Material Science Engineer Jobs in Tennessee (NOW HIRING)

Oldcastle APG, a CRH Company, is North America's leading provider of innovative outdoor living solutions that enable customers to Live Well Outside. The manufacturer's portfolio of premier building products inspires endless possibilities while providing enduring outdoor spaces where people can connect, reflect and recharge. Award-winning brands include Belgard hardscape, Echelon Masonry, MoistureShield composite decking, RDI railing, CatalystTM Fence Solutions, Sakrete packaged concrete, Amerimix mortar, Pebble Technology International pool finishes, Lawn & Garden mulches and landscape features, and Techniseal sands and sealant technologies.

Job Summary The Materials Science Engineer (Extrusion) provides technical expertise in polymer behavior, formulation development, and process optimization for plastic extrusion operations. This role supports production, quality, and R&D by ensuring that materials, additives, and processing conditions deliver consistent product performance, cost efficiency, and manufacturability. Job Location This is a remote role when not traveling locally or nationally to our manufacturing sites.

This person must reside in the greater Philadelphia, PA, Charlotte, NC, Dover, DE, Bulls Gap, TN or Tampa, FL area. Job Responsibilities Optimize extrusion parameters including melt temperature, screw speed, and line speed. Support design and optimization of extrusion dies, screws, and downstream equipment.

Perform DOE studies to improve throughput, quality, and dimensional stability. Develop and optimize compound formulations including color masterbatch, fillers, stabilizers, and additives. Evaluate resin properties affecting extrusion behavior such as MFI, rheology, fusion, and thermal stability.

Creates and documents clear, concise and accurate reports under guidance of direct management, providing insights on results and conclusions based upon data sets. Define resin specifications, incoming material requirements, and in‐process quality checks (dimensions, gloss, haze, tensile, melt flow, density, impact). Use analytical tools to diagnose material or process issues.

Troubleshoot problems such as: Melt fracture / sharkskin, Gels or black specks, Die lines or surface roughness, Bubbles / voids, Warpage or dimensional instability, Color streaking or contamination, Excessive die drool or buildup. Work closely with extrusion operators to implement material or recipe changes, adjust settings, and improve process robustness. Conduct root‐cause analysis for scrap or downtime events using tools such as5‐Why, Ishikawa, and statistical analysis.

Maintain and update work instructions, material handling procedures, resin drying guidelines, and hopper loading practices. Creates procedures to ensure all safety concerns and hazards are properly addressed in compliance with company and regulatory requirement. Manage resin trials, supplier evaluations, and approval of alternative materials to reduce cost or improve performance.

Reduce material usage and scrap through formulation refinement, tighter process control, and resin substitution. Collaborate with Purchasing and R&D on resin cost-reduction and qualification projects. Support Lean, Six Sigma, and process capability improvement (Cp/Cpk) initiatives.

Travel up to 50% of the time. Job Requirements Bachelor's degree in Materials Science, Polymer Engineering, Chemical Engineering, or related field. Hands‐on experience with thermoplastic extrusion (single‐screw, twin‐screw, profile, sheet, pipe, film, tubing, or wire & cable).

Strong understanding of polymer behavior: melt rheology, thermal transitions, degradation mechanisms, and stabilization chemistry. PVC experience preferred. Familiarity with quality systems, lab testing methods, and statistical analysis.

Strong analytical and troubleshooting skills, especially in dynamic production environments. Excellent communication with operators, supervisors, quality teams, and customers. Practical, hands‐on approach to materials and process experimentation.

Ability to manage multiple projects and meet deadlines in a high‐volume manufacturing setting. Overnight travel up to 50%. Compensation Base salary is $70,000 - $110,000 401(k) / retirement savings program Short‐term and long‐term disability benefits Life insurance Health, Dental, and Vision insurance Paid time off Paid holidays 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.

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