Local, independent, and built on outstanding people

Herve Yoga, CRFP, FMP

CEO & Founder at Rox Services Inc — Beaverton, Oregon

Herve Yoga, CRFP, FMP, founded Rox Services Inc in February 2018 in Beaverton, Oregon, and serves as its CEO & Founder. Rox Services provides commercial food service equipment repair, installation, and preventive maintenance for restaurants and food service operations across the Portland metro area. The company is an NMSDC-certified Minority Business Enterprise and holds Oregon CCB #225032.

Herve leads an eight-person team at Rox Services and is moving the company from an owner-operator model to a leadership-run operation.

Before founding Rox, Herve worked as a facilities technician with Wendy’s, as an HVAC/R technician with the Ralph Brennan Restaurant Group in New Orleans, and in facilities work at Muriel’s Jackson Square.

Herve holds a degree in civil engineering from the University of Yaoundé, Cameroon. His professional credentials include CRFP (Certified Restaurant Facilities Professional), FMP (Facilities Management Professional), EPA Universal certification, and NATE Core.

Shelby Batzel

Service Manager — Rox Services Inc, Beaverton, Oregon

Shelby Batzel brings over 25 years of experience in the service industry and customer service to Rox Services Inc, where she joined as Service Manager in May 2025.

At Rox, Shelby runs daily dispatch and technician scheduling. She builds estimates and bids, verifying OEM parts through manufacturers and vendors; creates and receives purchase orders; creates invoices and processes payments; interviews candidates and completes onboarding; and serves as interim parts owner.

Before Rox, Shelby worked at Belt Tech & Supply in Tigard, Oregon (April 2024 – May 2025), handling belting quotes and installs, order entry, and invoicing. Before that, she was office manager at RMH Systems (July 2020 – December 2022), where she dispatched technicians, managed inventory, shipped and received parts, and managed office payroll.

Ana Gurll

Service Administrator — Rox Services Inc, Beaverton, Oregon

Ana Gurll is Service Administrator at Rox Services Inc in Beaverton, Oregon, where she handles bookkeeping, human resources, licensing, and insurance. She also handles payroll and 401(k) administration, and she manages collections end to end.

Before joining Rox, Ana was an Administrative Assistant, Bookkeeper, and Payroll administrator at Decker Farms in Hillsboro, Oregon (May 2025 – November 2025), where she managed bookkeeping and payroll, processed sales memos and purchase orders, handled invoicing and accounts receivable, and prepared quarterly and year-end payroll reporting, including 1099 NEC and MISC reporting.

From January 2023 to July 2024, Ana was a General Ledger Specialist at RACC in Portland, Oregon, where she entered and reconciled journal entries, reconciled bank accounts to the general ledger, managed the Key2Purchase card program, prepared payroll entries, and processed accounts payable grant encumbrances.

From August 2016 to December 2022, Ana was Bookkeeper and Donor Relations at Quechua Benefit in Hillsboro, Oregon, where she managed the organization’s full financials, handled the audit process and worked closely with the CPA on year-end financials, executed payroll and hiring, and reported to the directors and board.

In 2016, Ana was Financial Manager at Caliber Plumbing and Mechanical in Portland, Oregon (May – August 2016), where she maintained accounts receivable, managed all accounts payable processes, pulled permits for projects, and held human resources and benefits responsibilities.

Ana spent nearly two decades at Nike, Inc. in Beaverton, Oregon (May 1996 – October 2015). She began as an Accounts Receivable Representative (1996–2004) and rose through senior representative roles to NACFS Functional Operations Supervisor, where she led a team of 35+ specialists handling payments, deductions, returns, and banking for all of Nike’s North America customers — a $525 million operation.

Ana brings deep knowledge of accounts receivable, accounts payable, and the general ledger, along with process improvement and organizational growth and change. Her systems experience includes QuickBooks Online and Desktop, SAP, ADP, MIP, Key2Purchase, and Windows 365. She is fluent in Spanish and is an Oregon Notary Public.

Jonathan Griffith

Chief Technician — Rox Services Inc, Beaverton, Oregon

Jonathan Griffith is Chief Technician at Rox Services Inc in Beaverton, Oregon — the company’s lead COMBI technician for commercial refrigeration and cooking equipment. He runs the Monday technician meeting, enforces Rox’s field completion and safety standards, and is the technician the rest of the field team escalates to.

Before joining Rox, Jonathan was a Management Consulting Senior Analyst at Accenture in Portland, Oregon (January 2022 – November 2025), where he owned project delivery tracking and performed data analysis and reporting using tools including Power BI and Power Automate, and led a team of 14.

A U.S. Navy veteran, Jonathan served as Leading Chief Petty Officer for Air Conditioning & Refrigeration with Naval Surface Squadron Five in Manama, Bahrain (September 2019 – September 2021). He directed six supervisors and 22 technicians in the maintenance, repair, and modernization of shipboard air conditioning, refrigeration, diesel, water, and hydraulic systems, and managed gauge calibration for assets across 14 naval ships.

From July 2016 to September 2019, Jonathan was an Afloat Trainer for Air Conditioning & Refrigeration with the U.S. Navy’s Afloat Training Group in Everett, Washington, where he audited and evaluated shipboard engineering departments across the fleet and trained their personnel. Eight ships completed their engineering certifications on the first attempt under his training.

Earlier, as Leading Petty Officer for Air Conditioning & Refrigeration aboard USS Carney (DDG-64) (May 2011 – July 2016), Jonathan led a team of 12 maintaining industrial equipment including York centrifugal chillers and Carrier reciprocating refrigeration systems. His refurbishment of four electro-hydraulic condenser water control valves extended the plant’s operational life and saved the Navy over $100,000 in replacement costs.

Jonathan holds a Master of Science in Organizational Leadership from National University, where he graduated with Distinction, and a Bachelor of Arts in Physics from Lawrence University. His certifications include EPA 608 refrigerant handling, USMAP registration as a Refrigeration Mechanic, and U.S. Navy qualifications as a Refrigeration and Air Conditioning Systems Technician and as an Instructor.