David Jacob

Key Skills

Software

Lionbridge

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Freelancer Overview

I am a detail-oriented data annotator with over three years of hands-on experience supporting AI and machine learning projects for global organizations. My background includes high-accuracy data labeling, classification, and quality assurance, ensuring that training datasets meet strict guidelines and client requirements. I am highly skilled in using annotation platforms, Microsoft Office, Google Workspace, and remote collaboration tools to deliver consistent, reliable results in fast-paced environments. My expertise also extends to translation, copywriting, and virtual assistance, which has strengthened my attention to detail, adaptability, and ability to follow complex instructions. I thrive in remote work settings and am committed to maintaining the highest standards of accuracy and productivity in every project.

Labeling Experience

data annotator

LionbridgeImagePoint Key Point

Project Description Contributed to a large-scale LLM data annotation project focused on improving model performance in instruction following and reasoning tasks. Performed high-quality text annotation including prompt-response evaluation, relevance ranking, factuality checks, and error categorization. Annotated and reviewed thousands of text samples following detailed project guidelines. Quality assurance measures included multi-pass reviews, inter-annotator agreement scoring, and regular feedback from QA leads. Maintained consistently high accuracy scores while meeting tight turnaround deadlines.

Project Description Contributed to a large-scale LLM data annotation project focused on improving model performance in instruction following and reasoning tasks. Performed high-quality text annotation including prompt-response evaluation, relevance ranking, factuality checks, and error categorization. Annotated and reviewed thousands of text samples following detailed project guidelines. Quality assurance measures included multi-pass reviews, inter-annotator agreement scoring, and regular feedback from QA leads. Maintained consistently high accuracy scores while meeting tight turnaround deadlines.

2023 - 2025

Education

Work History