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Russell Tobin

Junior Data Analyst

Hybrid

London, United kingdom

£ 218 /day

Junior

Freelance

13-01-2026

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Skills

Python Big Data Problem-solving Attention to detail Machine Learning AWS Analytics PySpark

Job Specifications

Data Annotator / Data Analyst

Rate: £218.78 per day (PAYE)

Duration - Till end of the year

Location: London

Are you passionate about data quality and excited by the impact of AI and machine learning? We are looking for a Data Annotator / Data Analyst to play a key role in building and improving intelligent systems that power real-world applications.

This is an excellent opportunity to work at the intersection of data, analytics, and AI, collaborating closely with data scientists and machine learning engineers to ensure models are trained on high-quality, reliable datasets.

What You’ll Be Doing

Accurately annotate and label datasets for a variety of AI and machine learning use cases
Follow detailed annotation guidelines to ensure consistency, precision, and high data quality
Review and validate annotated data to identify errors, trends, and improvement opportunities
Analyze annotation outputs to provide insights that enhance model performance
Work closely with data scientists and ML engineers to refine annotation approaches and strategies
Use industry-standard annotation tools such as Label Studio or similar platforms
Perform basic data processing, checks, and validation using Python

What We’re Looking For

Bachelor’s degree in a relevant discipline
2+ years of experience annotating datasets for AI or machine learning problems
Hands-on experience with annotation tools (e.g. Label Studio or similar)
Strong attention to detail with excellent analytical and problem-solving skills
Ability to work independently while collaborating effectively with cross-functional teams
Basic working knowledge of Python for data handling and validation

Nice to Have

Experience with big data or processing technologies such as PySpark
Familiarity with AWS and cloud-based data workflows
Exposure to large-scale datasets and production AI environments

Why Apply?

Competitive £218.78 per day PAYE rate
Opportunity to contribute directly to cutting-edge AI and machine learning solutions
Collaborative, technical environment with exposure to real-world data challenges
Ideal role for someone looking to deepen their experience in AI-driven data work

About the Company

Bring Top Talent With Your Company With Russell Tobin Headquartered in New York City with offices throughout the United States, United Kingdom, Ireland, The Netherlands, Brazil, Canada, India, and Singapore, Russell Tobin--a division of Pride Global--offers total staffing and recruitment solutions across a wide range of industries. Our team of highly skilled recruiters, sourcers, and subject-matter experts understand exactly how to find world-class candidates that will fit your company's precise needs. Whether you need skill... Know more