Top 1558 Ts/sci polygraph engineer Jobs in Chantilly, Va

Senior Data Scientist
Leidos —Chantilly, VA
- $154,050 - $278,475 a year
- Full-time
- Computer Science
- 11+ years
- Bachelor's degree
Senior Software Developer
Amentum —Chantilly, VA
- $190,000 - $220,000 a year
- Full-time
- Computer science
- 7 years
- Computer Science
- Paid parental leave
- Health savings account
Quick Apply
AI / ML Engineer
Accenture Federal Services —Chantilly, VA
- $120,500 - $221,800 a year
- Mid-level
- SQL
- Bachelor's degree
9d
Cyber Security Analyst
Peraton —Chantilly, VA
- $135,000 - $216,000 a year
- Bachelor of Science
- Windows
- Analysis skills
- Health savings account
- Paid holidays
Web Developer Senior
CACI —Chantilly, VA
- $103,800 - $218,100 a year
- Full-time
- 7 years
- Computer Science
- Research
- Health insurance
Tier 1 Operations Support Specialist
Booz Allen —Chantilly, VA
- $62,000 - $141,000 a year
- Weekends as needed
- Office
- Windows
- High school diploma or GED
- Health insurance
- Flexible spending account
Senior Knowledge Manager
Novel Applications of Vital Information, Inc. —McLean, VA
- $120,000 - $162,000 a year
- Full-time
- Background check
- 18 years or older
- Bachelor of Science
- Travel reimbursement
- Paid holidays
Quick Apply
17h
Applied Geospatial ML Engineer
Vantor —Herndon, VA
- $185,000 - $228,000 a year
- Full-time
- Computer science
- Azure
- Computer Science
- 401(k) matching
- Pet insurance
Senior Backend Developer, Data Platform
Vantor —Reston, VA
- $137,000 - $200,200 a year
- Full-time
- Hybrid work
- Computer science
- Computer Science
- System design
- Work from home
- 401(k) matching
14d
DevOps Software Engineer - TS/SCI Cleared
Leidos —Bethesda, MD
- $107,900 - $195,050 a year
- Full-time
- Computer science
- Engineering
- 8 years
- Flexible schedule
Senior Developer
Leidos —Chantilly, VA
- $107,900 - $195,050 a year
- Full-time
- Bachelor of Science
- 8 years
- Bachelor's degree
Sr. Software Engineer TS/SCI Polygraph
Leidos —Alexandria, VA
- $131,300 - $237,350 a year
- Full-time
- Bachelor of Science
- Writing skills
- Windows
AI/ML Engineer
Vantor —McLean, VA
- $137,000 - $200,200 a year
- Full-time
- 6 years
- Doctoral degree
- Computer Science
- 401(k) matching
- Pet insurance
9h
Senior Software Engineer
Leidos —Gaithersburg, MD
- $107,900 - $195,050 a year
- Full-time
- Azure
- 6 years
- Computer Science
16h
Electrical Project Manager (PM)
Leidos —McLean, VA
- $116,350 - $210,325 a year
- Full-time
- Master's degree
- Fair chance
- Senior level
- Paid holidays
- Paid time off
Senior Python Developer
Leidos —Chantilly, VA
- $131,300 - $237,350 a year
- Full-time
- Azure
- Computer Science
- Bachelor of Science
ServiceNow Developer - TS SCI w/ polygraph Required
Deloitte —Arlington, VA
- Full-time
- Mid-level
- Office
- Master's degree
10d
Sr. Network Engineer (Unified Communications) - Legacy Migration (Cisco) | Active TS, CCIE preferred
KORE1 Technologies —Washington, DC
- $230,000 - $342,000 a year
- Urgently hiring
- Bachelor's degree
- Continuous improvement
- Agile
- Travel reimbursement
- Paid training
Quick Apply
Engineering Resources Supervisor
Amentum —McLean, VA
- $130,000 - $150,000 a year
- Full-time
- 5 years
- Word processing
- Pass drug screening
- Health savings account
- AD&D insurance
Quick Apply
13d
Sr. Network Engineer - Security Modernization (NGFW, Zero Trust, Cisco ISE) | Active TS | CCIE pref
KORE1 Technologies —Washington, DC
- $230,000 - $320,000 a year
- Urgently hiring
- Bachelor's degree
- Agile
- In-person
- Travel reimbursement
- Paid training
Quick Apply

