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Principal, Mechanical Design Engineer

L3Harris Technologies

Principal, Mechanical Design Engineer

full-timePosted: Jan 16, 2026

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 Technologies is the Trusted Disruptor in the defense industry. 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: Principal, Mechanical Design Engineer

Job ID: 32576

Job Location: Orlando, FL

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

Job Description:

L3Harris is seeking an experienced Principal, Mechanical Design Engineer in our Orlando, FL location. The selected individual will manage large, complex project initiatives of substantial importance to the organization, while working with and providing guidance to a team of mechanical engineers.  This individual must be capable of devising solutions to complex engineering problems both independently and by soliciting input from other technical subject matter experts across the organization.

The Mechanical Design Engineer will work independently as well as working with other stakeholders to provide technical direction that will drive the success of all programs at Coleman.  This typically includes working closely with internal and external customers while guiding our team of mechanical engineers.  May be personally responsible for portions of the design and documentation efforts.

Essential Functions:

  • Ability to create and guide the development of aerospace structure designs including structure assemblies, component installations, and bracket designs that conform to requirements documents. Ability to assist in requirements verification of those designs.
  • Ability to communicate, both verbally and in writing, with technical and non-technical professionals at all levels.
  • Experience with aerospace flight vehicle design.
  • Research and analyze data such as customer design proposals, specifications, and manuals to determine feasibility of design or application.
  • Research, plan, design, and provide guidance to other engineers for mechanical and electromechanical products and systems.
  • Analyze, design and test products or systems such as instruments, controls, and mechanical, thermal, hydraulic, or heat transfer systems.
  • Ability to serve as a GD&T SME for the organization.
  • Proficiency in preparing conceptual models and design review materials. Understanding of mechanical analysis requirements and techniques used for initial sizing and design verification.
  • Plan and possibly direct engineering personnel in fabrication of test control apparatus and equipment, and development of methods and procedures for testing products or systems
  • Detail-oriented and able to perform Peer Reviews of fellow engineers’ designs and drawings.
  • Position may require occasional overtime.
  • 20% travel (10 - 20%) as required to meet critical schedule milestones.
  • Ability to obtain US security clearance.

Qualifications:

  • Bachelor’s Degree and minimum 12 years of prior mechanical design engineering experience. Graduate Degree and a minimum of 10 years of prior mechanical design engineering experience. In lieu of a degree, minimum of 16 years of prior mechanical design engineering experience.

Preferred Additional Skills:

  • 5+ years of experience with basic material selection, sheet metal design practices, basic machining practices and hardware selection.Proficiency with PTC’s Creo 8.0 or later revision, especially with detail part design, large assembly management and drawing documentation.
  • Proficiency and experience with ASME Y14.5-1994 and generating detailed documentation of parts, assemblies and installations.
  • Proficiency in non-conforming material review of root cause / corrective action and disposition instructions.
  • Proficiency with hands-on engineering support of manufacturing.
  • Proficiency in design of mechanical ground support equipment and handling procedures / methods.
  • Experience in preparation of estimates for design tasks.
  • Ability to prepare or lead the preparation of part lists.
  • Knowledge of engineering change document preparation and impact assessments.

#LI-HW1

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.

Locations

  • Orlando, FL, United States

Salary

Estimated Salary Rangemedium confidence

95,000 - 155,000 USD / yearly

Source: AI Estimation

* This is an estimated range based on market data and may vary based on experience and qualifications.

Skills Required

  • Ability to create and guide the development of aerospace structure designs including structure assemblies, component installations, and bracket designsintermediate
  • Ability to communicate verbally and in writing with technical and non-technical professionalsintermediate
  • Experience with aerospace flight vehicle designintermediate
  • Research and analyze data such as customer design proposals, specifications, and manualsintermediate
  • Research, plan, design, and provide guidance to other engineers for mechanical and electromechanical products and systemsintermediate
  • Analyze, design and test products or systems such as instruments, controls, and mechanical, thermal, hydraulic, or heat transfer systemsintermediate
  • Serve as a GD&T SMEintermediate
  • Proficiency in preparing conceptual models and design review materialsintermediate
  • Understanding of mechanical analysis requirements and techniquesintermediate
  • Plan and direct engineering personnel in fabrication of test control apparatus and equipmentintermediate
  • Perform Peer Reviews of fellow engineers’ designs and drawingsintermediate
  • 5+ years of experience with basic material selection, sheet metal design practices, basic machining practices and hardware selectionintermediate
  • Proficiency with PTC’s Creo 8.0 or later revision, especially with detail part design, large assembly management and drawing documentationintermediate
  • Proficiency and experience with ASME Y14.5-1994 and generating detailed documentationintermediate
  • Proficiency in non-conforming material review of root cause / corrective action and disposition instructionsintermediate
  • Proficiency with hands-on engineering support of manufacturingintermediate
  • Proficiency in design of mechanical ground support equipment and handling procedures / methodsintermediate
  • Experience in preparation of estimates for design tasksintermediate
  • Ability to prepare or lead the preparation of part listsintermediate
  • Knowledge of engineering change document preparation and impact assessmentsintermediate

