passed a BAFSA approved Sprinkler training course. Yusuf plays basketball and enjoys street art, photography, graphic novels, music and travelling.

  • Plumis Director Suezann Holmes

    Suezann Holmes

    Chief Financial Officer

    Suezann holds an MA in International Relations, an MBA in Finance and a BPA. As former CFO for Moo.com and with experience working for Virgin Media and other commercially known companies, Suezann brings a skill set well versed in profit improvement, cost reduction, mergers, divestitures, acquisitions and budgets. Suezann enjoys cycling in her spare time and takes every opportunity to go sightseeing in London.

  • Plumis Executive Anderson Horst

    Anderson Horst

    Product Manager

    With a degree in Mechanical Engineering and over 10 years experience working in the Automotive industry, Anderson is a key player in the continued development of Plumis and our products. His experience ranges from multi-variable experiment design analysis to managing a team of engineers. Anderson speaks English, Portuguese and German, has a passion for good food and enjoys rock climbing.

  • Plumis Staff James Munger

    Dr James G. Munger

    Fire Protection Associate

    James “DOC” has been active in the field of fire protection for over 40 years, beginning his career as a firefighter before becoming a Deputy State Fire Marshal for the State of Alabama. He has been an active member of the Adjunct Faculty of the National Fire Academy in Emmitsburg, Maryland for 33 years, developing and instructing courses in fire protection, code enforcement and fire investigation.

  • Plumis Staff Elisha-Kay Gross

    Elisha-Kay Gross

    Office Manager

    Elisha-Kay has over 15 years of experience in finance which includes banking and accounting, 10 years of experience in organizational development and various management roles. She holds a degree in finance and is currently pursuing an MBA in business with a certificate in financial planning. Elisha-Kay enjoys spending time with her two children, yoga and swimming.

  • Plumis NED Peter Cowley

    Peter Cowley

    Non Executive Director

    Peter is a Cambridge University Engineering and Computing graduate and fellow of the Judge Business School. He’s run technology and construction businesses for over three decades and is involved in charity and social enterprise governance, as chair and treasurer, on many trustee boards. Peter founded and runs the Martlet start-up investment fund in Cambridge and has invested in over 30 start-ups. He is on the board of seven of these, including Plumis. Peter enjoys fine dining.

  • Plumis Staff Matt schwarzkopf

    Matt Schwartzkopf

    Business Development Manager

    Matthew has over 10 years of experience in marketing and account management. Specializing in the home remodeling industry and large retail distribution centres. He has in depth knowledge of the needs of clients and consumers with the ability to identify opportunities and risks. As Business Development Manager he works with large firms to help them incorporate Automist into their properties. Matthew also has a keen interest in rare beer, weight lifting and spoiling his two dogs.

  • Plumis Career Plumis Stormtrooper

    Plumis Stormtrooper

    Top talent

    We’re always on the lookout for outstanding and unique individuals who share our values. Being a part of Plumis requires an independent streak and creative collaboration skills to help us make our products the best they can be. We want to find the best and we move fast, so if this sounds like you, send your CV to recruitment@plumis.us