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ts/sci polygraph engineer jobs near chantilly, va

Senior Data Scientist

Leidos -
Chantilly, VA

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Job Details

Full-time
$154,050 - $278,475 a year

Qualifications

Data Integration (Data management)
Big data systems
Machine intelligence
Data-driven problem-solving
TS/SCI with Polygraph
Machine learning (ML) fundamentals
Project stakeholder communication

Full Job Description

Description

Leidos is seeking a Senior Data Scientist to provide technical leadership and advanced analytics expertise in support of mission-critical national security programs. This role supports customers operating in classified environments and requires close collaboration with subject matter experts, designers, engineers, analysts, and mission stakeholders to deliver innovative, operationally relevant data science and AI solutions.

The Senior Data Scientist will lead complex analytics efforts across the full solution lifecycle—from problem definition and requirements development through design, implementation, deployment, and ongoing operations and maintenance (O&M). The ideal candidate brings deep technical expertise, strong mission awareness, and the ability to communicate analytic insights to senior decision-makers.

Primary Responsibilities

Serve as a senior technical contributor and analytic lead on complex, high-impact national security programs
Partner with government customers and subject matter experts to define mission problems and analytic objectives
Translate ambiguous operational challenges into actionable data science requirements and solution designs
Design, develop, and deploy advanced analytics, statistical models, and machine learning solutions
Apply advanced data science techniques including exploratory data analysis, feature engineering, predictive modeling, hypothesis testing, and algorithm development
Integrate structured and unstructured data from diverse sources across classified environments
Communicate analytic findings, insights, and recommendations to senior technical and non-technical stakeholders
Support deployment, monitoring, and ongoing operations and maintenance (O&M) of analytic solutions
Mentor and guide junior data scientists and contribute to analytic standards, best practices, and reusable frameworks
Maintain awareness of emerging data science, AI, and big-data technologies relevant to national security missions

Basic Qualifications

Master’s degree in Data Science, Computer Science, Statistics, Mathematics, Engineering, or a related quantitative field with 15+ years of relevant experience, or Bachelor’s degree with 18+ years of relevant experience
Extensive experience applying data science and advanced analytics to complex, mission-focused problems
Expert-level proficiency in Python and/or R, including advanced data science and machine learning libraries
Strong experience working with large, complex datasets from multiple sources
Demonstrated ability to lead technical efforts and influence analytic direction on large or complex programs
Strong written and verbal communication skills, including briefing senior leaders
Must hold an active TS/SCI clearance with Polygraph

Preferred Qualifications

Experience supporting intelligence community, Department of Defense, or other national security customers
Experience operating in classified computing environments
Expertise in one or more advanced domains such as machine learning, natural language processing, computer vision, graph analytics, or predictive modeling
Experience with cloud-based or enterprise analytics platforms
Demonstrated experience mentoring technical staff or serving as a technical lead
Demonstrated experience providing instruction, instructional design, or curriculum development

Clearance Requirement

Active TS/SCI with Polygraph

If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.

Original Posting:

January 14, 2026

For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

Pay Range:

Pay Range $154,050.00 - $278,475.00

The Leidos pay range for this job level 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.

About Leidos

Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit www.Leidos.com.

Pay and Benefits

Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at www.leidos.com/careers/pay-benefits.

Securing Your Data

Beware of fake employment opportunities using Leidos’ name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the Leidos.com automated system – never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at [email protected].

If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission.

Commitment to Non-Discrimination

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.

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Refine Your Search

ts/sci polygraph engineer jobs in chantilly, va

Senior Data Scientist

Senior Software Developer

AI / ML Engineer

Cyber Security Analyst

Web Developer Senior

Tier 1 Operations Support Specialist

Senior Knowledge Manager

Applied Geospatial ML Engineer

Senior Backend Developer, Data Platform

DevOps Software Engineer - TS/SCI Cleared

Senior Developer

Sr. Software Engineer TS/SCI Polygraph

AI/ML Engineer

Senior Software Engineer

Electrical Project Manager (PM)

Senior Python Developer

ServiceNow Developer - TS SCI w/ polygraph Required

Sr. Network Engineer (Unified Communications) - Legacy Migration (Cisco) | Active TS, CCIE preferred

Engineering Resources Supervisor

Sr. Network Engineer - Security Modernization (NGFW, Zero Trust, Cisco ISE) | Active TS | CCIE pref

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