Operations Manager

OLDCASTLE APG, INC. in; Harrisonville (MO); On-site; USD 80,000 - 105,000; Full time

Job summary

Oldcastle APG, part of CRH, is seeking an Operations Manager to lead our dry mix plant in Harrisonville, MO. This role drives operational excellence, safety, and quality while guiding a high-performing production team.

The ideal candidate brings lean manufacturing experience, Six Sigma know-how, and a passion for continuous improvement to support long-term business goals. Join a company that values safety, accountability, and ongoing development.

Qualifications

• Bachelor's Degree and/or 3+ years in manufacturing management.
• Experience leading diverse teams in manufacturing.
• Knowledge of lean manufacturing, Six Sigma, and process improvement.

Responsibilities

• Oversee daily plant operations, ensuring efficiency, safety, and product quality
• Plan and manage production schedules, resource allocation, and output targets
• Lead safety programs and ensure OSHA compliance
• Develop long-term manufacturing strategies with site leadership
• Coach production supervisors and frontline teams

Skills

Lean manufacturing

Six Sigma

Data analysis

Education

Bachelor's Degree

Tools

SAP

Job description

Oldcastle, a CRH company, is reinventing what's possible in building solutions. We are the leading provider of innovative outdoor living products and utility infrastructure solutions for the water, energy, and communications markets throughout North America. We're a trusted and strategic partner to engineers, contractors, distributors, specifiers, retailers, and homeowners alike as the manufacturer of precast concrete, polymer concrete, and plastic infrastructure products. Our portfolio of brands includes Oldcastle APG, Oldcastle Infrastructure, Belgard® hardscape, Echelon® Masonry, RDI® railing, Catalyst™ Fence Solutions, Sakrete® packaged concrete, Amerimix® mortar, Pebble Technology International® pool finishes, and Techniseal® sands and sealant technologies.

Job Summary

Oldcastle APG is seeking a results driven Operations Manager to help lead manufacturing operations at our dry mix plant in Harrisonville, MO. This role is responsible for driving operational excellence, ensuring safety and quality standards, and leading a high-performing production team. The ideal candidate will bring strong leadership, lean manufacturing expertise, and a passion for continuous improvement to support our long-term business goals.

Job Location

This is an onsite role based in Harrisonville, MO.

Job Responsibilities

• Oversee daily plant operations, ensuring efficiency, safety, and product quality
• Plan and manage production schedules, work assignments, and resource allocation to meet output targets
• Monitor key performance indicators (KPIs) and leverage dashboards to identify gaps and implement corrective actions
• Lead root cause analysis for production issues and drive resolution strategies
• Lead, mentor, and develop production supervisors and frontline teams
• Foster a culture of accountability, collaboration, and continuous learning
• Conduct regular performance evaluations and provide coaching and feedback
• Champion a safety-first culture and ensure compliance with OSHA and company safety standards
• Conduct regular safety audits and implement corrective actions as needed
• Support and enforce health, safety, and environmental policies
• Identify and implement lean manufacturing principles to improve productivity and reduce waste
• Drive process optimization and cost reduction initiatives
• Evaluate and introduce new technologies and methods to enhance operational efficiency
• Collaborate with site leadership to develop long-term manufacturing strategies
• Perform other duties as assigned to support plant operations and business objectives
• Enter and maintain safety related data into Oldcastle programs
• Assist in the preparation, submittal, and maintenance of permit applications to the proper regulatory controls
• Use acceptable methods of inspecting sample and test aggregates, asphalt, concrete, or other materials for the purpose of quality control

Job Requirements

• Bachelor's Degree and/or 3+ years' experience in a similar industry or a combination of education and experience
• 3+ years of experience in manufacturing management, preferably in building materials or a related industry
• Proven leadership experience with the ability to inspire and motivate diverse teams
• Strong knowledge of lean manufacturing, Six Sigma, and process improvement methodologies
• Familiarity with ERP systems and data analysis tools; experience with SAP or similar platforms preferred
• Excellent communication, problem-solving, and organizational skills
• Working knowledge of OSHA standards; OSHA 30 certification or willingness to obtain within 6 months

What CRH Offers You

• Highly competitive base pay
• Comprehensive medical, dental and disability benefits programs
• Group retirement savings program
• Health and wellness programs
• An inclusive culture that values opportunity for growth, development, and internal promotion

About CRH

CRH has a long and proud heritage. We are a collection of hundreds of family businesses, regional companies and large enterprises that together form the CRH family. CRH operates in a decentralized, diversified structure that allows you to work in a small company environment while having the career opportunities of a large international organization.

Oldcastle APG, a CRH Company, is an affirmative action and equal opportunity employer.

EOE/Vet/Disability

CRH is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, status as a protected veteran or any other characteristic protected under applicable federal, state, or local law.

AI tools may be used in certain stages of the employment lifecycle, such as candidate review; however, all final employment decisions will be made by a person.