Full-Time

Senior Mechanical Engineer

L3Harris Technologies

L3Harris Technologies

10,001+ employees

Defense technology solutions for national security

No salary listed

No H1B Sponsorship

Palm Bay, FL, USA

In Person

Periodic field testing and demonstration efforts may require travel.

US Top Secret Clearance Required

Bachelor's, Master's

Category
Mechanical Engineering (1)
Required Skills
CAD
Software Testing
PTC Creo
3D Modeling

Get referred to L3Harris Technologies

See people who can refer or advise you

Requirements
  • A Bachelor's Degree and a minimum of 6 years of prior relevant experience, or a Graduate Degree and a minimum of 4 years of prior related experience; in lieu of a degree, a minimum of 10 years of prior related experience.
  • An active Top Secret or Top Secret/SCI clearance, active within the last two years, and a favorable polygraph are required.
  • Hands-on experience in 3D modeling and critical hardware design and development.
  • Ability to work independently with limited supervision in a multidisciplinary team environment.
  • Ability to work in a laboratory setting with direct, hands-on involvement in hardware development and testing.
Responsibilities
  • Lead process design, development, and qualification testing of complex mechanical hardware, including precision mechanisms and electromechanical systems.
  • Take ownership of major system components and support program needs as they evolve.
  • Provide technical leadership across the engineering lifecycle, from requirements definition and concept generation through material selection, trade studies, design optimization, documentation, and assembly and integration testing.
  • Take full ownership of assigned tasks while working with limited supervision in high-consequence program activities.
  • Provide formal and informal communication and briefings to internal and external stakeholders, including customer representatives.
  • Generate Technical Data Package components, including part and assembly drawings.
  • Prototype, integrate, and test component parts and assemblies.
  • Develop test plans and procedures for mechanical subsystems.
  • Perform test and evaluation of component parts and systems.
  • Participate in peer reviews, Preliminary Design Reviews, Critical Design Reviews, and other required design reviews.
  • Participate in product change review meetings and discussions and implement changes.
  • Participate in interdisciplinary design teams and reviews.
  • Adhere to company processes for product development, configuration management, purchasing, and quality.
  • Direct designers, technicians, and operators as part of a design team.
  • Support field testing and demonstration efforts as a mechanical engineering field representative.
Desired Qualifications
  • Experience designing or developing precision mechanisms.
  • Experience designing or developing mechatronic systems.
  • Experience packaging modules and electronics.
  • Experience considering thermal and structural loading.
  • Experience optimizing size, weight, and power.
  • Proficiency with computer-aided design tools such as Creo.
  • Understanding of ASME Y14.5 Geometric Dimensioning and Tolerancing standards.
  • Experience with actuators, custom gear trains, electro-optical systems, or materials testing.
  • Experience with Design for Manufacturability and Assembly (DFM/DFMA).
  • Experience with machined part design.
  • Experience with plastic or sheet metal part design.
  • Experience with additive manufacturing technologies and design best practices.
  • Understanding of Earned Value Management System (EVMS) cost and schedule practices.
L3Harris Technologies

L3Harris Technologies

View

L3Harris Technologies provides defense and national-security technology solutions across space, air, land, sea, and cyber domains. It develops integrated systems with advanced communications, surveillance, and reconnaissance to support government agencies and defense contractors under long-term contracts. The product combines hardware, software, and services to deliver secure, interoperable, mission-critical capabilities. Its goal is to help clients strengthen operational readiness and national security through reliable, multi-domain technologies and sustained partnerships.

Company Size

10,001+

Company Stage

IPO

Headquarters

Melbourne, Florida

Founded

1895

Get referred to L3Harris Technologies

See people who can refer or advise you

Simplify Jobs

Simplify's Take

What believers are saying

  • July 29, 2026 backlog hit $42 billion, with revenue guidance raised to $23.7 billion.
  • July 27, 2026 Pentagon expanded L3Harris propulsion capacity for Patriot and THAAD interceptors.
  • July 13, 2026 contract supports at least 70 missile-tracking satellites, with five already in orbit.

What critics are saying

  • August 17, 2026 CEO Christopher Kubasik was ousted after conduct violations.
  • THAAD and Patriot ramps demand flawless execution; delays jeopardize seven-year Pentagon awards.
  • Program concentration on missile defense ties growth to one customer family and procurement cycle.

What makes L3Harris Technologies unique

  • July 13, 2026 SDA awarded L3Harris 18 Golden Dome missile-defense satellites.
  • L3Harris controls Patriot, THAAD, and NGI propulsion across multiple manufacturing sites.
  • January 5, 2026 reorganization sharpened three segments around missile, space, and communications.

