Listing evidence and provenance
- Source
- Workday View original listing
- Freshness
- Open in the current public read path; this is not an employer guarantee.Last observed October 5, 2026
- Classification
- Modern power-system classification not yet published for this listing.Legacy source industry field: Transmission & Distribution
- Pay provenance
- Estimated benchmark; not employer-provided
Job Description
The Injection Mold Design Engineer is responsible for material selection, injection molding design, tooling feasibility, process development support, and molded-product reliability for Premier PV’s solar eBOS products.
Key Responsibilities
- Serve as Premier PV’s Design Engineer supporting Engineering Managers for injection molding, overmolding, insert molding, resin selection, moldability, and molded-product architecture.
- Support design and development of overmolded PV harness products, inline fuse assemblies, molded strain reliefs, connector interfaces, molded housings, and related eBOS product components.
- Evaluate and recommend polymer/material systems including PPS, PPA, TPV, LSR, PP-based compounds, thermally conductive electrically insulating compounds, and other engineered materials for outdoor PV use.
- Review and interpret material properties including RTI, UL Yellow Card data, f1/f2 outdoor suitability, dielectric strength, CTI, flammability, water absorption, thermal conductivity, shrink rate, mechanical strength, and long-term aging behavior.
- Assist with mold design input for gate location, runner strategy, parting line, venting, flash control, weld-line risk, wire positioning, insert retention, wall thickness, draft, ribs, bosses, radii, and dimensional stability.
- Perform or review moldflow, shrink/warpage, filling, packing, cooling, and process-window analysis for new and existing molded products.
- Support UL 9703, UL 1741, UL 6703, UL 746C, UL 94, and other applicable certification or listing activities as they relate to molded assemblies and polymer materials.
- Work with NRTL/test agencies, suppliers, and internal engineering teams to define test plans, pre-compliance reviews, construction packages, and material-rating justifications.
- Develop tooling specifications, supplier RFQs, mold acceptance criteria, first-article inspection requirements, and production readiness checklists.
- Partner with manufacturing, quality, sourcing, and operations to improve DFM, DFS, DFI, cost, cycle time, yield, reliability, and repeatability.
- Partner with Design Engineering Manager to create and maintain internal design standards, material-selection guides, mold-design checklists, validation templates, and lessons-learned documentation.
Requirements
- Bachelor’s degree in Mechanical Engineering, Plastics Engineering, Polymer Engineering, Materials Science, Manufacturing Engineering, or related technical discipline.
- 3- 5+ years of experience in injection molding, overmolding, insert molding, tooling design, polymer material selection, or molded-product development.
- Intermediate understanding of engineered thermoplastics, elastomers, high-temperature polymers, UV/outdoor-rated materials, flame-rated materials, and electrically insulating materials.
- Experience with molded products used in electrical, outdoor, automotive, renewable energy, industrial, or high-reliability applications.
- Working knowledge of mold design principles including gate/runner design, venting, parting lines, cooling, shrink/warpage, flash control, draft, wall thickness, ribs, bosses, and dimensional tolerancing.
- Intermediate understanding of material datasheets, UL Yellow Cards, RTI, CTI, dielectric strength, UL 94, f1/f2 outdoor ratings, and thermal aging considerations.
- Ability to evaluate molded assemblies for thermal, mechanical, electrical, environmental, and manufacturability risks.
- Experience working with suppliers, toolmakers, molders, resin manufacturers, test labs, and cross-functional product teams.
- Strong documentation discipline, technical communication skills, and ability to explain complex material/tooling decisions to engineering, quality, sourcing, manufacturing, and leadership teams.
Benefits & Perks
- Paid Company Holidays
- Paid Time Off
- Medical, Dental, Vision, FSA/HSA, Short Term/Long Term Disability
- 401K with matching contribution.
Ready to Apply?
Apply directly on Primoris's site
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