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3 senior thermal engineer jobs found in Longmont, CO

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Longmont senior thermal engineer Colorado
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VS
Sep 08, 2026
Full time
Project Engineer II
$85,000 - $130,000 yearly
Vitesse Systems Longmont, CO
Vitesse Systems is looking for a Project Engineer II to join the team in Longmont, Colorado! The Project Engineer unites a team to innovate and deliver extraordinary antenna solutions within the customer's parameters. About Vitesse Systems Vitesse Systems is a leading provider of highly engineered antenna, thermal management and mission critical solutions used in radar, electronic warfare and C5ISR applications. No challenge is too difficult for the Vitesse Team. From complex specification driven requirements to precision manufactured components, Vitesse Systems has the experience and expertise needed to execute. Our Core Values Our core values of Integrity, Initiative, Impact, and Integration translate to an environment where every team member is valued and rewarded. The mission-critical solutions we design and manufacture at Vitesse make our country and our world safer. Our Benefits 3 Weeks of Paid Time Off 10 Paid Company Observed Holidays Birthday &...
At
Sep 08, 2026
Full time
Engineering Manager
$120,000 - $202,500 yearly
Attalon Longmont, CO
Attalon / Location Overview Attalon is a leading technology partner to the global aerospace and defense industry, specializing in the physics of light and heat. With over 500 employees in the U.S., Attalon engineers critical optical, laser, and coating technologies that enable systems to see farther, target faster, and survive the harshest environments. From high-energy directed laser systems to satellite optics and hypersonic thermal protection, Attalon equips the warfighter with the advantage of precision. Located along Colorado's scenic Front Range and nestled in the foothills of the Rocky Mountains, Longmont offers a high quality of life, breathtaking natural beauty, and easy access to outdoor recreation, making it the perfect place to balance work and play. This role is an on-site position based in Longmont, CO. Our Laser and Gimbal Systems Division focuses on building high energy lasers and precision opto-mechanical assemblies for the defense market, supporting critical...
nL
Apr 12, 2026
Full time
Sr. Mechanical Engineer
nLIGHT Longmont, CO
Description Location: Longmont, CO (onsite) Experience: A minimum of 5+ years of experience working in opto-mechanical system design and integration. Minimum Education: Bachelor's Degree in Mechanical, Electrical or Optical Engineering, or related technical field. Compensation: $140,000-$180,000 depending on experience. Who We Are nLIGHT-DEFENSE Systems, Inc. is one of the nation's leading developers of Directed Energy systems, which is a top modernization priority of the Department of Defense. Our High Energy Laser (HEL) systems, Adaptive Optical (AO) systems, and Acquisition / Pointing / Tracking (APT) solutions are designed to overcome the most difficult challenges facing the deployment of high energy laser solutions to the United States military and our allies. Located in Longmont, Colorado, nLIGHT-DEFENSE Systems, Inc. is a vertically integrated business that leverages internal capabilities - from semiconductor device through target identification - to...
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