Top 1254 Data scientist Jobs in Fairfax, Va

Principal Data Scientist - AI Trainer
DataAnnotation —Chantilly, VA
- $50 - $100 an hour
- Part-time
- Remote
- Computer Science
- English
- 3 years
- Flexible schedule
Quick Apply
7d
Computational Neuroscientist - AI Trainer
DataAnnotation —Manassas, VA
- $50 - $100 an hour
- Part-time
- Remote
- Computer Science
- Writing skills
- English
- Flexible schedule
Quick Apply
4d
Data Scientist
VivusTech —Chantilly, VA
- Mid-level
- Bachelor's degree
- Mentoring
Data Scientist
Thomson Reuters —McLean, VA
- $102,200 - $189,800 a year
- Full-time
- Remote
- Computer Science
- 3 years
- SQL
- Commuter assistance
- Health savings account
10d
Data Scientist
Steampunk —McLean, VA
- $125,000 - $160,000 a year
- Remote
- Azure
- Computer Science
- Customer service
Data Scientist - All Levels
Interclypse, Inc. —Reston, VA
- Computer science
- Azure
- Computer Science
- Paid jury duty
- Health savings account
Research Data Scientist
Swayable —Washington, DC
- $125,000 - $165,000 a year
- Remote
- Computer Science
- Mid-level
- Master's degree
- Health insurance
- Dental insurance
Senior Data Scientist
Leidos —Chantilly, VA
- $154,050 - $278,475 a year
- Full-time
- Computer Science
- 11+ years
- Bachelor's degree
AI/ML Decision Intelligence Lead
Peraton —Herndon, VA
- $146,000 - $234,000 a year
- Bachelor of Science
- System design
- 11+ years
- Health savings account
- Paid holidays
Senior Data Scientist - Operational Analytics
Peraton —Herndon, VA
- $104,000 - $166,000 a year
- Computer Science
- Bachelor of Science
- 8 years
- Health savings account
- Paid holidays
Data Scientist - AI Trainer
DataAnnotation —Falls Church, VA
- $50 - $100 an hour
- Part-time
- Remote
- Writing skills
- English
- Mid-level
- Flexible schedule
Quick Apply
Senior Agentic AI/ML Engineer
General Dynamics Information Technology —Arlington, VA
- $170,000 - $230,000 a year
- Computer science
- Computer Science
- Office
- Paid time off
- 401(k) matching
Technical Lead, GenAI & Automation Engineering (Risk Engineering)
Freddie Mac —McLean, VA
- $146,000 - $218,000 a year
- Full-time
- Azure
- Computer Science
- 5 years
Senior Agentic AI/ML Engineer
General Dynamics Information Technology —Arlington, VA
- $170,000 - $230,000 a year
- Computer science
- Computer Science
- Office
- Paid time off
- 401(k) matching
Financial Model Development Senior (Python Developer)
Freddie Mac —McLean, VA
- $130,000 - $196,000 a year
- Full-time
- Computer Science
- 5 years
- Office
Senior Data Scientist (Machine Learning & Geospatial Analytics) – TS/SCI Required
Leidos —Springfield, VA
- $92,300 - $166,850 a year
- Full-time
- Computer science
- Computer Science
- Writing skills
Transportation Data Scientist (AI Solutions)
Leidos —McLean, VA
- $87,100 - $157,450 a year
- Full-time
- Computer Science
- Mid-level
- Master's degree
Senior GEOINT Data Scientist
MANTECH —Springfield, VA
- Full-time
- Research
- Office
- Java
11d
Senior Data Scientist
Embedded Alliance —Springfield, VA
- $120,000 - $140,000 a year
- Full-time
- Office
- SQL
- Organizational skills
Quick Apply
AI/ML Engineer
Peraton —Herndon, VA
- $135,000 - $216,000 a year
- System design
- Office
- Java
- Health savings account
- Paid holidays

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data scientist jobs near fairfax, va

Principal Data Scientist - AI Trainer

DataAnnotation -
Chantilly, VA

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Job Details

Part-time | Full-time | Contract
$50 - $100 an hour
7 days ago

Benefits

Flexible schedule

Qualifications

Software coding
Design of experiments
English
Providing code feedback

Full Job Description

DataAnnotation is committed to creating quality AI. Help train AI chatbots while gaining the flexibility of remote work and choosing your own schedule.

