Jobs in the United States

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Added 19 hours ago
MG
SIGINT Product Engineer - TS/SCI w CI Poly
Modern Government Solutions
Chantilly, VA
- $160,000 to $200,000 USD / year
Must possess an active DoD TS/SCI with CI Polygraph security clearance.
Added 19 hours ago
MG
Senior Network Engineer - TS/SCI w CI Poly
Modern Government Solutions
McLean, VA
- $160,000 to $200,000 USD / year
Must possess an active DoD TS/SCI with CI Polygraph security clearance.
Added 19 hours ago
MG
Network Administrator - TS/SCI w CI Poly
Modern Government Solutions
McLean, VA
- $120,000 to $180,000 USD / year
Must possess an active DoD TS/SCI with CI Polygraph security clearance.
Added 19 hours ago
Senior Reverse Engineer
Nightwing Intelligence Solutions, LLC
AL-3443: 3443 Aerobee Road Redstone Arsenal, AL · Wright-Patterson AFB, OH
Qualified applicants may be subject to a security investigation and must meet minimum qualifications for access to classified information. U.S. Citizenship required. An active TS/SCI w/CI…
Added 19 hours ago
Principal Reverse Engineer
Nightwing Intelligence Solutions, LLC
AL-3443: 3443 Aerobee Road Redstone Arsenal, AL · Wright-Patterson AFB, OH
Qualified applicants may be subject to a security investigation and must meet minimum qualifications for access to classified information. U.S. Citizenship required. An active TS/SCI w/CI…
Added 1 day ago
Counter-Narcotics Operations Lead
CACI International
Tampa, FL
Ensure full compliance with DoD security guidelines, classification markings, OPSEC regulations, and interagency information-handling caveats.
Added 1 day ago
Full Stack Application Engineer
CACI International
Laurel, MD
Minimum Clearance Required to Start: TS/SCI with Polygraph
Added 1 day ago
Senior Cyber Fires Operations Planner
ManTech International
Annapolis Junction, MD
Experience working across large teams to drive a security agenda and managing complex, intertwined systems and data flows.
Added 2 days ago
Systems Engineer - TS/SCI w/Polygraph
GD Information Technology, Inc.
United States
Security clearance level: TS/SCI with Polygraph
Added 2 days ago
Information System Security Officer (ISSO)
CACI International
Jessup, MD
CACI is seeking an experienced Information Systems Security Officer (ISSO) to support cybersecurity operations, risk management, and compliance activities within a Department of Defense…
Added 2 days ago
Senior Hardware Engineer - Cross Domain Solutions (SME)
CACI International
Fort Meade, MD
Minimum Clearance Required to Start: TS/SCI with Polygraph
Added 2 days ago
Operations/ Document Management Specialist
Parsons Corporation
Annapolis Junction, MD
Clearable to TS/SCI w/polygraph security clearance
Added 2 days ago
Program Security Representative II (PSR II) (TS, w/ SCI Eligibility)
RedTrace Technologies Inc
Lackland AFB, TX
The Program Security Representative’s primary function is to provide multi-discipline security support for one or more of the customer’s Special Access Programs (SAPs). The position will…
Added 2 days ago
GI
Systems Specialist - Active TS/SCI w/Poly
GD Information Technology, Inc.
United States
- $47 to $63.6 USD / hour
Apply patches, updates, and configuration changes to systems in accordance with change management procedures.
Added 2 days ago
GI
Systems Specialist - Active TS/SCI w/Poly
GD Information Technology, Inc.
United States
- $47 to $63.6 USD / hour
Apply patches, updates, and configuration changes to systems in accordance with change management procedures.
Added 2 days ago
GI
Systems Specialist - Active TS/SCI w/Poly
GD Information Technology, Inc.
United States
- $47 to $63.6 USD / hour
Apply patches, updates, and configuration changes to systems in accordance with change management procedures.
Added 3 days ago
Ci2 Chief Engineer
RTX
United States
Active and transferable Top Secret/SCI with Polygraph U.S. government-issued security clearance is required prior to start date, with the ability to obtain special program access after…
Added 3 days ago
Military Acquisitions Action Officer, Senior
Parsons Technical Services, Inc.
MD
An active Top Secret SCI w/Polygraph security clearance is required for this position.
Added 3 days ago
Senior All-Source Intelligence Analyst - TS/SCI w/Poly
Parsons Technical Services, Inc.
MD
An active Top Secret SCI w/Polygraph security clearance is required for this position.
Added 3 days ago
Launch Readiness and Rehearsal Support_TS/SCI w/ poly
GD Information Technology, Inc.
United States
● Security clearance level: TS/SCI with polygraph
Added 3 days ago
OP
System Engineer 3-BP-021
Onyx Point, Inc.
Hanover, MD
- $78,000 to $250,000 USD / year
TO BE CONSIDERED FOR THIS POSITION YOU MUST HAVE AN ACTIVE TS/SCI W/ FULL SCOPE POLYGRAPH SECURITY CLEARANCE (U.S. CITIZENSHIP REQUIRED)
Added 3 days ago
OP
System Engineer 3-BP-040
Onyx Point, Inc.
Hanover, MD
- $78,000 to $250,000 USD / year
TO BE CONSIDERED FOR THIS POSITION YOU MUST HAVE AN ACTIVE TS/SCI W/ FULL SCOPE POLYGRAPH SECURITY CLEARANCE (U.S. CITIZENSHIP REQUIRED)
Added 3 days ago
Program Security Representative III (PSR III) (TS, w/ SCI Eligibility)
RedTrace Technologies Inc
Lorton, VA
SECURITY CLEARANCE REQUIREMENT: TS, WITH SCI ELIGIBILITY
Added 3 days ago
Program Security Representative II (PSR II) (TS, w/ SCI Eligibility)
RedTrace Technologies Inc
Lorton, VA
The Program Security Representative’s primary function is to provide multi-discipline security support for one or more of the customer’s Special Access Programs (SAPs). The position will…
Added 3 days ago
Network Systems Engineer (2026-0250)
Acclaim Technical Services
Reston, VA
We are currently seeking a Network Systems Engineer with a TS/SCI w/ Polygraph to design, develop, and optimize high-performance, scalable on-premise systems and cloud networking solutions.…

