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1–2 jobs· newest first

Injection Mold Design Engineer
Primoris Services Corporation · Dallas, US
Full-time · Mid
Sr. Tooling Engineer
Silgan Dispensing Systems · Thomaston, US
Senior

+10K new in the last hour

Injection Mold Design Engineer

Primoris Services Corporation · Posted Sep 11, 2026

Dallas, Texas, United States
Full-time · Mid
3+ years

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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.

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 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, 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.

Requirements

Bachelor’s degree in Mechanical Engineering
Plastics Engineering
Polymer Engineering
Materials Science
Manufacturing Engineering

Skills

injection molding overmolding insert molding tooling design polymer material selection molded-product development engineered thermoplastics elastomers high-temperature polymers UV/outdoor-rated materials flame-rated materials electrically insulating materials mold design principles material datasheets

Benefits

Paid Company Holidays
Paid Time Off
Medical
Dental
Vision

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Sr. Tooling Engineer

Silgan Dispensing Systems · Posted Oct 30, 2026

Thomaston, Connecticut, United States
Senior
3+ years

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Senior Tooling Engineer to support plastics injection molding operations.

Responsibilities

Design and develop new tooling and fixtures to support plastics injection molding production.
Improve existing tooling and fixtures to enhance efficiency, product quality, and cost-effectiveness.
Collaborate with design and manufacturing engineers to ensure new products are designed for manufacturability.
Select appropriate materials, finishes, coatings, and heat treatments for tooling based on application requirements.
Specify tolerances for machined parts and assemblies, ensuring compliance with GD&T standards.

Requirements

Bachelor of Science degree
Nice to have: hot runner systems
Nice to have: multi-cavity mold design
Nice to have: scientific molding practices
Nice to have: toolmakers

Skills

mold design troubleshooting process optimization CAD software SolidWorks

UL Yellow Cards

dielectric strength

f1/f2 outdoor ratings

thermal aging considerations

mold flow analysis

mold design principles

mold flow analysis tools

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