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Salary
≈ $101k – $200k per year (Estimated)
Location
In office (Mason)
Seniority
Principal · 13+ years exp
Visa
H-1B filings in 12 months: 5

Confirmed on the employer's own hiring board on Oct 12, 2026. First seen by Alion on Oct 12, 2026. L3Harris Technologies scores A on the Alion truth index.

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L3Harris Technologies is an American defense contractor formed in 2019 by the merger of L3 Technologies and Harris Corporation. It builds tactical radios and military communication systems, electronic warfare and intelligence, surveillance and reconnaissance equipment, space sensors and satellites, night vision devices, and uncrewed surface vessels, and owns the rocket engine maker Aerojet Rocketdyne. Its main customers are the United States Department of Defense and allied governments. The company is headquartered in Melbourne, Florida, United States.

Job Title: Manager, Mechanical Engineer

Job Code: 45595

Job Location: Mason, OH

Job Schedule: 9/80 - Employees work 9 out of every 14 days - totaling 80 hours worked - and have every other Friday off

Job Description:

We are seeking a motivated individual to join our team as the Manager, Mechanical Engineer, for IR Sensors. This position supports a variety of mission-critical programs with specific focus on sensor packaging design and analysis of electro-optical infrared camera assemblies and associated new technology development, sustaining engineering and manufacturing production. This challenging position will encompass a wide variety of assignments including CAD design, detailed finite element analysis, vendor and integration support, as well as hands-on hardware characterization and test.

Essential Functions:

  • Ability to obtain a U.S. Secret security clearance.
  • Possess a working understanding of hermetic dewar design and cryogenic cooling technologies, electronics packaging, material/process selection for UHV environments and common imager hardware integration and environmental climatic test techniques is highly desirable.
  • Responsible for creating detail component and assembly designs, analysis, manufacturing drawings and presentation material for internal / external customer design reviews that demonstrate conformance to all derived requirements and customer specifications.
  • Develop, review and approve engineering documentation, including product specifications, drawings, assembly procedures, and test plans. Perform, guide or review various types of advanced engineering analyses to characterize and validate proposed designs.
  • Support the assembly, integration and test of the product or prototype hardware.
  • Requires comprehensive level knowledge of job area. May have in-depth knowledge of project management.
  • Provide technical leadership and design oversight in support of existing product lines and new development efforts by interacting cross-functionally with various engineering disciplines, operations, supply chain, program management, customer representatives and vendors.
  • Interface with mechanical design engineers, manufacturing process engineers and operations personnel to streamline, problem solve and continuously improve product designs.
  • Interaction with manufacturing to ensure successful prototype design hand-off and production transition including support of test plans, fixture designs and work instructions.
  • Requirements development, coordination and tracking changes to Bill of Materials (BOM) and proper execution of design and analysis tasks in accordance with internal engineering processes and procedures.
  • Proposal support, basis of estimate creation and report / track task status in control account manager (CAM) role using earned value methods as needed.
  • Aerospace / Defense or equivalent industry is preferred.
  • Proficiency with computer design tools (Solidworks and/or PTC Windchill / CREO) is required.
  • Finite Element Analysis (FEA) experience for design is required (SolidWorks or ANSYS). Proficiency with structural, structural dynamics and/or thermal analyses is preferred. Experience in all is preferred.
  • Proficiency with GD&T and drawing standards is required.
  • Experience with Optics, lens design and common opto-mechanical alignment techniques is preferred.
  • Experience with electro-optical sensor packaging design, assembly and test is preferred.
  • Experience with Ultra High Vacuum (UHV) processing and cryogenic compressor design / production methods is desirable (not mandatory).
  • Strong technical problem solving skills and excellent project management / multi-tasking ability is required.
  • Knowledge of industry environmental test methods is preferred (MIL-STD-810G).
  • Familiarity with ASME Y14.5 drawing standards, fundamental GD&T and dimensional stack-up tolerances, basic machine shop metal working capabilities, common finishes & fabrication methods is required.
  • Must be a self-starter, versatile and adept at functioning in either lead or support role in small groups working on fast-paced projects encompassing initial conceptual product design all the way through transition to manufacturing production build. This may include detail design, light assembly, test verification, build support, thorough results documentation and task completion on schedule & within budget constraints.

Qualifications:

  • Bachelor’s Degree and minimum 9 years of prior relevant experience. Graduate Degree and a minimum of 7 years of prior related experience. In lieu of a degree, minimum of 13 years of prior related experience.

Preferred Additional Skills:

  • Department of War (DoW) security clearance is a plus.
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