Sr. Product Engineer - Single Ply

Who We Are

Johns Manville is a leading manufacturer and marketer of premium‑quality insulation and commercial roofing, along with glass fibers and nonwovens for commercial, industrial and residential applications. Our products are used in a wide variety of industries including building products, aerospace, automotive and transportation, filtration, commercial interiors, waterproofing and wind energy.

$95,200.00 - $ Annual. This is the base salary pay range that an applicant can expect to make upon hire. Pay within this range will vary based upon relevant experience, skills, and education among other factors. In addition, this position is eligible for an incentive bonus.

Are you passionate about materials science, product innovation, and solving complex engineering challenges? Join our Roofing Systems team as a Senior Product Engineer – Single Ply, where you’ll play a critical role in advancing high‑performance TPO membrane technologies from concept through full commercialization. In this role, you’ll be a technical leader; driving formulation excellence, supporting manufacturing plants, and collaborating across R&D, product management, supply chain, and operations.

Your work will directly influence product quality, customer satisfaction, and the next generation of roofing solutions.

As a Senior Product Engineer, you will provide technical and formulation leadership across both existing products and new developments. Your responsibilities will span laboratory research, manufacturing support, and large‑scale commercialization.

• Lead new TPO product and process development from R&D through manufacturing scale‑up
• Drive formulation development for both commercialized and in‑development TPO products
• Design and execute experimentation, trials, and testing to assess product performance and success
• Lead trial work, scale‑ups, and full commercialization of new TPO products
• Identify requirements and develop clear, value‑driven product definitions aligned with customer needs

• Provide internal and external technical support, including troubleshooting customer complaints and product issues
• Support manufacturing plants during emergencies and ongoing product or process issues
• Support equipment design solutions to maintain and improve product quality
• Work directly in production environments during trials to ensure successful implementation
• Provide technical support to external partners, including suppliers and vendors, as it relates to the TPO product line

• Plan, design, and lead TPO projects using safety, quality, production, cost, and data‑driven Six Sigma principles
• Drive excellence in staged product development and project management within the Innovation Commercialization Group
• Lead multiple projects across the division through benchmarking and cross‑functional coordination
• Execute Division goals, standardization efforts, and best‑practice sharing across applicable Roofing Systems plants
• Support AOP initiatives, CAPEX planning, and strategic business projects

• Perform root‑cause and corrective‑action analysis to resolve product and process issues
• Support development of manufacturing specifications by linking product requirements to manufacturing capabilities through complex experimentation
• Analyze data to drive product, process, and quality improvements
  
  Ensure findings are properly documented, tracked, and shared through formal reports and presentations within the quality management system

• Collaborate closely with R&D, product management, process engineering, supply chain, and operations teams
• Partner with internal experts and external resources to advance core TPO technologies
• Monitor competitor technologies and market intelligence, feeding insights back to innovation and business teams
• Support second‑source raw material initiatives and identify new technical supply options with the supply chain team

• Actively support and promote a…