Help us improve and share your feedback! Did you find this helpful?

Benefits

Health Insurance

Disability Insurance

401(k) Retirement Plan

401(k) Company Match

Paid Vacation

Paid Holidays

Mental Health Support

Relocation Assistance

Growth & Insights and Company News

Headcount

6 month growth

14%

1 year growth

14%

2 year growth

14%
Yahoo Finance
Aug 22nd, 2026
L3Harris taps Intuitive Machines to build 18 spacecraft for $1.8B missile defence mission

L3Harris Technologies selected Intuitive Machines on 4 August to build 18 advanced spacecraft platforms for the Space Development Agency's Accelerated Missile Defense Tranche 3 mission. Intuitive Machines will manufacture and deliver the satellite platforms to host L3Harris' payload technology for national security space operations. L3Harris reported Q2 2026 revenue of $5.9 billion, an 8% year-over-year increase, with net income of $600 million. The company raised its full-year 2026 revenue guidance to $23.2 billion–$23.7 billion, backed by a $42.0 billion backlog. Intuitive Machines reported Q2 2026 revenue of $206 million, more than four times its prior-year level. However, the company posted an operating loss of $47 million and burned $84 million in cash during the quarter, leaving $367 million in cash. Its backlog expanded to a record $1.8 billion.

Yahoo Finance
Aug 18th, 2026
L3 Harris CEO ousted amid misconduct allegations, echoing 2012 Lockheed Martin exit

Christopher Kubasik has been ousted as CEO of L3 Harris following allegations of misconduct. According to Semafor, citing sources familiar with the matter, an investigation found he was engaged in an inappropriate relationship with a subordinate. This marks the second time Kubasik has been forced out of a leadership position under similar circumstances. In 2012, he was set to become CEO of Lockheed Martin but resigned after an ethics investigation confirmed he had a close personal relationship with a subordinate employee. L3 Harris, headquartered in Melbourne, Florida, announced Kubasik's departure on 17 August. The company said the misconduct was unrelated to financial reporting, controls, customer relationships or operational performance. Kubasik will retain some vested stock options but won't receive severance payments.

Yahoo Finance
Aug 17th, 2026
L3Harris CEO steps down after conduct review, shares fall 2.7%

L3Harris Technologies announced the immediate departure of CEO Christopher Kubasik following a conduct review, causing shares to fall roughly 2.7% in premarket trading Monday. The board appointed Sam Mehta as president and CEO, whilst Lewis Hay III became independent chairman. The company stated Kubasik's conduct was inconsistent with its Code of Conduct, though unrelated to financial reporting, controls, customer relationships, or operational performance. Following an investigation with independent counsel, the board entered into a separation agreement with Kubasik. Mehta joined L3Harris in 2023 and brings over 25 years of aerospace and defence leadership experience. He previously led segments comprising more than 80% of the company's total revenue. Despite the leadership change, L3Harris reaffirmed its 2026 consolidated revenue and financial guidance.

Associated Press
Aug 10th, 2026
L3Harris completes hot-fire test of stage two rocket motor for Next Generation Interceptor program

L3Harris Technologies has successfully completed a hot-fire test of its stage two advanced large solid rocket motor for the Missile Defense Agency's Next Generation Interceptor programme. The company conducted the test as part of the Lockheed Martin team developing the homeland missile defense system. The test validated the system's design integrity, with the motor completing a full-duration burn in a simulated high-altitude, vacuum environment. Engineers evaluated performance in conditions mimicking Earth's upper atmosphere. L3Harris serves as the primary propulsion and control systems provider for NGI, producing both stage one and stage two rocket motors, plus the Attitude Control System and Divert and Attitude Control System. The company manufactures components across facilities in California, Virginia, Alabama, and Arkansas.

Yahoo Finance
Aug 10th, 2026
Iran tensions expose defense supply gaps as AeroVironment lands $186M drone deal

Iran's recent attacks in the Strait of Hormuz and Red Sea have exposed critical shortages in defense supplies, particularly drones, precision weapons, and artillery shells. This situation presents opportunities for defense contractors positioned to scale production. AeroVironment secured a $186 million US Army order in February 2026 for Switchblade loitering munitions, part of a five-year contract with a $990 million ceiling. The systems enable small units to destroy armored vehicles without larger missiles. L3Harris Technologies reported orders of $7.8 billion in Q1 2026, with a book-to-bill ratio of 1.4 and record backlog of $40.7 billion. By Q2, backlog reached $42 billion on $7.3 billion in new orders, with revenue increasing 8% to $5.9 billion. Both companies are positioned to benefit from increased demand driven by ongoing conflicts.