JR MACHINE - Key Persons


David Verhoff - EVP

Job Titles:
  • Executive Vice President
Bringing a passion for sales and 25 years of experience in engineering, operations, lean manufacturing, and sales development, David is responsible for business development and standardizing JR Machine's sales process. He puts customer needs first and his experience working at companies that range from Fortune 500 to small privately held businesses gives him strategic insight into the unique needs and challenges our customers face. On the weekends, you can find him riding his mountain bike on a local trail, watching a Packer game, or camping in the north woods with his wife.

Emanuele Badalamenti

Job Titles:
  • Administrative Manager
When customers, vendors, and staff need timely responses to administrative questions, Emanuele is the person they turn to. Emanuele wears many hats and is responsible for human resources, accounts payable and receivable, accounting, payroll, and more. His customer-comes-first approach allows everyone to have the best experience possible when going through JR Machine's process. His favorite part of each day is learning something new that he can apply to future challenges. Emanuele unwinds by taking walks with his wife, playing golf, and working on the house.

Keegan Gast

Job Titles:
  • Quality Assurance Manager
Keegan has been a key part of our team for more than a decade. He creates the control plans used by operators throughout the manufacturing process. He also programs and operates our CMM for checking critical dimensions and parts. Keegan appreciates the family-like culture at JR Machine, where each employee has a sense of belonging and an opportunity to contribute. Keegan and his wife like to explore Wisconsin, staying at campgrounds across the state. They are also avid home brewers and enjoy perfecting different styles of beer for friends to try.

Matt Shambeau

Job Titles:
  • Operations Manager
As Operations Manager, Matt is responsible for managing JR Machine's quoting processes, inventory of nickel-based superalloys and nonferrous metals, and supporting the company's lean manufacturing practices. His 15 years of manufacturing experience, including a decade in purchasing, brings insights to the JR team and customers. He works with JR Machine's business partners and suppliers to find cost-saving measures and keeps in touch with customers about job status and future manufacturing needs. Matt makes the most of Wisconsin's great outdoors by kayaking, camping, golfing, and ice fishing when he isn't working on house renovations.

Michael Ross

Job Titles:
  • Regional Vice President, Sales
More than 25 years in engineering leadership and technical sales, backed by a mechanical engineering degree from the University of Washington drive Micheal to helps OEMs with innovative, cost-effective manufacturing services. He began his career as an R&D engineer. His experience selling technical equipment and developing inspection services provides an invaluable perspective for manufacturers in every sector looking to streamline the procurement of complex parts. Outside the office, Mike enjoys cruising with his wife and scuba diving all around the world.

Parker Tumanic - President

Job Titles:
  • President
Parker drives the company's vision to streamline the customer experience. Working directly with customer engineers to understand the critical functions of each part, Parker leads our team to provide exceptional value by focusing on those features while streamlining everything else. Parker enjoys that every day he sees one of our parts in some of the most advanced products in the world! When Parker isn't in the shop (which he says is pretty fun on its own), you can find him spending time with his wife and daughters.

Scott Schenk

Job Titles:
  • Vice President of Operations
A JR Machine team member for more than 25 years, Scott oversees all day-to-day operations, including customer service, quoting, order entry, and purchasing. He carefully selects key suppliers with the same values and objectives as JR Machine to be confident that we will work well together. This ensures we make the procurement and manufacturing of complex parts for our customers effortless and profitable. Outside of work, Scott likes to hunt, fish, and enjoy cabin life.

Shane Kunschke

Job Titles:
  • Vice President of Manufacturing
After 17 years at JR Machine, Shane is involved in just about every facet of business - from monthly planning, project quoting, directing quality assurance technicians, hiring and training new staff, helping with setup and machining of complex parts, equipment, maintenance, and even material handling. His primary focus is maintaining quality and assuring on-time delivery. He admires the respect shared between employees as together they meet new challenges every day with the broad range of parts JR manufactures. Outside of the shop, you'll find Shane immersed in a woodworking project or pursuing shooting sports.

Tim Tumanic - CEO

Job Titles:
  • CEO
Under Tim's visionary leadership and entrepreneurial spirit, JR Machine has become the premier contract manufacturer of precision parts for OEMs nationwide. With an emphasis on deploying the latest automation and robotics technology, combined with a focus on continuous improvement, a collaborative culture, and mentorship, he has guided JR Machine to streamline complex part procurement for customers and consistently deliver impressive results. His favorite part about working at JR Machine is observing employees foster a winning culture. When Tim is away from work, he enjoys hunting, fishing, reading, spending time with his family, and traveling with his wife.