
About Us
MTNA, Inc. is part of the Eternity Systems Group, a global leader in the washing, sanitizing, and management of reusable packaging solutions. We support some of the world's largest food and retail supply chains by providing high-quality cleaning and logistics services for reusable plastic containers (RPCs) and other reusable transport packaging.
At our Rancho Cucamonga facility, we operate in a fast-paced production environment focused on safety, quality, operational excellence, and continuous improvement. Our success is driven by a diverse and dedicated workforce committed to delivering exceptional service to our customers while maintaining the highest standards of food safety and environmental responsibility.
We believe our people are our greatest asset. We foster a culture of teamwork, accountability, respect, and professional growth, where employees are empowered to contribute ideas, develop their skills, and make a meaningful impact on our operations. As part of a global organization, we offer opportunities to collaborate with teams across North America and around the world while helping advance sustainable supply chain solutions.
If you are a hands-on leader who thrives in a dynamic environment and is passionate about developing teams, driving results, and building a culture of excellence, we invite you to join us.
The Maintenance Manager is responsible for leading maintenance operations across a three-shift production facility, ensuring the safe, reliable, and efficient operation of equipment, infrastructure, and maintenance systems. This role combines strategic planning with hands-on leadership to maximize equipment uptime, improve asset performance, control costs, and support operational objectives.
The Maintenance Manager maintains a visible onsite presence during core business hours of 8:00 a.m. to 4:30 p.m. and provides leadership support for off-shift operations as needed. This position oversees maintenance personnel, manages budgets and maintenance expenditures, and drives a culture of accountability, safety, and continuous improvement.
Success in this role requires strong technical knowledge, sound decision-making, and the ability to effectively lead teams in a dynamic environment while partnering with Operations and site leadership to achieve business goals.
What You’ll Do
As the Maintenance Manager, you will:
What You’ll Bring
Why You’ll Love Working Here
Physical Requirements
This role requires physical engagement, including standing, walking, bending, kneeling, climbing, and lifting items over 50 pounds. Exposure to noise, moving mechanical parts, varying temperatures, fumes, and vibration may occur. Safety glasses and safety shoes are required. Off-shift or weekend work may be required based on operational needs.
E-Verify and Equal Opportunity Statement
Eternity Systems/MTNA, Inc. participates in the E-Verify program and is an Equal Opportunity Employer. We are committed to fostering a diverse and inclusive workplace and do not discriminate based on race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, veteran status, or any other protected characteristic.
Ready to Lead?
Bring your leadership, technical expertise, and strategic mindset to Eternity Systems and help drive our maintenance operations to the next level.

For over 30 years, ETERNITY Systems has been developing industrial solutions dedicated to the reuse of packaging in the food, cosmetics, logistics, and events sectors. Its expertise lies in industrial washing, but also extends to the repair, traceability, and transport of reusable packaging. With an international presence, the group operates 18 washing centers and processes more than 750 million packages per year, thus promoting the circular economy and reducing the use of single-use packaging.