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Freelance Machine Learning Data Annotation Jobs in McHenry, IL

micro1 AI

AI Trainer - Microbiology Expert

Elgin, IL · Remote

$70 - $90/hr

Document experimental findings and processes with a focus on clarity for AI training data ... Experience with AI, machine learning, or annotation projects related to biology or microbiology.

micro1 AI

AI Trainer - Microbiology Expert

Elgin, IL · Remote

$70 - $90/hr

Document experimental findings and processes with a focus on clarity for AI training data ... Experience with AI, machine learning, or annotation projects related to biology or microbiology.

Grainger Businesses

Data Engineer III

Lake Forest, IL · On-site

$104K - $174K/yr

This role reports to a Senior Manager of Machine Learning Engineering and partners closely with ... This role will own the data foundation behind ML and analytics use cases, enabling faster decision ...

Grainger Businesses

Data Engineer III

Lake Forest, IL · Hybrid

$104K - $174K/yr

This role reports to a Senior Manager of Machine Learning Engineering and partners closely with ... This role will own the data foundation behind ML and analytics use cases, enabling faster decision ...

Grainger Businesses

Data Engineer III

Lake Forest, IL · Hybrid

$104K - $174K/yr

This role reports to a Senior Manager of Machine Learning Engineering and partners closely with ... This role will own the data foundation behind ML and analytics use cases, enabling faster decision ...

Grainger Businesses

Data Scientist

Lake Forest, IL · Hybrid

$87K - $145K/yr

The Data Scientist plays a pivotal role in advancing Grainger's strategic objectives by leveraging machine learning and statistical analysis to uncover insights that drive business value and fuel ...

AbbVie

Principal Data Scientist

Mettawa, IL

The position requires deep expertise in applied machine learning, statistical modeling ... The Principal Data Scientist may lead technical workstreams with external analytics vendors and ...

Allergan

Principal Data Scientist

Mettawa, IL · On-site

$150 - $210/hr

The position requires deep expertise in applied machine learning, statistical modeling ... The Principal Data Scientist may lead technical workstreams with external analytics vendors and ...

AbbVie

Principal Data Scientist

Mettawa, IL · On-site

The position requires deep expertise in applied machine learning, statistical modeling ... The Principal Data Scientist may lead technical workstreams with external analytics vendors and ...

AbbVie

Principal Data Scientist

Mettawa, IL · On-site

$124K/yr

The position requires deep expertise in applied machine learning, statistical modeling ... The Principal Data Scientist may lead technical workstreams with external analytics vendors and ...

Prophecy Technologies

Generative AI Engineer

Schaumburg, IL · On-site

$95K - $131K/yr

... data from MS SQL Server, MySQL, and other relational databases. Required Skills: * Strong proficiency in Python for backend development and machine learning. * Solid experience with React for ...

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All JobsMachine Learning Data Annotation JobsFreelance Machine Learning Data Annotation JobsFreelance Machine Learning Data Annotation Jobs in McHenry, IL

Freelance Machine Learning Data Annotation information

See McHenry, IL salary details

$12

$21

$34

How much do freelance machine learning data annotation jobs pay per hour?

As of Aug 13, 2026, the average hourly pay for freelance machine learning data annotation in McHenry, IL is $21.52, according to ZipRecruiter salary data. Most workers in this role earn between $17.02 and $24.62 per hour, depending on experience, location, and employer.

What is the difference between Freelance Machine Learning Data Annotation vs Data Labeler?

AspectFreelance Machine Learning Data AnnotationData Labeler
CredentialsBasic understanding of annotation tools, sometimes with specialized domain knowledgeTypically no formal credentials required
Work EnvironmentRemote, flexible, project-basedOften remote or in-house, depending on employer
Industry UsageUsed in AI/ML development for training datasetsUsed in data preparation for various industries, including AI
Search/Comparison IntentFocuses on freelance opportunities, project scope, and toolsMore general, often employed by companies for data labeling tasks

Freelance Machine Learning Data Annotation involves independently completing annotation tasks for AI models, often with specialized tools and domain knowledge. Data Labelers typically perform similar tasks but may work as employees or contractors within a company. The main difference lies in the freelance nature and project-based work of data annotation roles.

What are the key skills and qualifications needed to thrive as a freelance machine learning data annotation specialist?

