Celestine Ortserga

Key Skills

Software

Lionbridge

OneForma

Top Subject Matter

Nlp/nlu Domain Expertise

Text and Audio Data

Legal Services & Contract Review

Top Data Types

Text

Image

Document

Top Task Types

Classification

Object Detection

Transcription

Evaluation/Rating

Data Collection

Question Answering

Freelancer Overview

Freelance AI Data Annotator & Transcription Specialist. Brings 7+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Lionbridge, OneForma, and CrowdGen. Education includes Bachelor of Science, North American University. AI-training focus includes data types such as Text and labeling workflows including Classification.

Labeling Experience

Freelance AI Data Annotator & Transcription Specialist

LionbridgeTextClassification

As a Freelance AI Data Annotator & Transcription Specialist, I annotated and labeled large-scale datasets to enhance AI model accuracy for NLP tasks. I performed transcription, sentiment analysis, classification, and entity recognition tasks, always adhering to rigorous guidelines and SLAs. My work consistently supported AI model training and data quality assurance for clients around the world. • Executed high-quality text and audio annotation and transcription assignments • Conducted sentiment analysis and entity recognition (NER) on NLP datasets • Delivered stringent QA reviews ensuring dataset consistency and compliance • Maintained high throughput and met project-specific deadlines and standards

As a Freelance AI Data Annotator & Transcription Specialist, I annotated and labeled large-scale datasets to enhance AI model accuracy for NLP tasks. I performed transcription, sentiment analysis, classification, and entity recognition tasks, always adhering to rigorous guidelines and SLAs. My work consistently supported AI model training and data quality assurance for clients around the world. • Executed high-quality text and audio annotation and transcription assignments • Conducted sentiment analysis and entity recognition (NER) on NLP datasets • Delivered stringent QA reviews ensuring dataset consistency and compliance • Maintained high throughput and met project-specific deadlines and standards

2020 - Present

Education

Work History