[Skip to main content](#main-content) [OpenNash Jobs](https://jobs.opennash.com/) [Hiring report](/reports/hiring/) · [All L3Harris Technologies jobs](https://jobs.opennash.com/companies/l3harris-technologies/) · [Search jobs](/search/) L3Harris Technologies · Palm Bay, FL # Sr Specialist, Thermal Analyst Mechanical Engineer (Space Systems) Palm Bay, FL, US Full-time Senior individual contributor {'@type': 'MonetaryAmount', 'currency': '', 'value': {'@type': 'QuantitativeValue', 'unitText': ''}} Skilled Trades & Maintenance Listed on L3Harris Technologies’s official careers site. Posted September 29, 2026. Check that it is still open and apply there. [Apply on L3Harris Technologies’s careers site →](https://careers.l3harris.com/en/job/palm-bay/sr-specialist-thermal-analyst-mechanical-engineer-space-systems/4832/101313772512) [OpenNash Jobs](https://jobs.opennash.com/) / [L3Harris Technologies](https://jobs.opennash.com/companies/l3harris-technologies/) / Sr Specialist, Thermal Analyst Mechanical Engineer (Space Systems) ## Job description L3Harris 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. L3Harris 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. L3Harris 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 Sr Specialist, Thermal Analyst Mechanical Engineer (Space Systems) ### Job Code 45305 Job Location: Palm Bay, FL Job Schedule: 9/80 - Employees work 9 out of every 14 days- totaling 80 hours worked- and have every other Friday off Relocation: Relocation assistance is available to qualified applicants Job Description: L3Harris has an opportunity for a highly skilled Thermal Analyst to join our talented engineering organization. The Thermal Analyst will be a technical leader across multidisciplinary teams of engineers to create the best overall system design including thermal design, analysis, and test of optical systems operating in harsh space and ground environments. The candidate will possess in-depth understanding of aerospace thermal engineering technology and payload architecture for spacecraft sub-systems and instruments. These talents are used in conductive, convective, and radiative analyses, understanding of heat pipes, radiative heat transfer, and thermal control hardware design (thermal blankets, surface treatments, heater tapes, thermistors) and the interaction with optical structures in order to minimize optical errors, and achieve operational temperatures. The role requires utilizing state of the art custom software in conjunction with Thermal Desktop and Finite Element Analysis (FEA) packages and often mentor other Thermal Analysts in the use of such tools. ### Essential Functions System level thermal design & development, payload level integration and test, and risk mitigation for space-based environments - Performs thermal design and analysis tasks on complex space-based mechanical hardware including structural components, mechanisms, and electronics packaging - Create and analyze design concepts using thermal analysis software & FEA. Defines and establishes the technical approach to meet assigned objective. Program support which includes requirements derivation and verification, system architecture development, loads derivation, trade studies, design sensitivity/optimization studies, preliminary and final design analysis, generation of analysis documentation (including presentation materials, and deliverable data packages), and leading system test activities Prepares reports, formal documentation and presentation materials summarizing analysis results and present results to both external and internal groups, including leadership and customers. Participates in and present information for Preliminary Design reviews (PDR), Critical Design Reviews (CDR) and Technical Interchange Meetings (TIM). Interfaces with outside suppliers/customers and other engineering disciplines to drive designs to closure (Structural, Systems Engineering, Electrical, Manufacturing, Performance, Quality, Configuration Management). Development of thermal test plans to manufacture and test payload sensor systems - Support new business opportunities - Work multiple tasks in a fast-paced environment and adapt quickly to changing situations - Ability to obtain and maintain a U.S. TS/SCI security clearance. ### Qualifications Bachelor’s degree in Mechanical Engineering or a related engineering or science field with 6 years of experience, or a master’s degree in Mechanical Engineering or a related engineering or science field with 4 years of experience. In lieu of a degree, minimum of 10 years of prior related experience. 