Product Development Engineer II — Optics & Firearms

Primary Arms LLC; Houston (TX); On-site; USD 90,000 - 120,000; Full time

Job summary

Primary Arms Optics in Houston, TX, is seeking a Full Time Mechanical Engineer (Ind Contributor) to design and develop new optics products using SolidWorks, collaborating with senior engineers to deliver reliable solutions.

You will own GD&T, tolerance analysis, and fixture design to optimize manufacturing and inspection, while building workflows for engineering, QA, and assembly. Travel up to 15% is possible.

Qualifications

• Bachelor's degree in Mechanical Engineering or equivalent experience.
• 3–5 years of experience in the firearms and/or optics industry.
• Strong proficiency in SolidWorks for modeling and drafting.

Responsibilities

• Design new products in SolidWorks and collaborate with cross‑functional teams.
• Improve existing products through redesign, evaluation, and manufacturing optimization.
• Create precise engineering drawings meeting ANSI standards, apply GD&T and tolerance analysis.
• Design fixturing and tooling to speed assembly and inspection.
• Own documentation and processes for engineering, quality control, and assembly.
• Lead root‑cause analysis on product issues with vendors and internal teams.
• Build and validate prototypes with prototype shops to keep development moving.
• Collaborate in 3D modeling to integrate mechanical and optical components.
• Manage inspection equipment, calibration, and organization of tools and prototypes.
• Provide technical support across manufacturing, purchasing, marketing, and suppliers.

Skills

SolidWorks

GD&T

Tolerance analysis

Manufacturing processes

Dimensional inspection

Project management

Education

Bachelor's degree in Mechanical Engineering

Tools

SolidWorks

Job description

Primary Arms Optics in Houston, TX, is seeking a Full Time Mechanical Engineer (Ind Contributor) to design and develop new optics products using SolidWorks, collaborating with senior engineers to deliver reliable solutions.

You will own GD&T, tolerance analysis, and fixture design to optimize manufacturing and inspection, while building workflows for engineering, QA, and assembly. Travel up to 15% is possible.