Data Annotator in City of London

11 months contract/PAYE is £218.78 per day/hybrid/Onsite/London

Job Title: Data Annotator / Data Analyst

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

Bachelor’s degree

• 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)
• Attention to detail and strong analytical skills
• Ability to work independently and collaborate within cross-functional teams
• Some knowledge of programming languages such as Python is preferred
• Experience with data processing technologies such as PySpark is preferred
• Familiarity with AWS* services and cloud-based data workflows is preferred