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Sr. Specialist, Systems Engineer

L3Harris TechnologiesHuntsville, ALPosted Oct 21, 2026 · open 5 days

Last confirmed open Oct 26, 2026

Full-timeSeniorSecret

Before you apply

U.S. citizenship required
Only U.S. citizens can be hired for this role.
Secret clearance
An active clearance is required to start.
Bachelor's degree or equivalent experience
Experience or training can stand in for the degree.
9/80 schedule
Nine-hour days, with every other Friday off.
Travel up to 10%
The share of time spent travelling, as the posting states it.

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 Systems Engineer
Job Code: 46581

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

Job Description:

The Missile Solutions segment of L3Harris is a leader in the design, manufacture, and deployment of advanced propulsion and energetics systems, including those for rocket motors. Our customers include the U.S. Department of War, Missile Defense Agency, NASA, and other notable agencies and companies domestically and internationally. We are currently seeking a Senior Associate Systems Engineer to join our team, focused on specifying requirements for propulsion systems.

Candidates interested in applying for this position should have a background in systems engineering and an understanding of Model Based Systems Engineering (MBSE). This role demands meticulous attention to detail and the ability to manage projects under moderate supervision.

Essential Functions:

  • Requirement Development (60%): Develops systems, subsystem, and component requirements for rocket propulsion systems’ product development. Responsible for derivation, allocation, and documentation of requirements in requirements databases and specifications. Coordinates requirements and related specification change management with IPT members. Defines and coordinates requirements verification plans with integrated product team members, plans and manages compliance assessment and certification. These activities will be performed utilizing model-based systems engineering tools.
  • Functional Analysis (15%): Performs functional analysis and coordinates system trade studies. Coordinates selection of optimized concept baselines through benefit/cost trades in support of definition of system architecture and objectives.
  • Risk Coordination (15%): Coordinates project risk and opportunity assessment and management and prepares and reports results on mitigation plans. May direct, coordinate and review the work of a small staff of engineers and/or technicians; estimates personnel needs and schedules and assigns work to meet completion date.
  • Communication (10%): Communicates results in oral presentations and written communication. Represents the organization in meetings/teleconferences to resolve important questions and to plan and coordinate work.
  • Travel: 10%.

Qualifications:

  • Degree and a minimum of 6 years of prior systems engineering experience. Graduate Degree or equivalent with 4 years of prior systems engineering experience. In lieu of a degree, minimum of 10 years of prior systems engineering experience.
  • Active US secret security clearance.

Preferred Additional Skills:

  • Master's Degree in Mechanical or Aerospace Engineering is desired.
  • Advanced degree in a relevant field is preferred.
  • 4 years of relevant industry experience in systems engineering, preferably in the aerospace or defense sectors. Specifically, Systems Engineering (requirements management, risk management, product development cycle) disciplines and liquid rocket propulsion strongly desired.
  • Experience with tools such as IBM DOORs, Cameo and Model-Based Systems Engineering methodologies.

#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.

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Job Details
Location
Huntsville, AL
Type
Full-time
Level
Senior
Experience
6+ years
Posted
Oct 21, 2026
Required Skills
Systems EngineeringModel-Based Systems EngineeringRequirements ManagementRequirements DevelopmentFunctional AnalysisRisk ManagementRequirements VerificationSystems ArchitectureTrade StudiesRocket Propulsion
Preferred Skills
IBM DOORsCameoLiquid Rocket PropulsionProduct Development CycleAerospace EngineeringMechanical Engineering

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