Sandra Wicker

Key Skills

Software

Labelbox

Top Subject Matter

Social Science

General Machine Learning

Nlp Domain Expertise

Top Data Types

Text

Image

Top Task Types

Classification

Bounding Box

Freelancer Overview

Senior Data Annotation Specialist. Core strengths include Labelbox. Education includes Associate of Arts, Mesa Community College (2018). AI-training focus includes data types such as Text and Image and labeling workflows including Classification and Bounding Box.

Labeling Experience

Senior Data Annotation Specialist

LabelboxTextClassification

As a Senior Data Annotation Specialist, I was responsible for annotating and labeling complex datasets including text, image, and conversational data for machine learning projects. High standards of accuracy were maintained consistently while following detailed annotation guidelines. I also trained junior annotators and contributed to refining labeling frameworks. • Performed sentiment and intent classification for NLP training datasets. • Reviewed and audited datasets for AI quality assurance. • Collaborated with managers and data scientists on project requirements. • Used advanced annotation tools and ensured consistent, high-quality deliverables.

As a Senior Data Annotation Specialist, I was responsible for annotating and labeling complex datasets including text, image, and conversational data for machine learning projects. High standards of accuracy were maintained consistently while following detailed annotation guidelines. I also trained junior annotators and contributed to refining labeling frameworks. • Performed sentiment and intent classification for NLP training datasets. • Reviewed and audited datasets for AI quality assurance. • Collaborated with managers and data scientists on project requirements. • Used advanced annotation tools and ensured consistent, high-quality deliverables.

2020 - 2025

Data Labeling Analyst

LabelboxImageBounding Box

During my time as a Data Labeling Analyst, I labeled and categorized large-scale datasets for AI and predictive analytics. My work involved text classification, entity tagging, and image bounding box annotation. I also assisted in developing annotation guidelines and carried out dataset validation prior to model training. • Provided support for social science research datasets analysis. • Participated in error correction and quality control steps. • Contributed directly to improved workflow efficiency. • Utilized annotation platforms to enhance data workflows.

During my time as a Data Labeling Analyst, I labeled and categorized large-scale datasets for AI and predictive analytics. My work involved text classification, entity tagging, and image bounding box annotation. I also assisted in developing annotation guidelines and carried out dataset validation prior to model training. • Provided support for social science research datasets analysis. • Participated in error correction and quality control steps. • Contributed directly to improved workflow efficiency. • Utilized annotation platforms to enhance data workflows.

2017 - 2020

Education

Work History