Management Team - CNC Swiss Screw Machine Parts | CNC Turned Parts
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Aneesa Muthana

President and Co-Owner

Aneesa has been the President and Owner of Pioneer Service since 1993. At that time, she had already gained 10 years of first-hand experience in her family’s precision machining business. Shortly after taking the reins, Aneesa grew Pioneer Service from its original 10,000 sq. ft. of manufacturing space to its current 25,000 sq. ft. Over the years, her entrepreneurial spirit has driven the company’s sales growth. Her mission is to provide top service and quality to her customers and a workplace where each employee feels valued and can grow to their full potential.

Aneesa is a member of the board of directors of the Precision Machined Products Association (PMPA), Valley Industrial Association (VIA) and the Illinois Manufacturers Excellence Center (IMEC), where she oversees activities on behalf of the membership by contributing to policies, programs, and objectives to maximize the association’s performance. Her other passions include her family and volunteering for humanitarian efforts, both domestically and internationally. She is the mother of two grown sons and is the proud grandmother of two. Aneesa is a certified Regional Trainer for the American Red Cross and spends many long weekends a year providing relief to victims of natural disasters around the world. For more information, you can connect with Aneesa on LinkedIn.

Steve Brezwyn

Vice President of Operations

Steve has been in charge of Pioneer Service’s operations since 2002.  His responsibilities span the entire company’s manufacturing and building operations.  Additionally, he serves as our ISO Management Representative and is accountable for customer quoting.  His 35 years’ experience in the screw machining industry also includes 12 years’ experience with centerless and creep-feed grinding.  Prior to Pioneer Service, Steve’s background included positions as Shipping Manager, Materials Manager, Director of Materials and Procurement, Plant Manager and Plant Superintendent. Steve is leveraging his expertise in Materials Management, Supervision, and Lean Manufacturing to help drive Pioneer Service’s growth.  His primary focus is ensuring that our Manufacturing and Quality Assurance equipment, personnel and procedures continue to provide our customers a competitive advantage. You can connect with Steve at LinkedIn. Away from the office Steve enjoys time with his family and loves golf and volleyball.

Eric Smith

Director of Sales

Eric joined Pioneer Service in 2012.  With a background in materials engineering, he has 25 years’ experience in technical sales management ranging from fabricated metal parts and insert-molded components to low- carbon steels.  Eric has served manufacturers of all sizes, from machine shops to Fortune 500 enterprises, and is very familiar with providing custom prototypes and production parts to the automotive, medical device, wireless, HVAC and motor/generator industries. He is encouraged that North American OEMs now recognize the cost advantages of working with world-class suppliers within their own region.  Eric’s current focus is building relationships with manufacturers who value Pioneer Service’s comprehensive machining platform of Swiss CNC Lathes, CNC turning centers, and unique in-house centerless grinding services.  He is also seeking partnering and teaming opportunities to leverage the company’s certified Women-Owned Business status. You can connect with Eric on LinkedIn. When he’s not meeting with customers, Eric enjoys biking, skiing and traveling with his wife and two sons.

Rose of Sharon DeVos

Business Development Manager

Rose of Sharon joined Pioneer Service in 2013. Since 2000, she’s worked in the metals industry providing solutions to manufacturing companies of all sizes and complexities. She brings technical expertise in metals as well as a holistic understanding of manufacturing business practices.  At Pioneer Service Inc. she’s building relationships to contribute not only quality machined parts but ideas to help Pioneer’s customers prosper.

Rose of Sharon represents Pioneer Service at supplier diversity events as the designated “WBE representative.” She’s an experienced resource for manufacturing companies owned by women and minorities, able to help in their efforts to demonstrate value to corporations of all sizes. In 2015 Rose of Sharon led the ERP selection process which resulted in Pioneer Service selecting Global Shop Solutions as its primary business management software. She oversaw implementation and continues to be the key resource for the company’s technology needs, leading the efforts for improvements in process and the effective use of data to drive company success. She is also responsible for establishing and implementing the marketing plan, including website, marketing and social media program at Pioneer. In addition to growing business, she’s passionate about helping and healing children through adoption and foster care work. Since 2003, she and her husband have fostered a number of children and currently have five boys. You’ll find her connecting and contributing in person, on the phone, on TwitterFacebook and on LinkedIn.

