Senior Defense Systems Engineer — TS/SCI

Jobtome; Rockwall (TX); On-site; USD 110,000 - 160,000; Full time

Job summary

L3Harris seeks a Senior Specialist, Systems Engineer to design, develop, integrate, and deliver advanced software for mission-critical defense systems. You will lead end-to-end software efforts, coordinate with customers, and ensure secure, scalable solutions across multiple platforms.

Ideal candidates have ELINT experience, strong documentation skills, and a track record of delivering complex projects on schedule. Expect interaction with cross-functional teams in a demanding defense environment.

Qualifications

• Must have CompTia Security+ certification.
• Experience leading end-to-end software development across lifecycle.
• Primary technical interface with customers and schedules.
• Design scalable authentication and authorization solutions.
• Lead small teams for diagnostics and monitoring tools.
• Investigate requests and implement software solutions.
• Maintain interface definitions and technical artifacts.
• Support modernization including containerization and reducing debt.
• Create user manuals and documentation.
• Work in a fast-paced environment with time-critical requirements.

Responsibilities

• Lead end-to-end software development efforts including architecture, design, implementation, testing, documentation, and delivery.
• Serve as primary technical interface with customers, coordinating schedules and progress.
• Design scalable authentication and authorization solutions for access control.
• Lead small teams developing diagnostics and monitoring tools for health visibility.
• Investigate customer requests, analyze requirements, and implement solutions.
• Maintain interface definition documentation and technical artifacts.
• Support modernization, including containerization and debt reduction.
• Create user manuals and technical documentation for delivered capabilities.
• Work in a fast-paced, dynamic environment with time-critical requirements.
• Collaborate effectively in a team and communicate clearly.

Skills

Linux

Jira

Confluence

DOORS

ELINT knowledge

Unit testing

Education

Bachelor’s Degree in Electrical/Computer Engineering/CS/Software Engineering

Graduate Degree

10+ years experience in lieu of degree

Tools

CompTIA Security+

Job description

L3Harris seeks a Senior Specialist, Systems Engineer to design, develop, integrate, and deliver advanced software for mission-critical defense systems. You will lead end-to-end software efforts, coordinate with customers, and ensure secure, scalable solutions across multiple platforms.

Ideal candidates have ELINT experience, strong documentation skills, and a track record of delivering complex projects on schedule. Expect interaction with cross-functional teams in a demanding defense environment.