Materials Engineer

Overview

Headquartered in Old Saybrook, CT, Infiltrator Water Technologies is the leading provider of engineered plastic chambers, synthetic aggregates, tanks, advanced wastewater treatment systems, and accessories for the onsite/decentralized wastewater and storm water management industries. The majority of Infiltrator products are manufactured from recycled plastic. Founded in 1987, we operate throughout the US and Canada with 8 manufacturing plants in the US, dedicated sales, and corporate team members.

Infiltrator is a pioneer in innovative plastic technologies for underground water management. Infiltrator components are used in most onsite septic systems installed in the United States and Canada. Infiltrator is a proud Corporate Partner of Habitat for Humanity and each year donates components for 50 septic systems serving Habitat homes in North America. Infiltrator is committed to advancing the state of the art in all fronts, including product design, manufacturing, materials, wastewater science, marketing, management, and employee development.

In other words, we strive to be the best we can be.

We are seeking a highly motivated, hands‑on Materials Engineer with experience in PP and PE within a production environment. This role blends traditional materials engineering with modern, data‑driven approaches by leveraging programming, automation, and advanced analytics to improve material performance, consistency, and cost. The ideal candidate is a self‑starter with strong curiosity and a bias for action, comfortable working at the intersection of materials science, manufacturing, and digital technology.

You will play a critical role in supporting 24/7 production operations, partnering closely with manufacturing, quality, and materials teams to solve problems in real time while driving continuous improvement. This is a high‑impact, future‑oriented position within a growth industry and market leader, offering the opportunity to work alongside a strong team of experienced engineers and subject matter experts. You will contribute directly to advancing how materials are developed, evaluated, and optimized—helping shape the next generation of products and processes through innovation, sustainability, and the application of modern technology.

• Support daily material decision‑making for raw materials and blend silos to ensure manufacturing requirements (specifications, volumes, and availability) are consistently met.
• Develop and recommend material blending strategies, including batch deviations, silo assignments, and blend formulations to achieve required molded part performance.
• Partner closely with the Materials Processing team to manage the daily blending of recycled and virgin polymers, ensuring optimal use of wide‑spec and prime materials.
• Interpret polymer test data in collaboration with the in‑house lab and translate results into clear, actionable process and material adjustments.
• Evaluate incoming and purchased recycled materials; recommend sourcing decisions based on material properties, performance, and cost.
• Drive material cost optimization while maintaining strict adherence to part performance specifications.
• Provide technical expertise in PP/PE materials and recycled polymers, supporting both production and ongoing material development initiatives.
• Apply data‑driven and analytical approaches, including programming or automation tools where applicable, to improve material selection, blending decisions, and process efficiency.
• Maintain close collaboration with the in‑house polymer laboratory, ensuring effective use of testing capabilities to support rapid, informed decision‑making.
• Actively support 24/7 production operations, including availability to respond to critical material or process issues as needed.
• Continuously identify and implement opportunities for process improvement, material innovation, and increased operational efficiency across materials and manufacturing workflows.

• 3–5 years of hands‑on experience working with polypropylene (PP) and/or polyethylene (PE) materials in a manufacturing, R&D, or…