We are looking for an existing Principal Data Scientist - AI Trainer to help train AI models. AI models are increasingly capable of performing complex analytical and scientific reasoning — but these systems still need practitioners with real-world quantitative experience to validate whether the outputs actually hold up in practice. That's where you come in.

You'll work closely with state-of-the-art AI models on tasks like evaluating AI-generated quantitative analysis, solving technical problems, and providing feedback that directly shapes how these systems reason about data, models, and scientific problems. Whether your background is in data science, astrophysics, economics, biostatistics, operations research, or any other quantitative field, if you think rigorously about data and models, your skills are directly applicable here. You can fit this work alongside a full-time role, or treat it as your primary focus, choosing projects and schedules that align with your availability and goals.

To get started, once you sign up for an account, you'll take a short assessment (this serves as our version of an interview). If you pass, you'll receive an email confirmation, and paid work will become available on our platform.

Advantages of contracting with us:

Fully remote: work from anywhere in the US, Canada, UK, Ireland, Australia, and New Zealand.
Flexible schedule: choose which projects you take on and when you work, on your own computer, from the comfort of your own home.
Competitive pay: projects are paid hourly at $50 to $100 USD per hour, with bonus rates available on some projects.
Impact: help shape the future of AI systems built to reason about data and analytics.

Responsibilities:

Evaluate AI-generated quantitative work, including statistical analysis, predictive modeling, scientific reasoning, and data-driven insights, for technical accuracy and real-world validity.
Design and solve quantitative problems used to train and benchmark AI systems, spanning areas like forecasting, experimental analysis, optimization, and statistical inference.
Write clear technical explanations and well-documented analytical code.
Provide feedback that directly shapes the next generation of AI models built for quantitative reasoning.

Qualifications:

3+ years of hands-on experience in a quantitative role or research environment — such as data science, statistics, economics, finance, physics, biology, epidemiology, operations research, or any adjacent field.
Some coding experience required, with comfort writing and reviewing analytical code end-to-end.
Practical experience with statistical methods, predictive modeling, and experiment design (e.g., A/B testing, hypothesis testing, regression, classification, time-series forecasting).
Fluency in English (native or bilingual level) with strong writing skills.
A bachelor's degree in a quantitative field preferred (Statistics, Computer Science, Mathematics, Engineering, or similar); an advanced degree (Master’s or PhD) is a plus.
Relevant credentials are a plus (e.g., Kaggle Competition ranking, AWS/GCP ML certifications, or equivalent demonstrated expertise).

Note: Payment is made via PayPal. We will never ask for any money from you. This job is only available to those in the US, Canada, UK, Ireland, Australia, and New Zealand.

Quick Apply

Refine Your Search

data scientist jobs in fairfax, va

Principal Data Scientist - AI Trainer

Computational Neuroscientist - AI Trainer

Data Scientist

Data Scientist

Data Scientist

Data Scientist - All Levels

Research Data Scientist

Senior Data Scientist

AI/ML Decision Intelligence Lead

Senior Data Scientist - Operational Analytics

Data Scientist - AI Trainer

Senior Agentic AI/ML Engineer

Technical Lead, GenAI & Automation Engineering (Risk Engineering)

Senior Agentic AI/ML Engineer

Financial Model Development Senior (Python Developer)

Senior Data Scientist (Machine Learning & Geospatial Analytics) – TS/SCI Required

Transportation Data Scientist (AI Solutions)

Senior GEOINT Data Scientist

Senior Data Scientist

AI/ML Engineer

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