Vincent Serrano

Key Skills

Software

Appen

Lionbridge

Telus

Top Subject Matter

Computer Vision

Nlp Domain Expertise

Speech Recognition

Top Data Types

Image

Audio

Text

Document

Top Task Types

Object Detection

Transcription

Classification

Freelancer Overview

Data Labeling Specialist. Brings 11+ years of professional experience across legal operations, contract review, compliance, and structured analysis. Core strengths include Appen, Lionbridge, and Telus. Education includes Doctor of Philosophy, University of Virginia (2024) and Master of Science, Virginia Tech (2018). AI-training focus includes data types such as Image, Audio, and Text and labeling workflows including Object Detection, Transcription, and Classification.

Labeling Experience

Data Labeling Specialist

AppenImageObject Detection

I annotated text, image, and video datasets for AI training projects, maintaining over 99% accuracy. My work involved verifying labeled data for quality, collaborating with AI engineers to clarify guidelines, and tracking progress in large datasets. I labeled 50,000+ images and 100,000+ text samples for computer vision and NLP model training, using platforms like Labelbox and Scale AI. • Collaborated with project managers to maintain precise guidelines. • Improved object recognition by labeling extensive image datasets. • Ensured quality and consistency on large text annotation projects. • Used Excel and cloud-based tracking for dataset maintenance.

I annotated text, image, and video datasets for AI training projects, maintaining over 99% accuracy. My work involved verifying labeled data for quality, collaborating with AI engineers to clarify guidelines, and tracking progress in large datasets. I labeled 50,000+ images and 100,000+ text samples for computer vision and NLP model training, using platforms like Labelbox and Scale AI. • Collaborated with project managers to maintain precise guidelines. • Improved object recognition by labeling extensive image datasets. • Ensured quality and consistency on large text annotation projects. • Used Excel and cloud-based tracking for dataset maintenance.

2025 - Present

AI Data Annotation Contractor

LionbridgeAudioTranscription

I performed audio, image, and text annotation for multiple AI projects across various industries. My primary tasks involved tagging audio clips for speech recognition models, labeling medical imaging datasets, and ensuring high-quality data according to detailed specifications. I collaborated with remote teams and managed workflow to meet daily annotation targets using Lionbridge tools and industry platforms. • Labeled audio clips that improved transcription accuracy by 15%. • Annotated medical imaging for AI diagnostic training purposes. • Resolved labeling ambiguities with team collaboration. • Consistently met annotation quotas on diverse data types.

I performed audio, image, and text annotation for multiple AI projects across various industries. My primary tasks involved tagging audio clips for speech recognition models, labeling medical imaging datasets, and ensuring high-quality data according to detailed specifications. I collaborated with remote teams and managed workflow to meet daily annotation targets using Lionbridge tools and industry platforms. • Labeled audio clips that improved transcription accuracy by 15%. • Annotated medical imaging for AI diagnostic training purposes. • Resolved labeling ambiguities with team collaboration. • Consistently met annotation quotas on diverse data types.

2023 - 2025

Data Entry & Annotation Assistant

TelusTextClassification

I assisted in labeling structured datasets for AI and machine learning projects, focusing on text classification and data quality checks. My responsibilities included maintaining detailed annotation records, participating in trainings, and performing consistency reviews across datasets. I supported remote annotation teams using TELUS tools, Excel, and third-party platforms like Labelbox and Prodigy. • Conducted accuracy checks to ensure high-quality labeled data. • Maintained metrics and annotation progress logs. • Learned new annotation tools through organized training sessions. • Supported annotation across multiple complex datasets.

I assisted in labeling structured datasets for AI and machine learning projects, focusing on text classification and data quality checks. My responsibilities included maintaining detailed annotation records, participating in trainings, and performing consistency reviews across datasets. I supported remote annotation teams using TELUS tools, Excel, and third-party platforms like Labelbox and Prodigy. • Conducted accuracy checks to ensure high-quality labeled data. • Maintained metrics and annotation progress logs. • Learned new annotation tools through organized training sessions. • Supported annotation across multiple complex datasets.

2020 - 2023

Education

Work History