As a Tier 1 Automotive supplier, Sigma Machine is constantly on the cutting edge. Whether we're providing rapid plastic prototyping services for our clients or we're investigating new possibilities in pneumatic actuated fixtures, we are continually looking to expand our knowledge base. On this page, you will find posts, articles and white papers relevant to the projects that we are currently pursuing.

Meet Our Leadership Team

Yogen Rahangdale, CEO

  • Mr. Rahangdale and his partners have led investment in many metals-based manufacturing businesses since 2010, specifically: Whitehall Industries (2010 investment, exited), Empire Die Casting (2013 investment), Kay Manufacturing (2017 investment), Delta Gear (2021 investment).
  • Prior to 2010, Mr. Rahangdale was employed at American Axle in a number of roles, including President, Chief Operating Officer, Vice Chairman and Chief Technology Officer.
  • Prior to American Axle, Mr. Rahangdale was employed 12 years at Chrysler Corporation.

Inacio Moriguchi, President

  • Mr Moriguchi is a partner with Mr. Rahangdale at Sigma Machine and is the lead executive at Kay Manufacturing (St. Joseph, MI) and Diversified Manufacturing and Assembly (Sterling Heights, MI).
  • Prior to Kay Manufacturing, Mr. Moriguchi was employed at American Axle in a number of roles, including Vice President of Operations, President of Colfor Manufacturing and Executive Director of Metal Forming Business Unit.
  • Also, Mr. Moriguchi acted as President of Stant Corporation from 2013 through 2016.

Doug Marciniak, CFO

  • Joined Sigma Machine in 2022 as Chief Financial Officer.  Doug continues to also be the CFO for Kay Manufacturing Company, LLC., which he joined in 2018.
  • Prior to Sigma, Doug was President of Anderson Fittings, A Marmon|Berkshire Hathaway Company, for three years. Doug also worked at ITW (Illinois Tool Works, Inc) for 28 years holding several Operational and Financial positions, including Vice President & General Manager, and Division Controller.
  • Additionally, Doug has BS and MBA degrees from DePaul University and is a licensed Certified Public Accountant.

Juan Arciniega, Vice-President of Sales, Purchasing and SCM

  • Currently, Mr Arciniega acts as VP of Sales, Supply Chain and Program Management. Prior to this current role Mr. Arciniega was VP of Manufacturing Operations and started as Director of Quality.
  • Prior to Sigma Machine, Mr. Arciniega held various responsibilities at Kaiser Aluminum, including Automotive Business Development Manager, Operations Manager, Extrusion/Die Shop and Fabrication Manager and Technical/Process Manager form 2011-2018
  • Additionally, Mr. Arciniega acted as New Product Development Manager, Extrusion Manager, and Technical manager for Hydro Aluminum between 1999-2009.

John Eiler, Senior Manager of Quality, Maintenance and Engineering

  • Joined Sigma in 2023 as the Engineering Manager and since that time has added Quality and Maintenance to his responsibilities.
  • Prior to Sigma, John has over a decade of management experience in tooling, automation, specialty machine design and fabrication (including controls engineering).
  • Additionally John has a deep machining background, starting hands on machining as a teenager.
  • Spent several years teaching in industrial trades and engineering technology at multiple colleges and organizations.
  • Has a BSME and MSIE from WMU.

Kimberly Matthews, Manager of Human Resources

  • Joined Sigma Machine in 2021 as Human Resource Manager and has since added Health, Safety and Environmental.
  • Prior to Sigma, Kim worked at Hydro Aluminum, II Stanley, Bradford White and Steelcase, all in leadership roles. She has just over 31 years’ experience in HR, including health and safety, work comp case management, employee and labor relations, contract negotiations, talent acquisition, and compensation and benefits.

Brittny Boshoven, Production Manager

  • Joined Sigma Machine in 2022 as a Production Supervisor.  In 2023 Brittny was promoted to Production Manager. 
  • Prior to Sigma, Brittny worked for American Axle for 12 years and has an additional 15 years’ experience in management positions within the automotive field.

Amber Felty, Purchasing Manager

  • Joined Sigma Machine in 2014, where she worked tirelessly to learn and be part of every department at Sigma.  Since that time, Amber’s held a number of key positions including Quality Lead, Production Supervisor where in 2020 she was promoted to Production Manager in 2020.
  • In 2023, Amber was then promoted to Purchasing Manager.  Amber’s growth is an inspiration and one that she continues to work hard to ensure she is always going the extra mile to be successful.  

Mike Shaver, Chief Strategy Officer

  • Joined Sigma Machine in 2023 as Chief Business Strategist
  • Prior to joining Sigma, Mike worked 35 years at Ford Motors in similar roles including Global Driveline and eAxle, Engine and Transmission, Vehicle Module/Assembly Integration Purchasing Management.
  • In addition, Mike held several Senior Management roles in various strategic, supply and risk management, product development, and commodity and program management positions. 


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