3+ years of professional experience using thermal analysis tools such as Thermal Desktop (required) and other tools such as FloTHERM. 3+ years of professional experience leading a multidisciplinary mechanical engineering team through system requirements, design, analysis, testing, hardware build, delivery, and launch. Professional experience performing thermal analysis of mechanical and electronic systems in space environments Preferred Additional Skills: Experience supporting programs through requirements derivation and verification, system and component architecture development, design sensitivity and optimization studies, preliminary and final design analyses, report generation, and leading test activities. Experience preparing reports, formal documentation, and presentation materials that summarize analysis results for both internal and external audiences, including leadership and customers. Experience working with outside suppliers, customers, and cross-functional engineering teams, including Structural, Systems, Electrical, Manufacturing, Performance, Quality, and Configuration Management. Thermal test experience, including Thermal Vacuum (TVAC) and Thermal Cycle testing, with involvement in test design, procedure development, test analysis, onsite test support, and thermal model correlation. #LI-RK1 L3Harris Technologies is proud to be an Equal Opportunity Employer. L3Harris 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. L3Harris 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 L3Harris Technologies may share your resume, as well as any other related personal information or documentation you provide, with its subsidiaries and affiliated companies for the purpose of considering you for other available positions. L3Harris Technologies is an E-Verify Employer. Please click here for the E-Verify Poster in English or Spanish. For information regarding your Right To Work, please click here for English or Spanish. ## At a glance - Posted by the employer: Sep 29, 2026 - First seen by OpenNash: Oct 12, 2026 - Last checked: Oct 19, 2026 - Listed for: 20 days - Location: Palm Bay, FL, US - Employment type: Full-time - Pay: {'@type': 'MonetaryAmount', 'currency': '', 'value': {'@type': 'QuantitativeValue', 'unitText': ''}}[Apply on L3Harris Technologies’s careers site →](https://careers.l3harris.com/en/job/palm-bay/sr-specialist-thermal-analyst-mechanical-engineer-space-systems/4832/101313772512) ## More jobs at L3Harris Technologies ### [Associate, Mechanical Engineering (Palm Bay, FL)](https://jobs.opennash.com/companies/l3harris-technologies/jobs/990c37ed98045070fdf2/) Palm Bay, FL, US ### [Engineering Technician C](https://jobs.opennash.com/companies/l3harris-technologies/jobs/2f34e7099c7aa155b778/) Palm Bay, FL, US ### [Engineering Technician D](https://jobs.opennash.com/companies/l3harris-technologies/jobs/6e72a573154c3fa5c73f/) Palm Bay, FL, US ### [Senior Specialist, Mechanical Engineer](https://jobs.opennash.com/companies/l3harris-technologies/jobs/7d3ff7eebc184a2564ca/) Palm Bay, FL, US ### [Specialist, Mechanical Engineer](https://jobs.opennash.com/companies/l3harris-technologies/jobs/e47d54b8399e7e788f99/) Palm Bay, FL, US ## Similar jobs at other companies ### [Prin Mechanical Engineer (SRM - Thermal Analyst) (Remote Option Available)](https://jobs.opennash.com/companies/general-dynamics/jobs/2b9de80561fcbf56ed02/) General Dynamics · Huntsville, AL, US ### [Sr Prin Mechanical Engineer (Thermal Analysis) (SRM)](https://jobs.opennash.com/companies/general-dynamics/jobs/65c3059a9186e265b5bf/) General Dynamics · Huntsville, AL, US ### [Thermal Mechanical Engineer - Level 2/3 - Dulles](https://jobs.opennash.com/companies/northrop-grumman/jobs/db23afe8edf08b068959/) Northrop Grumman · United States-Virginia-Dulles ### [Senior Mechanical Engineer - Structural/Thermal Analysis](https://jobs.opennash.com/companies/bae-systems/jobs/737790bde244cbff3f1e/) BAE Systems · Merrimack, New Hampshire, United States ### [Thermal Mechanical Engineer - Bay Area](https://jobs.opennash.com/companies/ecolab/jobs/5a1535fb0bc0ee0da107/) Ecolab · San Jose, California, United States of America OpenNash lists jobs from employers’ own careers sites and does not handle applications. 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