Required Qualifications

  • Bachelor’s Degree and minimum 12 years of prior mechanical design engineering experience (experience)
  • Graduate Degree and a minimum of 10 years of prior mechanical design engineering experience (experience)
  • In lieu of a degree, minimum of 16 years of prior mechanical design engineering experience (experience)
  • Ability to obtain US security clearance (experience)

Responsibilities

  • Manage large, complex project initiatives of substantial importance to the organization
  • Provide guidance to a team of mechanical engineers
  • Devise solutions to complex engineering problems independently and with technical subject matter experts
  • Provide technical direction to drive success of all programs
  • Work closely with internal and external customers
  • Personally responsible for portions of the design and documentation efforts
  • Assist in requirements verification of designs

Benefits

  • general: Employees work 9 out of every 14 days – totaling 80 hours worked – and have every other Friday off
  • general: Inclusive, engaging environment designed to empower employees and promote work-life success

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L3Harris Technologies logo

Principal, Mechanical Design Engineer

L3Harris Technologies

Principal, Mechanical Design Engineer

full-timePosted: Jan 16, 2026

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 Technologies is the Trusted Disruptor in the defense industry. 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: Principal, Mechanical Design Engineer

Job ID: 32576

Job Location: Orlando, FL

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

Job Description:

L3Harris is seeking an experienced Principal, Mechanical Design Engineer in our Orlando, FL location. The selected individual will manage large, complex project initiatives of substantial importance to the organization, while working with and providing guidance to a team of mechanical engineers.  This individual must be capable of devising solutions to complex engineering problems both independently and by soliciting input from other technical subject matter experts across the organization.

The Mechanical Design Engineer will work independently as well as working with other stakeholders to provide technical direction that will drive the success of all programs at Coleman.  This typically includes working closely with internal and external customers while guiding our team of mechanical engineers.  May be personally responsible for portions of the design and documentation efforts.

Essential Functions:

  • Ability to create and guide the development of aerospace structure designs including structure assemblies, component installations, and bracket designs that conform to requirements documents. Ability to assist in requirements verification of those designs.
  • Ability to communicate, both verbally and in writing, with technical and non-technical professionals at all levels.
  • Experience with aerospace flight vehicle design.
  • Research and analyze data such as customer design proposals, specifications, and manuals to determine feasibility of design or application.
  • Research, plan, design, and provide guidance to other engineers for mechanical and electromechanical products and systems.
  • Analyze, design and test products or systems such as instruments, controls, and mechanical, thermal, hydraulic, or heat transfer systems.
  • Ability to serve as a GD&T SME for the organization.
  • Proficiency in preparing conceptual models and design review materials. Understanding of mechanical analysis requirements and techniques used for initial sizing and design verification.
  • Plan and possibly direct engineering personnel in fabrication of test control apparatus and equipment, and development of methods and procedures for testing products or systems
  • Detail-oriented and able to perform Peer Reviews of fellow engineers’ designs and drawings.
  • Position may require occasional overtime.
  • 20% travel (10 - 20%) as required to meet critical schedule milestones.
  • Ability to obtain US security clearance.

Qualifications:

  • Bachelor’s Degree and minimum 12 years of prior mechanical design engineering experience. Graduate Degree and a minimum of 10 years of prior mechanical design engineering experience. In lieu of a degree, minimum of 16 years of prior mechanical design engineering experience.

