Top 418 Senior data scientist Jobs in Largo Md

Senior AI Engineer (SWE-3)
Leidos —Linthicum Heights, MD
- $107,900 - $195,050 a year
- Full-time
- 8 years
- Bachelor's degree
- Fair chance
- Paid holidays
- Paid time off
6h
Senior Data Scientist - AI Trainer
DataAnnotation —Washington, DC
- $50 - $100 an hour
- Part-time
- Remote
- Computer Science
- English
- 3 years
- Flexible schedule
Quick Apply
10d
Senior Quantitative Analyst - AI Trainer
DataAnnotation —Washington, DC
- $50 - $100 an hour
- Part-time
- Remote
- Computer Science
- English
- Mid-level
- Flexible schedule
Quick Apply
10d
Senior Survey Research Statistician
Gallup —Washington, DC
- $175,000 - $190,000 a year
- Hybrid work
- Office
- Doctor of Philosophy
- Mentoring
- Health insurance
- Dental insurance
Senior Data Scientist (TS/SCI cleared)
Johns Hopkins Applied Physics Laboratory (APL) —Laurel, MD
- $105,000 - $290,000 a year
- Full-time
- Computer Science
- Master's degree
- Analysis skills
- Disability insurance
- Health insurance
Sr Data Scientist, NPV Modeling
PenFed Credit Union —McLean, VA
- $84,700 - $172,907 a year
- Overtime
- Office
- Master's degree
- SQL
- Paid parental leave
- Disability insurance
Senior Data Scientist
Accenture Federal Services —Washington, DC
- $116,900 - $243,100 a year
- Remote
- 8 years
- US work authorization
- Military encouraged
Senior Data Scientist
Johns Hopkins Applied Physics Laboratory (APL) —Laurel, MD
- $105,000 - $290,000 a year
- Full-time
- Computer Science
- Master's degree
- Analysis skills
- Disability insurance
- Health insurance
Senior Data Scientist (Pentagon, Onsite)
Innovative Technologies Corporation —Pentagon, DC
- $150,000 - $175,000 a year
- Full-time
- Computer Science
- English
- Office
- Health savings account
- Health insurance
Quick Apply
1d
Senior Data Scientist
Tetra Tech —Washington, DC
- $155,000 - $170,000 a year
- Weekends as needed
- Computer Science
- System design
- 11+ years
Senior Data Scientist
Castellum Inc —Fort Belvoir, VA
- $140,000 - $170,000 a year
- Full-time
- Computer Science
- Master's degree
- SQL
Quick Apply
Senior Data Scientist
Satsyil Corporation —Alexandria, VA
- Contract
- Java
- Math
- Software development
Quick Apply
Senior Data Scientist (Business Operations)
QinetiQ US —Fort Meade, MD
- $135,000 - $185,000 a year
- Email
- Remote
- Azure
- Computer Science
- 8 years
Senior Data Scientist
Prescient Edge Federal —Washington, DC
- $160,000 - $200,000 a year
- Full-time
- 5 years
- Office
- Master's degree
- Health insurance
- Dental insurance
Senior Data Scientist
Chenega Systems —Arlington, VA
- $159,240 - $220,000 a year
- Full-time
- Pass drug screening
- AWS
- JavaScript
14d
Senior Data Scientist
Steampunk —McLean, VA
- $120,000 - $180,000 a year
- 3 years
- Master's degree
- SQL
Data Scientist Senior
Peraton —Fort Meade, MD
- $135,000 - $216,000 a year
- Bachelor of Science
- 11+ years
- Office
- Health savings account
- Paid holidays
1d
Senior Data Scientist (RMF)
Bytoa —Columbia, MD
- $230,000 - $255,000 a year
- Computer Science
- Bachelor of Science
- Bachelor's degree
- Referral program
Senior Data Scientist - Clinical Informatics (Analytics Enablement)
CVS Health —Washington, DC
- $83,430 - $222,480 a year
- Full-time
- Remote
- Medicine
- Computer Science
- HIPAA
- Health insurance
- Dental insurance
12d
Senior Data Analyst
CACI —Washington, DC
- $86,600 - $181,800 a year
- Full-time
- Research
- Java
- Analysis skills
- Health insurance

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Senior AI Engineer (SWE-3)

Leidos -
Linthicum Heights, MD

Apply Now

Job Details

Full-time
$107,900 - $195,050 a year
6 hours ago

Benefits

Paid holidays
Paid time off
Parental leave
401(k) 6% Match
401(k) matching
Flexible schedule

Qualifications

Jira
Git
AI platforms (beyond public GPTs)
Confluence
Agile software development
TS/SCI with Polygraph
Defect tracking tools
Python

Full Job Description

Description

Leidos has a new and exciting opportunity for a Senior AI Engineer in our Intel Sector. Our talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management. At Leidos, we offer competitive benefits, including Paid Time Off, 11 paid Holidays, 401K with a 6% company match and immediate vesting, Flexible Schedules, Discounted Stock Purchase Plans, Technical Upskilling, Education and Training Support, Parental Paid Leave, and much more. Join us and make a difference in National Security!

Job Summary:

Our program provides our customer's Operations organization with the best possible solutions for their mission needs. We achieve this through rapid prototyping, new development, and advanced technology research. From leading-edge visualizations to analytic development, we're always pushing the boundaries to find new and better data sources and tradecraft to answer intelligence questions. With a focus on collaboration and a fast-paced environment, our prototype development program is the ideal place to grow your skills and make a real impact. Click here to learn more about how this program “Delivers Mission Success!”

Seeking a motivated Senior AI Engineer with a proven track record in software engineering and deep understanding of Artificial Intelligence/Machine Learning (AI/ML) techniques to support the exciting new AI and Emerging Technologies (AI&ET) mission. The engineer will work closely with mission stakeholders to capture requirements, aid in structured planning, and improve the certification process by introducing AI/ML tooling. Additionally, the engineer will use AI/ML to develop tools and techniques to include fine tuning Large Language Models (LLM) that assist in enhanced vulnerability identification and mitigation capabilities.

Job Responsibilities/Qualifications:

Mission Focus: Collaborate closely with technical leadership to design, develop, and maintain LLM orchestration frameworks that coordinate static analyzers, retrieval-augmented generation (RAG) systems, and automated testing pipelines. Develop and optimize data preprocessing pipelines to ingest, clean, transform, and vectorize product documentation, source code, and test results for LLM consumption. Design and implement database solutions to support RAG architectures, artifact storage, audit trails, and metadata management.
Technical Proficiency: Collaboratively work with systems engineers to architect and deploy networked AI tools within secure enclaves and conduct performance profiling, optimization, and scalability analysis of mission systems. Support security assessments and authority to operate (ATO) processes.
Qualifications: Bachelor's degree plus eight (8) years of relevant experience or equivalent. Proficiency in Python, LLM integration, and data engineering. Experience with static analyzers, RAG framework, and relational and vector databases. Familiarization with Agile, Git, Jira, and Confluence.
Security Clearance: Active TS/SCI with Polygraph required to be considered for this role.
Desirable Skills: Familiarization with RUST, Claude Code, Codex, and CI/CD.

At Leidos, the opportunities are boundless. We challenge our staff with interesting assignments that allow them to thrive professionally and personally. For us, helping you grow your career is good business. We look forward to learning more about you – apply today!

Careers.leidos.com

CONMD

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:

July 23, 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 $107,900.00 - $195,050.00

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.

Apply Now

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senior data scientist jobs in largo md

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