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Keywords: Senior Systems Engineer (TS/SCI), Location: Springfield, VA

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Systems Engineer

Responsibilities We’re looking for a Junior Systems Engineer to support the development and sustainment of geospatial.... Security Active TS/SCI clearance, or ability to obtain SCI and successfully complete a polygraph. Desired Qualifications...

Posted Date: 31 Jan 2026
Salary: $80000 - 128000 per year

Expert Level Systems Engineer

Responsibilities We are seeking an Expert-Level Systems Engineer to help lead and shape enterprise-scale engineering...), and U.S. Federal Agencies. In this role, you will operate at the highest technical levels—integrating complex systems, advising senior...

Posted Date: 24 Jan 2026

Systems Engineer - Sensor Integration

Responsibilities Peraton is seeking a highly motivated and experienced Senior Systems Engineer specializing in Sensor... communicate with government, engineers, developers, and stakeholders TS/SCI clearance adjudication or ability to obtain SCI...

Company: Peraton
Location: Springfield, VA
Posted Date: 18 Jan 2026

Systems Engineer - Expert Level

Join Mission Intelligence Group as a Full-Time Systems Engineer at our Springfield, VA location, and immerse yourself... Engineer - Expert Level Mission Intelligence Group is seeking an Expert Systems Engineer to take a leadership role...

Company: Mission Intel
Location: Springfield, VA
Posted Date: 17 Jan 2026

Systems Engineer - Expert

or Chantilly, VA (on-site) Clearance Required: Must be a U.S. Citizen and possess a current and active TS/SCI clearance granted... that are both Government and industry leaders and technology innovators. ACS is seeking an Expert Systems Engineer to help lead the charge...

Posted Date: 16 Jan 2026
Salary: $170000 - 198000 per year

Systems Engineer

Responsibilities We are seeking an Expert Systems Engineer to assist in leading engineering teams in taking a multi..., and governmental boundaries Oversees and coordinates the work of Senior and Mid-level Systems Engineers Works closely with both the...

Company: Peraton
Location: Springfield, VA
Posted Date: 20 Dec 2025

Expert Level Systems Engineer

, and governmental/national boundaries Oversees and coordinates the work of Senior and Mid-level contractor Systems Engineers Works... of experience in project management or technical team leadership TS/SCI clearance adjudication or ability to obtain SCI and pass...

Company: Peraton
Location: Springfield, VA
Posted Date: 20 Feb 2026

COMSEC Systems Engineer (Onsite)

. Experience in written and verbal communication with senior leadership and customers. An active and transferable TS/SCI CI Poly... is required, as only U.S. citizens are eligible for a security clearance​ Security Clearance Type: TS/SCI with Polygraph Security Clearance Status...

Posted Date: 06 Feb 2026
Salary: $86800 - 165200 per year

Network Engineer Senior

for a Senior Network Engineer supporting the Dept. of State (DoS) Diplomatic Technology (DT) Network Operations (NO) division..., and related technologies. Required Clearance: US Citizenship. Active top secret clearance with the ability to obtain TS/SCI...

Company: SAIC
Location: Springfield, VA
Posted Date: 10 Mar 2026

Senior Level Integration Engineer

Responsibilities We are seeking an Integration Engineer with hands-on experience across the Systems Engineering... degree program, or 12+ years equivalent Senior level experience as an Integration Engineer. Minimum 12 years of experience...

Posted Date: 05 Mar 2026
Salary: $112000 - 179000 per year

AI/ML Modeling, Simulation and Analysis Engineer - Senior

Clearance Required: Must be a U.S. Citizen and possess a current and active TS/SCI clearance granted by the Department... and Analysis Engineer to join our team. Senior Level Modeling, Simulation and Analysis (MS&A) Engineers guide and conduct modeling...

Posted Date: 04 Mar 2026
Salary: $165000 - 190000 per year

Senior AI/ML Modeling, Simulation & Analysis Engineer (Part-Time)

Senior AI/ML Modeling, Simulation & Analysis Engineer (Part-Time) Active TS/SCI Required Location: Chantilly..., Va or Springfield, Va We are seeking a Senior AI/ML Modeling, Simulation & Analysis (MS&A) Engineer to support NGA mission initiatives...

Posted Date: 04 Mar 2026

Senior Linux Engineer

Active Secret security clearance (Must be willing to sit for a TS/SCI with Counterintelligence (CI) Poly) Active DoD 8140...Job Description: ECS is seeking a Sr. Linux Engineer to work in our Fairfax, VA office. ECS Federal is seeking a Sr...

Company: ECS
Location: Springfield, VA
Posted Date: 14 Feb 2026

Senior Software Engineer Staff - Clearance Required

must possess active security clearance with a polygraph. Desired Skills: C++ Python Kubernetes Clearance Level: TS/SCI... a $3,000 payment! code-extrefer WHAT WE'RE DOING Lockheed Martin, Rotary Mission Systems Cyber & Intelligence invites you to step...

Company: Lockheed Martin
Location: Springfield, VA
Posted Date: 06 Mar 2026

Senior Software Engineer Staff - Clearance Required

must possess active security clearance with a polygraph. Desired Skills: C++ Python Kubernetes Clearance Level: TS/SCI... a $3,000 payment! code-extrefer WHAT WE'RE DOING Lockheed Martin, Rotary Mission Systems Cyber & Intelligence invites you to step...

Company: Lockheed Martin
Location: Springfield, VA
Posted Date: 06 Mar 2026

Senior Software Engineer Staff - Clearance Required

must possess active security clearance with a polygraph. Desired Skills: C++ Python Kubernetes Clearance Level: TS/SCI... a $3,000 payment! code-extrefer WHAT WE'RE DOING Lockheed Martin, Rotary Mission Systems Cyber & Intelligence invites you to step...

Company: Lockheed Martin
Location: Springfield, VA
Posted Date: 06 Mar 2026

Senior Software Engineer Staff - Clearance Required

must possess active security clearance with a polygraph. Desired Skills: C++ Python Kubernetes Clearance Level: TS/SCI... a $3,000 payment! code-extrefer WHAT WE'RE DOING Lockheed Martin, Rotary Mission Systems Cyber & Intelligence invites you to step...

Company: Lockheed Martin
Location: Annandale, VA
Posted Date: 06 Mar 2026

Senior Software Engineer Staff - Clearance Required

must possess active security clearance with a polygraph. Desired Skills: C++ Python Kubernetes Clearance Level: TS/SCI... a $3,000 payment! code-extrefer WHAT WE'RE DOING Lockheed Martin, Rotary Mission Systems Cyber & Intelligence invites you to step...

Company: Lockheed Martin
Location: Springfield, VA
Posted Date: 06 Mar 2026

Senior Firewall Engineer

security status, policies, and procedures. Required Skills: Must Have: TS/SCI (current) Must be able to successfully..., etc.) Intrusion Detection Systems / IDS Products (e.g. FireEye, F5 Load Balancer, Cisco FTD, etc.) Unix, RHELS OS, Windows Enterprise...

Company: Crimson Phoenix
Location: Springfield, VA
Posted Date: 19 Feb 2026

Specialist Systems Engineering

: Specialist, Systems Engineer - Watch Officer (Active TS/SCI w/CI Poly Required) Job Code: 34389 Job Location: Springfield... of a degree, minimum of 8 years of prior related experience. Active Top Secret/SCI with CI Poly clearance...

Posted Date: 25 Feb 2026