Preferred Additional Skills:

  • 5+ years of experience with basic material selection, sheet metal design practices, basic machining practices and hardware selection.Proficiency with PTC’s Creo 8.0 or later revision, especially with detail part design, large assembly management and drawing documentation.
  • Proficiency and experience with ASME Y14.5-1994 and generating detailed documentation of parts, assemblies and installations.
  • Proficiency in non-conforming material review of root cause / corrective action and disposition instructions.
  • Proficiency with hands-on engineering support of manufacturing.
  • Proficiency in design of mechanical ground support equipment and handling procedures / methods.
  • Experience in preparation of estimates for design tasks.
  • Ability to prepare or lead the preparation of part lists.
  • Knowledge of engineering change document preparation and impact assessments.

#LI-HW1

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.

Locations

  • Orlando, FL, United States

Salary

Estimated Salary Rangemedium confidence

95,000 - 155,000 USD / yearly

Source: AI Estimation

* This is an estimated range based on market data and may vary based on experience and qualifications.

Skills Required

  • Ability to create and guide the development of aerospace structure designs including structure assemblies, component installations, and bracket designsintermediate
  • Ability to communicate verbally and in writing with technical and non-technical professionalsintermediate
  • Experience with aerospace flight vehicle designintermediate
  • Research and analyze data such as customer design proposals, specifications, and manualsintermediate
  • Research, plan, design, and provide guidance to other engineers for mechanical and electromechanical products and systemsintermediate
  • Analyze, design and test products or systems such as instruments, controls, and mechanical, thermal, hydraulic, or heat transfer systemsintermediate
  • Serve as a GD&T SMEintermediate
  • Proficiency in preparing conceptual models and design review materialsintermediate
  • Understanding of mechanical analysis requirements and techniquesintermediate
  • Plan and direct engineering personnel in fabrication of test control apparatus and equipmentintermediate
  • Perform Peer Reviews of fellow engineers’ designs and drawingsintermediate
  • 5+ years of experience with basic material selection, sheet metal design practices, basic machining practices and hardware selectionintermediate
  • Proficiency with PTC’s Creo 8.0 or later revision, especially with detail part design, large assembly management and drawing documentationintermediate
  • Proficiency and experience with ASME Y14.5-1994 and generating detailed documentationintermediate
  • Proficiency in non-conforming material review of root cause / corrective action and disposition instructionsintermediate
  • Proficiency with hands-on engineering support of manufacturingintermediate
  • Proficiency in design of mechanical ground support equipment and handling procedures / methodsintermediate
  • Experience in preparation of estimates for design tasksintermediate
  • Ability to prepare or lead the preparation of part listsintermediate
  • Knowledge of engineering change document preparation and impact assessmentsintermediate

Required Qualifications

  • Bachelor’s Degree and minimum 12 years of prior mechanical design engineering experience (experience)
  • Graduate Degree and a minimum of 10 years of prior mechanical design engineering experience (experience)
  • In lieu of a degree, minimum of 16 years of prior mechanical design engineering experience (experience)
  • Ability to obtain US security clearance (experience)

Responsibilities

  • Manage large, complex project initiatives of substantial importance to the organization
  • Provide guidance to a team of mechanical engineers
  • Devise solutions to complex engineering problems independently and with technical subject matter experts
  • Provide technical direction to drive success of all programs
  • Work closely with internal and external customers
  • Personally responsible for portions of the design and documentation efforts
  • Assist in requirements verification of designs

Benefits

  • general: Employees work 9 out of every 14 days – totaling 80 hours worked – and have every other Friday off
  • general: Inclusive, engaging environment designed to empower employees and promote work-life success

Target Your Resume for "Principal, Mechanical Design Engineer" , L3Harris Technologies

Get personalized recommendations to optimize your resume specifically for Principal, Mechanical Design Engineer. Takes only 15 seconds!

AI-powered keyword optimization
Skills matching & gap analysis
Experience alignment suggestions

Check Your ATS Score for "Principal, Mechanical Design Engineer" , L3Harris Technologies

Find out how well your resume matches this job's requirements. Get comprehensive analysis including ATS compatibility, keyword matching, skill gaps, and personalized recommendations.

ATS compatibility check
Keyword optimization analysis
Skill matching & gap identification
Format & readability score
Quiz Challenge

Answer 10 quick questions to check your fit for Principal, Mechanical Design Engineer @ L3Harris Technologies.

10 Questions
~2 Minutes
Instant Score

Related Books and Jobs

No related jobs found at the moment.