Jacob V.

Key Skills

Software

Mercor

Data Annotation Tech

Appen

Telus

Toloka

Surge AI

Snorkel AI

Scale AI

Remotasks

OneForma

Mindrift

Micro1

Label Studio

Labelbox

iMerit

Top Subject Matter

Generalist (English language, writing, multiple writing styles and content types)

Generalist (English language, writing, multiple content types)

Legal Services & Contract Review

Top Data Types

Text

Image

Video

Top Task Types

Classification

Computer Programming/Coding

Evaluation/Rating

Red Teaming

RLHF

Text Summarization

Question Answering

Text Generation

Object Detection

Prompt + Response Writing (SFT)

Segmentation

Bounding Box

Freelancer Overview

I am an experienced AI Data Annotator with 3+ years of hands-on work in data labeling, image and video annotation, text categorization, dataset cleaning, and AI output evaluation. I have labeled 50,000+ annotation instances, completed 10,000+ pairwise AI response comparisons, and maintained a 92% accuracy rate and quality scores above 87% across all projects. I hold a Bachelor of Arts in English Literature and am a native English speaker. I am reliable, detail-oriented, and consistent at following complex project guidelines independently in fully remote, high-volume annotation environments. I am available immediately and authorized to work in the United States.

Labeling Experience

AI Training Specialist

MercorText

As an AI Training Specialist at Mercor AI, I evaluated and edited AI-generated English content for quality, clarity, and adherence to instruction. I developed writing prompts and tone guidelines to improve the naturalness and accuracy of language model outputs. I provided detailed written feedback and performed large-scale human preference ranking for AI training and quality optimization. • Responsible for over 500 prompt and guideline creations for LLMs • Delivered 200+ written feedback documents impacting model refinement • Fact-checked and reviewed AI-generated responses across diverse topics • Completed preference ranking for more than 10,000 response pairs

2025 - 2026

Data Annotation Specialist

Data Annotation TechImageBounding Box

As a Data Annotation Specialist at DataAnnotation.Tech, I annotated and analyzed a wide variety of text data to improve AI language understanding. My work involved evaluating AI-generated text for linguistic quality and verifying annotation accuracy. I corrected errors and maintained high consistency for large volumes of annotations supporting language model training. • Verified quality of over 50,000 annotation instances • Applied linguistic and editorial standards throughout annotation processes • Achieved 89% inter-annotator agreement on classification tasks • Focused on naturalness, coherence, and grammatical accuracy in text evaluation

2024 - 2025

Education

Work History