Top 16839 Principal Engineer, Systems Jobs in Reston, VA

Principal Data Scientist - AI Trainer
DataAnnotation —Chantilly, VA
- $50 - $100 an hour
- Part-time
- Remote
- Computer Science
- English
- 3 years
- Flexible schedule
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2d
Simulation Engineer - AI Trainer
DataAnnotation —Herndon, VA
- $50 - $100 an hour
- Part-time
- Remote
- Computer Science
- English
- Mid-level
- Flexible schedule
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2d
Backend Software Engineer Lead (US Citizen/Secret Clearance Required)
IvoryCloud —Rockville, MD
- $145,000 - $175,000 a year
- Full-time
- Hybrid work
- Azure
- Computer Science
- System design
- Health insurance
- Dental insurance
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Micro-electromechanical Systems (MEMS) Engineer
General Technical Services, LLC —Adelphi, MD
- Full-time
- Background check
- Writing skills
- Microsoft Office
- Health savings account
- Relocation assistance
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Senior Systems Engineer at NRO – Long-Range Fires Integrator
CSI Consultants, Chantilly, VA —Chantilly, VA
- Full-time
- Military
- Bachelor's degree
- In-person
- Profit sharing
- Dental insurance
Quick Apply
3d
Data Analyst/Instructor (Kaiserslautern, Germany)
JANSON —Fairfax, VA
- Full-time
- Computer science
- Computer Science
- 3 years
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Salesforce Developer (Salesforce/Fonteva)
American Retirement Association —Arlington, VA
- $110,000 - $125,000 a year
- Full-time
- Hybrid work
- Software troubleshooting
- Salesforce
- Mid-level
- Free parking
- Profit sharing
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APPLICATIONS ENGINEER - POWER SYSTEMS RENTAL PROJECTS
Carter Machinery Company, Inc. —Manassas, VA
- $89,000 - $115,000 a year
- Dealership
- Customer service
- Ability to walk for extended periods
- Disability insurance
- Health insurance
Solutions Architect
RWD Consulting, LLC —Bethesda, MD
- $100,000 - $130,000 a year
- Full-time
- 7 years
- Computer Science
- System design
- Health insurance
- Dental insurance
Quick Apply
8d
Ontology Engineer (TS/SCI)
Vantor Services Inc. —Herndon, VA
- $137,000 - $200,200 a year
- Full-time
- 11+ years
- Bachelor's degree
- Machine learning
- 401(k) matching
- Pet insurance
Quick Apply
13d
Lead Identity Access Management (IAM) Engineer/Architect
Financial Industry Regulatory Authority, Inc. —Washington, DC
- $111,400 - $242,600 a year
- Extended hours
- Hybrid work
- Computer science
- 7 years
- Computer Science
- Paid jury duty
- Commuter assistance
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Instrumentation/Control System Technician
Loudoun Water —Ashburn, VA
- Overtime
- Mid-level
- Computer skills
- 4 years
Network Engineer, Lead - Cisco ISE / Firepower
AMERICAN SYSTEMS —Arlington, VA
- $155,000 - $180,000 a year
- Full-time
- 8 years
- Bachelor's degree
- Experience equivalent to degree accepted
- Retirement plan
Senior Application Engineer - Oracle ERP-PVM & Ivalua VenDoor
Navy Federal Credit Union —Vienna, VA
- $130,500 - $179,500 a year
- Online Application
- 7 years
- Computer Science
- Office
VMWare Engineer (Senior IT Analyst) - HYBRID
Westat —Bethesda, MD
- $140,000 - $155,000 a year
- Hybrid work
- Background check
- Computer Science
- System design
- Paid parental leave
- Health savings account
4d
ServiceNow Architect
Accenture Federal Services —Springfield, VA
- $108,400 - $198,300 a year
- DevOps
- System design
- JavaScript
Building Mechanical System Manager
UMD Department of Residential Facilities —College Park, MD
- $109,000 - $123,000 a year
- Extended hours
- Mid-level
- Driver's License
- Supervising experience
- Health insurance
- Dental insurance
Quick Apply
9d
Systems Engineer SME w/Poly
General Dynamics Information Technology —Herndon, VA
- $169,604 - $229,464 a year
- Multiple hires
- Mid-level
- Travel
- Up to 25% travel
- Paid time off
- 401(k) matching
13d
Senior Systems Engineer – Observability Solutions, Application Intake, and Analysis
Navy Federal Credit Union —Vienna, VA
- $111,600 - $163,100 a year
- Online Application
- Computer Science
- Office
- SQL
5d
Conveyance System Maintenance Technician
Loudoun Water —Ashburn, VA
- Overtime
- High school diploma or GED
- Driver's License
- Cleaning

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Principal Engineer, Systems jobs near Reston, VA

Principal Data Scientist - AI Trainer

DataAnnotation -
Chantilly, VA

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Job Details

Part-time | Full-time | Contract
$50 - $100 an hour
2 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

Principal Engineer, Systems jobs in Reston, VA

Principal Data Scientist - AI Trainer

Simulation Engineer - AI Trainer

Backend Software Engineer Lead (US Citizen/Secret Clearance Required)

Micro-electromechanical Systems (MEMS) Engineer

Senior Systems Engineer at NRO – Long-Range Fires Integrator

Data Analyst/Instructor (Kaiserslautern, Germany)

Salesforce Developer (Salesforce/Fonteva)

APPLICATIONS ENGINEER - POWER SYSTEMS RENTAL PROJECTS

Solutions Architect

Ontology Engineer (TS/SCI)

Lead Identity Access Management (IAM) Engineer/Architect

Instrumentation/Control System Technician

Network Engineer, Lead - Cisco ISE / Firepower

Senior Application Engineer - Oracle ERP-PVM & Ivalua VenDoor

VMWare Engineer (Senior IT Analyst) - HYBRID

ServiceNow Architect

Building Mechanical System Manager

Systems Engineer SME w/Poly

Senior Systems Engineer – Observability Solutions, Application Intake, and Analysis

Conveyance System Maintenance Technician

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