Sr. Mechanical Engineer

ALTEN Technology USA • Longmont, CO

1d • $140,000 - $200,000

About The Position

We’re ALTEN Technology USA, an engineering company helping clients bring groundbreaking ideas to life—from advancing space exploration and life-saving medical devices to building autonomous electric vehicles. With 3,000+ experts across North America, we partner with leading companies in aerospace, medical devices, robotics, automotive, commercial vehicles, EVs, rail, and more.
As part of the global ALTEN Group—57,000+ engineers in 30 countries—we deliver across the entire product development cycle, from consulting to full project outsourcing.
When you join ALTEN Technology USA, you’ll collaborate on some of the world’s toughest engineering challenges, supported by mentorship, career growth opportunities, and comprehensive benefits. We take pride in fostering a culture where employees feel valued, supported, and inspired to grow.
As Senior Mechanical Engineer you will be responsible for;

Requirements

• Bachelor’s degree in Mechanical Engineering or related field
• 10-20+ years of experience in mechanical design (level flexible based on candidate)
• Experience with precision mechanical design and tight tolerance assemblies in rugged environments
• Proficiency in CAD tools (SolidWorks preferred)
• Strong understanding of GD&T and tolerance stack-up analysis
• Experience working in cross-functional engineering environments

Nice To Haves

• Experience with thermal, structural, and or dynamic analysis of optical-mechanical systems a plus

Responsibilities

• Design and develop precision mechanical components and assemblies for opto-mechanical systems
• Support integration of optical elements including lenses, mirrors, and laser paths into mechanical structures
• Develop and refine pointing and stabilization mechanisms (e.g., gimbals, mounts, precision actuation systems)
• Perform tolerance analysis (GD&T) to ensure optical alignment and system performance
• Collaborate cross-functionally with optical, electrical, and systems engineering teams
• Support prototype builds, testing, and validation, including troubleshooting and design iteration
• Ensure designs meet ruggedization requirements (shock, vibration, thermal stability)

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level
• Number of Employees: 251-500 employees