To thrive as a Freelance Machine Learning Data Annotation specialist, you need attention to detail, basic knowledge of data labeling concepts, and familiarity with machine learning data types. Experience with annotation tools (such as Labelbox, RectLabel, or CVAT) and understanding of data privacy protocols are commonly required. Strong communication, time management, and the ability to follow complex guidelines are essential soft skills for delivering accurate results. These skills ensure high-quality, consistent data annotation, which is critical for effective machine learning model training and performance.

What is freelance machine learning data annotation?

Freelance machine learning data annotation involves labeling or tagging data—such as images, text, audio, or video—to help train machine learning models. As a freelancer, you work independently or through platforms, completing specific annotation tasks assigned by companies or researchers. This work is essential because high-quality labeled data is required for AI systems to learn and make accurate predictions. Annotators may categorize images, transcribe speech, or highlight relevant information in documents. The flexibility of freelancing allows you to choose projects and work remotely.

What are some common challenges faced by freelance machine learning data annotators, and how can they be managed?

Freelance machine learning data annotators often encounter challenges such as maintaining data accuracy, handling repetitive tasks, and understanding complex annotation guidelines. Staying organized and regularly reviewing project instructions can help ensure consistency and quality in annotations. Additionally, communicating proactively with project managers and utilizing annotation tools efficiently can help manage workload and clarify uncertainties. Building expertise in different data types (text, image, audio) also allows annotators to diversify their projects and reduce monotony.

What job categories do people searching Freelance Machine Learning Data Annotation jobs in McHenry, IL look for?

The top searched job categories for Freelance Machine Learning Data Annotation jobs in McHenry, IL are:

What cities near McHenry, IL are hiring for Freelance Machine Learning Data Annotation jobs?

Cities near McHenry, IL with the most Freelance Machine Learning Data Annotation job openings:

Freelance Machine Learning Data Annotation jobs near you
Infographic showing various Freelance Machine Learning Data Annotation job openings in McHenry, IL as of August 2026, with employment types broken down into 1% As Needed, 74% Full Time, 22% Part Time, and 3% Contract. Highlights an 86% Physical, 4% Hybrid, and 10% Remote job distribution, with an average salary of $44,771 per year, or $21.5 per hour.

AI Trainer - Microbiology Expert

micro1 AI

Elgin, IL • Remote

$70 - $90/hr

Part-time

This job post has expired 1 day ago. Applications are no longer accepted.

Job description

Role Title: Microbiologist


Role Type: Contractor


Location: Remote


micro1 is engaging Microbiologists to contribute their scientific expertise to a unique customer project. In this role, you'll apply your expertise to help train next-generation AI systems. Your work will shape how models learn, reason, and perform through high-quality, real-world input. No prior experience in AI is required — your domain knowledge is what matters.


Key Responsibilities:

  1. Investigate and analyze the development, morphology, and behavior of microscopic organisms including bacteria, fungi, and algae.
  2. Contribute to the study of the relationship between microorganisms and disease, supporting projects involving medical microbiology.
  3. Assess the impact of antibiotics and other agents on microbial populations, providing insights for AI model accuracy.
  4. Document experimental findings and processes with a focus on clarity for AI training data.
  5. Collaborate with interdisciplinary teams to ensure scientific rigor and data integrity in AI development.
  6. Provide written and verbal expertise on microbiological phenomena and their relevance to real-world and computational contexts.
  7. Utilize rubrics and established evaluation criteria to assess data quality and support AI training workflows.


Required Skills and Qualifications:

  1. Bachelor’s degree or higher in Biology, Microbiology, Chemistry, or a related field.
  2. Extensive knowledge of bacterial, fungal, and algal systems.
  3. Demonstrated expertise in investigating microbial structure and physiology.
  4. Strong written and verbal communication skills for technical and interdisciplinary collaboration.
  5. Ability to document processes and findings clearly for integration into AI systems.
  6. Comfort working independently in a fully remote, digital-first environment.
  7. Attention to detail and commitment to scientific accuracy.


Preferred Qualifications:

  1. Prior experience developing or applying rubrics in scientific or educational contexts.
  2. Experience with AI, machine learning, or annotation projects related to biology or microbiology.
  3. Advanced degree (Master’s or PhD) in a relevant field.

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