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Data Scientist Contract Jobs in Chicago, IL (NOW HIRING)

Alignerr

Data Scientist (Masters)

Chicago, IL · Remote

Hourly Contract * Location : Remote * Commitment : 10-40 hours/week What You'll Do * Design Advanced Challenges - Develop complex, domain-specific data science problems spanning hyperparameter ...

Prodigious Worldwide

Senior Data Scientist

Chicago, IL · On-site

Senior Data Scientist Publicis Re:Sources is the backbone of Publicis Groupe, the world's most ... This document does not create an employment contract, implied or otherwise, other than an "at-will ...

SonSoft

Data Scientist (No H1B)

Chicago, IL · On-site

Data Scientist (No H1B) Sonsoft, Inc. is a USA based corporation duly organized under the laws of ... This is a Contract job opportunity for you. * Only US Citizen, Green Card Holder, GC-EAD, H4-EAD ...

Sonsoft Inc

Data Scientist (No H1B)

Chicago, IL

Demonstrated experience in machine learning, predictive modeling, or statistics / data mining using ... This is a Contract job opportunity for you. * Only US Citizen , Green Card Holder , GC-EAD , H4-EAD ...

S4 Market Data

Market Data Analyst

Chicago, IL · Remote

... Scientist or someone with an IT background. Candidates MUST have experience in the Market Data realm and be able to administer Market Data contracts. Please read the description before you apply*

S4 Market Data

Market Data Analyst

Chicago, IL · On-site

... Scientist or someone with an IT background. Candidates MUST have experience in the Market Data realm and be able to administer Market Data contracts. Please read the description before you apply*

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Data Scientist Contract information

See Chicago, IL salary details

$38.7K

$126.5K

$202.6K

How much do data scientist contract jobs pay per year?

As of May 28, 2026, the average yearly pay for data scientist contract in Chicago, IL is $126,538.00, according to ZipRecruiter salary data. Most workers in this role earn between $101,500.00 and $140,200.00 per year, depending on experience, location, and employer.

What Does a Contract Data Scientist Do?

As a contract data scientist, your job is to provide independent support to a client for a freelance project or assignment. In this role, you may analyze a database to obtain useful information, use statistics to interpret the results, help identify trends within the industry, and make recommendations about the best course of action. Contract data scientists often help analyze historical data, build or refine templates and dashboards, assist full-time employees, and use predictive modeling to evaluate future company needs. The length of each contract varies, but it's possible to work with the same company for a year or more.

What are the key skills and qualifications needed to thrive as a Data Scientist Contract, and why are they important?

To thrive as a Data Scientist Contract, you need a strong background in statistics, data analysis, and programming, usually supported by a degree in a quantitative field. Proficiency with tools such as Python, R, SQL, machine learning libraries, and data visualization platforms is typically required, along with knowledge of cloud-based data environments. Excellent problem-solving abilities, adaptability, and strong communication skills help you translate complex data findings into actionable business insights. These skills ensure that contract data scientists can quickly deliver high-impact solutions and integrate seamlessly into diverse project teams.

What are some common challenges faced by data scientists working on a contract basis, and how can they be addressed?

Contract data scientists often face challenges such as quickly adapting to new teams and workflows, managing varying project scopes, and ensuring clear communication with stakeholders who may not have technical backgrounds. To address these, it's important to establish clear objectives and deliverables at the outset, maintain proactive communication, and document work thoroughly. Building strong relationships with both technical and non-technical team members can also help ensure project success and smooth collaboration.

What are Data Scientist contract jobs?

Data Scientist contract jobs are temporary positions where professionals analyze and interpret complex data to help organizations make informed decisions. Unlike full-time roles, contract data scientists are hired for a specific period, often to work on particular projects or to provide specialized expertise. These contracts can range from a few months to a year or more, and may be offered through staffing agencies, consultancies, or directly by companies. Contract roles offer flexibility and exposure to diverse industries, but typically do not include employee benefits such as health insurance or paid time off.

What is the difference between Data Scientist Contract vs Data Analyst Contract?