Markon

System Engineer 3

Annapolis Junction, MD, United States

$120,000 to $210,000 USD / year

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Job details

Pay: $120,000 to $210,000 USD / year
Apply by: Oct 29, 2027
Posting language: English
Posted: Oct 29, 2026

Original job description

Description

Markon is looking for an Sr. Systems Engineer to support a contract in the Annapolis Junction, MD area performing hands on Systems Engineering tasks. This role will support up to (16) hours a week of telework. The telework hours will depend on the tasking for that week.

Responsibilities

Manage system requirements and derived requirements to ensure the delivery of production systems that are compatible with the defined system architecture(s) – DoD.
Architecture Framework (DoDAF), Service-oriented Architecture (SOA), etc
Contribute to the development of sections of systems engineering documentation such as System Engineering Plans, Initial Capabilities Documents, Requirements specifications, and Interface Control Documents
Assist with the development of system requirements, functional requirements, and allocation of the same to individual hardware, software, facility, and personnel components
Coordinate the resolution of action items from Configuration Control Board (CCB) meetings, design reviews, program reviews, and test reviews that require cross-discipline coordination
Participate in an Integrated Product Team to design new capabilities based upon evaluation of all necessary development and operational considerations
Allocate real-time process budgets and error budgets to systems and subsystem components
Generate alternative system concepts, physical architectures, and design solutions
Define the methods, processes, and evaluation criteria by which the systems, subsystems and work products are verified against their requirements in a written plan
Develop system design solution that satisfies the system requirements and fulfills the functional analysis
Review and provide input to program and contract work breakdown structure (WBS), work packages and the integrated master plan (IMP)
Participate in the development of system engineering documentation, such as System Engineering Plans, Initial Capabilities Documents, Requirements Specifications, and Interface Control Documents
Participate in interface definition, design, and changes to the configuration between affected groups and individuals throughout the life cycle
Derive from the system requirements an understanding of stakeholder needs, functions that may be logically inferred and implied as essential to system effectiveness
Derive lower-level requirements from higher-level allocated requirements that describe in detail the functions that a system component must fulfill, and ensure these requirements are complete, correct, unique, unambiguous, realizable, and verifiable
Participate in establishing and gaining approval of the definition of a system or component under development (requirements, designs, interfaces, test procedures, etc.) that provides a common reference point for hardware and software developers
Develop derived requirements for Information Assurance Services (Confidentiality, Integrity, Non repudiation, and Availability); Basic Information Assurance Mechanisms (e.g., Identification, Authentication, Access Control, Accountability); and Security Mechanism Technology (Passwords, cryptography, discretionary access control, mandatory access control, hashing, key management, etc.)
Implement comprehensive SOA solutions
Implement operational view, technical standards view, and system and services view for architectures using applicable DoDAF standards
Review and/or approve system engineering documentation to ensure that processes and specifications meet system needs and are accurate, comprehensive, and complete

Qualifications

Active TS/SCI w/ Polygraph
Twenty (20) years experience as a Systems Engineer in programs and contracts of similar scope, type and complexity is required.
Bachelor’s degree in System Engineering, Computer Science, Information Systems, Engineering Science, Engineering Management, or related discipline from an accredited college or university is required. (OR) An additional five (5) years of additional SE experience may be substituted for a bachelor’s degree.

Salary Range USD $120,000.00 - USD $210,000.00 /Yr.The Markon pay range for this position is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

Overview

Eager to join a team where your skills are valued, your growth is nurtured, and your impact is profound? Look no further than Markon, a premier consulting firm deeply dedicated to advancing our nation's most critical missions.

At Markon, we don't just offer jobs – we offer opportunities for personal and professional transformation. Empowering our employees to lead, innovate, and excel, we foster an environment where new ideas are not just welcomed but celebrated. As a perennial Washington Post Top Workplace, we prioritize the well-being and success of our team members, ensuring they can bring their best selves to work.

Headquartered in Falls Church, Virginia, Markon has garnered national recognition for our unwavering dedication to excellence in serving the intelligence community, as well as federal civilian and defense agencies. Our growing reach extends across 17 states, 116 countries, and 5 continents, where our team of dynamic professionals collaborates to deliver unparalleled program and project management services.

Markon values people and the tremendous impact each individual can make – which is why we’re consistently recognized as one of the best places to work in federal government consulting. Here, you can help solve the nation’s most important challenges, surrounded by colleagues who help you grow, advance, and succeed. We are deeply dedicated to what matters – bringing out the best in each other to advance our clients’ missions.Join us and make a meaningful impact.

Markon is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, national origin, age, protected veteran status, or disability status. This job posting will remain open until the position is filled.

Benefits Offered: Medical, Dental, Vision, Life Insurance, Short-Term Disability, Long-Term Disability, 401(k) match, Flexible Spending Accounts, EAP, Training and Tuition Assistance, Paid Time Off, and Holidays.