Senior Systems Engineer (TS/SCI) — SCIF, Customer-Facing

L3Harris; Melbourne (FL); On-site; USD 93,000 - 172,000; Full time

Benefits offered by this job

Health insurance

401(k) match

Paid time off

Education assistance

Parental leave

Disability insurance

Flexible spending

Job summary

L3Harris Technologies is a defense technology leader seeking a Systems Engineer, Sr. Specialist to support a customer-facing program in a SCIF environment requiring TS/SCI clearance.

You will manage requirements, produce systems engineering documentation, and collaborate with software engineers in an Agile setting across sites including Rochester, NY; Melbourne, FL; Greenville, TX. This role emphasizes on-site work, active stakeholder communication, and continuous test support, aligned with the

Qualifications

• Active TS/SCI clearance.
• Bachelor’s degree and minimum 6 years of relevant experience; graduate degree with 4 years; or 10+ years in lieu of a degree.
• Experience with requirements management and systems engineering documentation.
• Experience in Agile environments and collaborating with software engineers.

Responsibilities

• Support a full-time on-site schedule within a SCIF environment.
• Serve in a direct customer-facing role and coordinate with stakeholders.
• Engage with customers to gather, define, and document use cases and requirements.
• Generate and manage system-level requirements specifications using requirements management tools.
• Foster cross-functional teamwork and resolve technical challenges.
• Support enterprise test events, including preparation, execution, and follow-up actions.
• Contribute to systems engineering documentation and program artifacts.

Skills

Active TS/SCI Clearance

Customer-facing

Agile

Requirements management

Systems engineering

Education

Bachelor’s Degree +6 years

Graduate Degree +4 years

10+ years experience without degree

Tools

JIRA

Confluence

MBSE

Job description

L3Harris Technologies is a defense technology leader seeking a Systems Engineer, Sr. Specialist to support a customer-facing program in a SCIF environment requiring TS/SCI clearance.

You will manage requirements, produce systems engineering documentation, and collaborate with software engineers in an Agile setting across sites including Rochester, NY; Melbourne, FL; Greenville, TX. This role emphasizes on-site work, active stakeholder communication, and continuous test support, aligned with the