James Rewis

Quality Manager

James joined Pioneer Service in 2016. He brings a wealth of experience, ranging from airplane maintenance in the Navy to 14 years as a Quality & Safety Manager specific to Swiss machining. His strong quality background includes familiarity with process validations, calibration programs, internal & external audits, Statistical Process Control (SPC), PPAP’s and Six Sigma training.  Our customers can rest assured that James’ team will provide the quality parts and documentation they are accustomed to receiving from Pioneer Service. And in his free time, James can be found on his motorcycle or engineering his micro-aquaponics (fish and plants) ecosystem. Feel free to reach out to him on LinkedIn.

Bob Anderson

Production Manager

Bob joined Pioneer Service in 2017. His 30+ years in the metalworking industry contain a cross-section of experience including tool & die, stamping, wire EDM, Swiss, CNC milling, deburring and finishing. Prior to joining the Pioneer team, Bob spent several years in Minnesota. While there, he served as a Department Head and then Plant Manager for a contract manufacturer, specializing in medical implants and instrumentation. He is very familiar with the regulations and requirements associated with medical device manufacturing.
Bob returned to his hometown of Chicago, to be closer to his first grandchild. In his spare time, he enjoys golf, and discovering new restaurants. You can connect with Bob at LinkedIn.

Get in touch with our team here for quotes or questions. Let us know what you need and we’ll make it happen.



“We received your shipment of XXX-XXX. They look great and everything seems to be in spec. They also perform really well which is a huge deal for us as it's given us clarity for our upcoming product release. Thanks again for the quick turn around and all your help!”
Chris H.- Product Development
“Thank you Eric! You have saved our reputation.I am really happy that we will be able to ship them tomorrow. Thank you !!!!!!!!”
Gregory K.- Instrumentation
“You guys are the best!Thank you all for your prompt replies and support. You continue to impress me.”
Mike U.- Aerospace/Defense Company
“Thank you Eric! You have saved our reputation.I am really happy that we will be able to ship them tomorrow. Thank you !!!!!!!!”
Gregory K.- Instrumentation
“We are very pleased with the outcome of the first bushing Pioneer Service produced. I sent an e-mail to James Sass and informed him we will be sending a second bushing we will be needing.”
David M.- Firearms Manufacturer
“My compliments to you and the team for hitting a home run!”
Gene D.- Automotive Aftermarket Manufacturer
“Attached is the new PO … You guys are doing a great job and on time delivery and quality are superb. Keep up the good work.”
Eric H.- Power Industry
“I see your commitment to quality and your deliveries are excellent. I look forward to continue building this relationship.”
Brad D.- Oil & Gas
“I am pleased to let you know that everything was perfect. The documentation was solid, the parts were all within specifications, and they assembled as designed. Not even a single part was out of spec. !”
Scott L.- Medical Device Mfg.
“We got the parts in yesterday afternoon. I opened the box and checked out a few and they looked GREAT! Thanks for all your help, and please pass along our gratitude to your crew as well! AND … thanks for doing such a nice job on the packaging, too.”
Todd K.- Furniture Mfg.
We have been purchasing shafts for our electric motors from Pioneer Service for decades. Pioneer is one of the best, if not the best, supplier of any product we have ever had. Their consistent quality, aggressive pricing and fast response time is unmatched!
Dave B.- Operations Mgr/Sub-fractional AC Motors
Pioneer Service has been a long time supplier and our plants use millions of Pioneer shafts per year. We have had ZERO quality or delivery issues with Pioneer. Forecasting, in our industry, is very difficult and we know we can always rely on Pioneer to expedite our rush orders!
Mike S.- Commodity Mgr/Electric Motors Mfg.
“Pioneer Service…fast quotes, clear communication, good quality, attractive pricing. One of my best vendors!”
Jay B.- Manufacturing Job Shop