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Associate, Mechanical Systems Engineer - Aircraft Systems; Greenville, TX

Job in Greenville, Hunt County, Texas, 75402, USA
Listing for: L3Harris Technologies
Full Time position
Listed on 2025-12-01
Job specializations:
  • Engineering
    Aerospace / Aviation / Avionics, Systems Engineer, Electrical Engineering, Mechanical Engineer
Job Description & How to Apply Below
Position: Associate, Mechanical Systems Engineer - Aircraft Systems (Greenville, TX)

Associate, Mechanical Systems Engineer - Aircraft Systems (Greenville, TX)

L3

Harris Technologies 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.

The role involves developing new aircraft systems or modifying existing aircraft systems to meet customer requirements. The engineer will use systems engineering tools and processes to support the full lifecycle of a variety of aircraft systems such as:
Environmental Control, Auxiliary Heat, Oxygen, Liquid Cooling, Environmental Monitoring, Moisture Control, Smoke Detection, Pitot/Static, Cabin Pressurization, Fuel, Ice protection, Air Cycle, Vapor Cycle, Potable Water, Mechanisms, Power Plants, and Hydraulics.

Responsibilities
  • Developing aircraft system requirements:
    Concept of Operations, System Specifications, Component Specifications, and System Schematics
  • Performing system analysis and modeling such as:
    Thermal/Heat Transfer Analysis, Flow/Pressure Drop Analysis, Component Sizing Analysis (Fan, Pump, Heat Exchanger, Valves), and Control System Architecture & Analysis
  • Performing verification and validation such as: creating test plans, creating test procedures, physically operating the system to perform ground and flight testing, writing certification reports
  • Supporting technical publications by providing source data and reviewing publications such as system operating manuals, maintenance manuals, instructions for continued airworthiness
  • Supporting periodic travel for Technical Interchange Meetings, Program Reviews, Testing, and Aircraft Field Support
  • Proficient computer skills (Microsoft Office tools: Word, Excel, PowerPoint, Visio)
  • Proficient communication skills (verbal, written, slide presentations)
  • Proficient technical writing skills (specifications, procedures, reports)
  • Performing hands-on testing and troubleshooting of aircraft electrical and mechanical systems; requires climbing and crawling on the aircraft in confined areas to perform duties
  • Capable of passing flight certification requirements:
    Flight Physical, Altitude Chamber, Ground Survival Training, Water Survival Training
  • Understanding and supporting the aircraft certification process (Civil: 14

    CFR Part 25 and 23; Military: MIL-HDBK-516)
  • Interpreting and using aircraft technical documentation such as system schematics, mechanical drawings, electrical drawings, aircraft technical publications, Standards (MIL, SAE, RTCA, 14

    CFR, etc.)
Qualifications
  • Requires Bachelor degree in Mechanical or Aerospace Engineering with 0-2 years relevant experience in the aerospace industry or an equivalent combination of education and experience may also be considered.
Preferred Additional Skills
  • Experience with requirement management tools (DOORS, MBSE tools such as Magic Draw-Cameo systems modeler)
  • Experience with system analysis and modeling tools (Macroflow, ANSYS Fluent/CFX, MSC Easy 5, Sinda Fluint, High level Microsoft Excel functions & Macros)
  • Experience with Environmental Qualification (Temp, Alt, Humidity, Icing, Shock, Vibe, etc.)
About and Compliance

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…

Position Requirements
10+ Years work experience
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