Scientist, Systems Engineer
L3HARRIS Technologies
Chantilly, VA · Posted November 11, 2026
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November 2026
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About the job
Job Title: Scientist, Systems Engineer - TS/SCI Job Code: 47714 Job Location: Carlsbad, CA Job Schedule: 9/80: Employees work 9 out of every 14 days – totaling 80 hours worked, and have every other Friday off
Job Description:
This role provides consultative‑level technical direction and guides multidisciplinary teams in delivering mission‑critical, end‑to‑end system solutions. The individual will work in complex mission environments, collaborating closely with customer, product owners and engineering teams to ensure system architectures meet evolving mission needs. The individual will serve as a senior technical leader responsible for architecting mission concepts, defining system requirements, and developing CONOPS, use cases, and systems‑engineering artifacts across the full system lifecycle.
Essential Functions:
Cognizance of customers’ mission needs and industry base
A strong business acumen and knowledge of L3Harris’ technical competencies
Capability to interpret or generate Concept of Operations (CONOPS) or Operational Descriptions Document (ODD)
System architecture principles
Sufficient background in proposed technology to be capable of assessing high level performance requirements
Aptitude for developing innovative solutions
Focuses on breadth rather than depth; accesses Subject Matter Experts (SMEs) as needed requiring a broad technical network within L3Harris
Strong professional verbal and written communication skills Support operational analysis and develop concept of operations, design and implementation plans
Support requirements development, analysis and management
Mission operations requirements development and analysis
Coordination with Mission Planners and Operational Users
Use software tools, scripting and software/hardware troubleshooting
Supports development and evaluation of complex system designs and architectures
Develop and deliver presentations to communicate design activity plans and status to internal and external customers
Customer mission understanding
Design Reference Mission analysis and validation techniques and tools
Architecture development, MBSE definition, evaluation, and validation
Alignment of solutions within a portfolio of products
Qualifications:
Bachelor’s Degree and a minimum of 12 years of prior relevant experience. Graduate Degree and a minimum of 10 years of prior related experience. In lieu of a degree, minimum of 16 years of prior related experience.
Active TS/SCI clearance.
Preferred Skills:
Master’s degree in Systems Engineering, Optical Engineering, Mechanical Engineering, or a related engineering discipline.
Experience in systems engineering for complex mission system development programs.
Experience leading technical execution across the full product lifecycle, including requirements, architecture, integration, verification, validation, and sustainment.
Experience translating customer needs into system-level solutions while balancing technical, cost, schedule, and risk considerations.
Experience developing, deriving, allocating, and managing system, hardware, and software requirements.
Experience with interface definition, requirements traceability, verification planning, and technical problem resolution.
Experience leading cross-functional teams and supporting technical reviews, customer interactions, and proposal activities.
Experience with DOORS or an equivalent requirements management tool.
Experience developing technical and/or cost proposals.
Experience using earned value management systems to support program planning and performance measurement.
Experience developing, maintaining, and executing against integrated master schedules.
Experience supporting programs with multi-level security, cybersecurity, or information assurance requirements.
Active TS/SCI with Poly clearance.
In compliance with pay transparency requirements, the salary range for this role in California is $153,000.00 - $284,000.00. This is not a guarantee of compensation or salary, as final offer amount may vary based on factors including but not limited to experience and geographic location. L3Harris also offers a variety of benefits, including health and disability insurance, 401(k) match, flexible spending accounts, EAP, education assistance, parental leave, paid time off, and company-paid holidays. The specific programs and options available to an employee may vary depending on date of hire, schedule type, and the applicability of collective bargaining agreements.