AspectData Scientist ContractData Analyst Contract
Required CredentialsBachelor's/Master's in Data Science, Statistics, or related fields; experience with machine learningBachelor's in Statistics, Mathematics, or related fields; proficiency in data visualization and SQL
Work EnvironmentAdvanced analytics, predictive modeling, machine learning projectsData cleaning, reporting, data visualization tasks
Employer & Industry UsageTech companies, finance, healthcare, consultingRetail, marketing, finance, government agencies

Data Scientist Contract roles focus on advanced analytics and machine learning, requiring higher-level skills and credentials. Data Analyst Contract positions involve data reporting and visualization, often with less emphasis on predictive modeling. Both roles are common in various industries, but they differ in complexity and scope.

More about Data Scientist Contract jobs
What are the most commonly searched types of Data Scientist jobs in Chicago, IL? The most popular types of Data Scientist jobs in Chicago, IL are:
What are popular job titles related to Data Scientist Contract jobs in Chicago, IL? For Data Scientist Contract jobs in Chicago, IL, the most frequently searched job titles are:
What job categories do people searching Data Scientist Contract jobs in Chicago, IL look for? The top searched job categories for Data Scientist Contract jobs in Chicago, IL are:
What cities near Chicago, IL are hiring for Data Scientist Contract jobs? Cities near Chicago, IL with the most Data Scientist Contract job openings:
Data Scientist Contract jobs near you
Infographic showing various Data Scientist Contract job openings in Chicago, IL as of May 2026, with employment types broken down into 1% As Needed, 93% Full Time, 1% Part Time, 1% Temporary, and 4% Contract. Highlights an 90% Physical, 5% Hybrid, and 5% Remote job distribution, with an average salary of $126,538 per year, or $60.8 per hour.

Data Scientist (Masters)

Alignerr

Chicago, IL • Remote

Other

This job post has expired today. Applications are no longer accepted.

Job description

Data Scientist (Masters) - AI Data Trainer
About the Role
What if your expertise in machine learning, statistical inference, and data engineering could directly shape how the world's most advanced AI systems reason through complex problems? We're looking for data scientists with graduate-level training to challenge, audit, and refine cutting-edge AI models - exposing their blind spots and building them into more reliable, rigorous tools.
This is a fully remote, flexible contract role. No prior AI industry experience required - just deep, hands-on command of data science and the ability to think critically about how models reason.
  • Organization
    : Alignerr
  • Type
    : Hourly Contract
  • Location
    : Remote
  • Commitment
    : 10-40 hours/week
What You'll Do
  • Design Advanced Challenges
    - Develop complex, domain-specific data science problems spanning hyperparameter optimization, Bayesian inference, cross-validation strategies, dimensionality reduction, and more
  • Author Ground-Truth Solutions
    - Write rigorous, step-by-step technical solutions - including Python/R scripts, SQL queries, and mathematical derivations - that serve as the gold standard for evaluating AI outputs
  • Audit AI-Generated Code
    - Evaluate AI-produced code using libraries like Scikit-Learn, PyTorch, and TensorFlow for technical accuracy, efficiency, and correctness
  • Sharpen AI Reasoning
    - Identify logical failures in AI outputs - data leakage, overfitting, improper handling of imbalanced datasets - and deliver structured feedback that improves how models think
  • Document Failure Modes
    - Systematically record where and how AI reasoning breaks down to help research teams harden model performance
Who You Are
  • Pursuing or holding a Master's or PhD in Data Science, Statistics, Computer Science, or a quantitative field with a strong emphasis on data analysis
  • Solid foundational knowledge across core areas such as supervised/unsupervised learning, deep learning, big data technologies (Spark, Hadoop), or NLP
  • Able to communicate complex algorithmic concepts and statistical findings clearly and concisely in writing
  • Naturally precise - you catch errors in code syntax, mathematical notation, and statistical logic that others overlook
  • Self-directed and reliable when working independently on task-based assignments
  • No prior AI or data annotation experience required
Nice to Have
  • Prior experience with data annotation, data quality assurance, or AI evaluation systems
  • Familiarity with production-level data science workflows - MLOps, CI/CD for models, or similar
  • Hands-on experience across multiple modelling domains or industry verticals
  • Background in academic research or technical writing
Why Join Us
  • Work directly with industry-leading AI research labs on frontier model development
  • Fully remote and asynchronous - work when and where it suits you
  • Freelance autonomy with meaningful, intellectually engaging work
  • High-impact contributions: your expertise directly shapes how advanced AI systems reason about data science
  • Potential for ongoing contracts and project renewals as new AI initiatives launch

Apply