Assistant Plant Manager

Marmon Holdings, Inc.•Phoenix, AZ

1d•Onsite

About The Position

Coilmaster Corporation, a part of the global industrial organization Marmon Holdings (backed by Berkshire Hathaway), is seeking an Assistant Plant Manager for its Phoenix, AZ facility. This role is crucial during a key stage of expansion, offering a hands-on manufacturing leadership opportunity. The Assistant Plant Manager will support daily plant operations, develop strong production practices, and contribute to the foundation for continued growth. Coilmaster is a leading manufacturer of custom heat transfer coils and related HVAC/R solutions, committed to high-quality products and dependable service.

Requirements

High school diploma or GED required.
3–5 years of experience in a manufacturing environment.
Prior leadership experience in manufacturing, production supervision, operations, or a team lead capacity.
Strong understanding of production flow, safety practices, quality standards, and manufacturing processes.
Experience supporting production schedules, labor planning, employee accountability, and operational problem solving.
Ability to lead employees on the production floor with professionalism, consistency, and fairness.
Strong communication skills with the ability to interact effectively with hourly employees, supervisors, managers, customers, and cross-functional teams.
Intermediate Excel skills, including the ability to work with pivot tables/charts, VLOOKUPs, and basic reporting.
Basic proficiency with Microsoft Office, including Outlook, Word, and PowerPoint.
Ability to read and understand production schedules, work instructions, quality requirements, operational reports, and basic drawings.
Ability to work full-time onsite in a manufacturing plant environment.

Nice To Haves

Associate or bachelor’s degree in Manufacturing, Business, Operations Management, Engineering, or a related field.
Experience in HVAC, heat transfer, coil manufacturing, metal fabrication, assembly, brazing, or a related manufacturing environment.
Experience in a small-to-mid-sized manufacturing plant where leaders are expected to be hands-on.
Experience with ERP, timekeeping, production tracking, or manufacturing systems.
Basic understanding of Lean manufacturing, 5S, continuous improvement, or similar process improvement methods.
Lean, Six Sigma, OSHA, or front-line leadership training.
Bilingual English/Spanish skills.
Experience working with a multilingual workforce.
A polished, professional communication style and genuine excitement for working in a manufacturing environment.

Responsibilities

Support daily manufacturing operations, including production scheduling, staffing coordination, workflow, labor allocation, and follow-up on production priorities.
Maintain an active presence on the production floor to support supervisors, production employees, and front-line leaders.
Help identify and resolve production issues, equipment concerns, bottlenecks, staffing gaps, material shortages, and process challenges.
Partner with Production Managers, Supervisors, Shipping, Quality, Engineering, Maintenance, Human Resources, and other support teams to resolve operational needs.
Monitor daily production activity to ensure work is completed on time and in alignment with customer requirements, quality standards, and operating procedures.
Track and support key production metrics, including output, efficiency, attendance, scrap, rework, safety items, quality concerns, and schedule adherence.
Reinforce company safety policies, safe work practices, and expectations across the plant.
Support quality initiatives by partnering with Quality, Engineering, and Production teams to reduce defects and address customer concerns.
Participate in customer-facing discussions to better understand expectations and help ensure Coilmaster products meet customer needs.
Support Lean manufacturing, 5S, waste reduction, standard work, and continuous improvement initiatives.
Assist with onboarding, training, cross-training, and skills development for production employees.
Support consistent application of attendance, conduct, safety, and performance expectations.
Serve as backup support to the Plant Manager as needed, including operational decisions, employee communication, production follow-up, and meeting participation.