Data Annotator Analyst – AI / Machine Learning – Expedia Group

Senior Recruitment Manager at Atrium (EMEA) - 0208 773 7657Location: London (hybrid working)

Duration: End of 2026

About the Role

We are looking for a Data Annotator / Data Analyst to support the development and evaluation of AI and machine learning solutions. In this role, you will be responsible for annotating datasets, ensuring data quality, and collaborating with data scientists and engineers to improve model performance.

Key Responsibilities

Annotate and label datasets for various AI and machine learning use cases

Ensure high-quality, consistent, and accurate annotations following defined guidelines

Analyze annotated data to identify patterns, issues, and opportunities for improvement

Work closely with data scientists and ML engineers to refine annotation strategies

Use annotation tools (e.g., Label Studio or similar) to manage and review datasets

Perform basic data processing and validation using Python and related technologies

Qualifications

2+ years of experience annotating datasets for AI or machine learning problems

Hands‐on experience with annotation tools (e.g., Label Studio or similar platforms)

Strong attention to detail and analytical skills

Ability to work independently and collaborate within cross‐functional teams

Some knowledge of programming languages such as Python (preferred)

Experience with data processing technologies such as PySpark (preferred)

Familiarity with AWS services and cloud‐based data workflows (preferred)

Seniority level

Associate

Employment type

Contract

Job function

Information Technology

Industries

Technology, Information and Media

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Salary: GBP 36000 - 60000 per year Experience: 3 years required