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Senior Specialist, Mechanical Engineering; Thermal Security Clearance

Job in Fort Wayne, Allen County, Indiana, 46801, USA
Listing for: L3Harris Technologies
Full Time position
Listed on 2026-06-03
Job specializations:
  • Engineering
    Aerospace / Aviation / Avionics, Systems Engineer, Electrical Engineering, Mechanical Engineer
Job Description & How to Apply Below
Position: Senior Specialist, Mechanical Engineering (Thermal) with Security Clearance
L3

Harris is dedicated to recruiting and developing high-performing talent who are passionate about what they do. Our employees are unified in a shared dedication to our customers' mission and quest for professional growth. L3

Harris provides an inclusive, engaging environment designed to empower employees and promote work-life success. Fundamental to our culture is an unwavering focus on values, dedication to our communities, and commitment to excellence in everything we do. L3

Harris is the Trusted Disruptor in defense tech. With customers' mission-critical needs always in mind, our employees deliver end-to-end technology solutions connecting the space, air, land, sea and cyber domains in the interest of national security.

Job Title:

Senior Specialist, Mechanical Engineering (Thermal Analyst) Job Code: 38398

Job Location:

Fort Wayne, IN

Job Schedule:

9/80 (Every other Friday off)

Job Description:

L3

Harris is seeking a Thermal Analyst for spaceborne precision optics, mirrors and cryogenic optical systems for IR payloads. This role includes completing thermal analysis of entire payloads as well as detailed module analysis and support of the thermal architecture development and supporting trade studies. This role will include leading small teams of thermal analysts in accomplishing the above assignments. The role includes thermal analysis of circuit cards and chassis with medium to high thermal density in Spaceborne applications.

Essential Functions:

* Responsible for thermal analysis of precision optics for IR payloads including optical mirrors, mirror mounts, windows, filters, focal plane mounts and telescopes for cryogenic applications.

* Collaborate with design engineering and test engineering for the build and test of subsystems and payloads.

* Leadership of thermal analysis teams for IR payloads and mechanical subsystems

* Author thermal analysis sections of PDRs, CDRs, and other required design reviews

* Author thermal analysis sections of CDRL's and SDRL's and other compliance documents for customers.

* Assist with schedule, cost, and technical leadership of major subsystems and payloads

* Complete cost estimation of thermal analysis BOE's for proposals

* Participate in risk assessment and development of mitigation strategies for complex optical payloads.

* Collaborate across functions to minimize gaps in requirements, responsibilities and payload performance.

* Ability to obtain and maintain DOD Security Clearance

* Up to 20% of travel may be required

Qualifications:

* Bachelor's Degree in STEM and minimum 6 years of prior relevant experience. Graduate Degree and a minimum of 4 years of prior related experience. In lieu of a degree, minimum of 10 years of prior related experience.

* 4+ years experience in thermal analysis and testing for space environments (temperature and vacuum)

* Experience with thermal analysis of optical elements for optical distortion due to thermal stresses

* Experience with leading thermal vacuum test events and fixture analysis efforts

* Experience with Thermal Desktop (TD) thermal analysis tool

* Experience in 3D CAD design Preferred Additional

Skills:

* Experience with circuit card and chassis level thermal analysis for Space

* Experience with Creo 4 or Solidworks

* Prior IR/cryogenic optical / thermal analysis experience including STOP analysis.

* Prior experience in developing thermal control structures and systems such as Radiators, heat pipes networks, thermal straps, cryocoolers or thermal sub-assemblies is strongly desired

* Prior experience doing thermal analysis of optical payloads supporting the optimization of heat rejection, power consumption and low mass. #LI-KB1 L3

Harris Technologies is proud to be an Equal Opportunity Employer. L3

Harris is committed to treating all employees and applicants for employment with respect and dignity and maintaining a workplace that is free from unlawful discrimination. All applicants will be considered for employment without regard to race, color, religion, age, national origin, ancestry, ethnicity, gender (including pregnancy, childbirth, breastfeeding or other related medical conditions), gender identity, gender expression, sexual orientation, marital status, veteran status, disability, genetic information, citizenship status, characteristic or membership in any other group protected by federal, state or local laws.

L3

Harris maintains a drug-free workplace and performs pre-employment substance abuse testing and background checks, where permitted by law. Please be aware many of our positions require the ability to obtain a security clearance. Security clearances may only be granted to U.S. citizens. In addition, applicants who accept a conditional offer of employment may be subject to government security investigation(s) and must meet eligibility requirements for access to classified information.

By submitting your resume for this position, you understand and agree that L3

Harris Technologies may share your resume, as well as any other related personal…
Position Requirements
10+ Years work experience
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