Top 5 Principal data scientist Jobs in Louisville Co

Principal Data Scientist - AI Trainer
DataAnnotation —Thornton, CO
- $40 - $60 an hour
- Part-time
- Remote
- Computer Science
- English
- Master's degree
- Flexible schedule
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Principal AI/ML Engineer (Large Language Model)
CACI —Aurora, CO
- $114,600 - $252,100 a year
- Full-time
- Management
- Computer Science
- Bachelor of Science
- Health insurance
Information Sciences Professional (Intermediate, Senior, Principal - Open Rank), part-time (0.2 FTE; qualification dependent)
University of Colorado —Aurora, CO
- $28.06 - $46.75 an hour
- Part-time
- Remote
- Background check
- Computer Science
- Java
- Disability insurance
- Health insurance
Principal Machine Learning Engineer
AppFolio —Denver, CO
- $264,000 - $330,000 a year
- Full-time
- Computer Science
- Master's degree
- SQL
Principal AI/ML Engineer (Large Language Model) (TS/SCI) {S}
ARKA Group, L.P. —Aurora, CO
- $180,000 - $210,000 a year
- Email
- Background check
- Computer science
- Management
- Paid parental leave
- Health savings account
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Principal Data Scientist - AI Trainer
DataAnnotation —Thornton, CO
A bachelor's degree in a quantitative field is preferred (Statistics, Computer Science, Mathematics, Engineering, or similar); a master's or PhD is a plus.
$40 - $60 an hour
Quick Apply
Principal AI/ML Engineer (Large Language Model)
CACI —Aurora, CO
Interface with both internal and external leadership to communicate technical status. Experience with Python and data science / machine learning libraries (e.g.…
$114,600 - $252,100 a year

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Principal Data Scientist- Mortgage Sales & Strategy Analytics
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As one of the first engineering hires, you will help set the technical direction to ensure our audit wokrbench is usable and scalable from our our first 100…
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Principal Data Scientist - AI Trainer

DataAnnotation -
Thornton, CO

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Job Details

Part-time | Full-time | Contract
$40 - $60 an hour

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, up to $60 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:

2+ 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 is preferred (Statistics, Computer Science, Mathematics, Engineering, or similar); a 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

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principal data scientist jobs in louisville co

Principal Data Scientist - AI Trainer

Principal AI/ML Engineer (Large Language Model)

Information Sciences Professional (Intermediate, Senior, Principal - Open Rank), part-time (0.2 FTE; qualification dependent)

Principal Machine Learning Engineer

Principal AI/ML Engineer (Large Language Model) (TS/SCI) {S}

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