Oluchi Onyephoto

Key Skills

Software

Labelbox

Doccano

Top Subject Matter

Speech Recognition and NLP Datasets

Conversational AI and NLP

Legal Services & Contract Review

Top Data Types

Audio

Text

Document

Top Task Types

Transcription

Entity (NER) Classification

Freelancer Overview

Freelance Transcriptionist & Data Linguist. Brings 2+ years of professional experience across legal operations, contract review, compliance, and structured analysis. Core strengths include Labelbox and Doccano. Education includes Bachelor of Arts, University of Cambridge (2022). AI-training focus includes data types such as Audio and Text and labeling workflows including Transcription and Entity (NER) Classification.

Labeling Experience

Freelance Transcriptionist & Data Linguist

LabelboxAudioTranscription

As a Freelance Transcriptionist & Data Linguist at EC Innovation, I transcribed, annotated, and evaluated multilingual audio for AI-driven speech recognition systems. Tasks involved accurate speech-to-text conversion, data entry review, and linguistic annotation in multiple languages. I collaborated with teams to moderate content, flag errors, and enhance dataset quality standards. • Provided speech-to-text transcription and annotation services across English, French, Spanish, and more. • Reviewed and tagged metadata, flagged utterances, and annotated errors for NLP datasets. • Ensured labeling accuracy and consistency, maintaining 99% quality across projects. • Utilized tools such as Labelbox, Doccano, Prodigy, and audio-editing software.

As a Freelance Transcriptionist & Data Linguist at EC Innovation, I transcribed, annotated, and evaluated multilingual audio for AI-driven speech recognition systems. Tasks involved accurate speech-to-text conversion, data entry review, and linguistic annotation in multiple languages. I collaborated with teams to moderate content, flag errors, and enhance dataset quality standards. • Provided speech-to-text transcription and annotation services across English, French, Spanish, and more. • Reviewed and tagged metadata, flagged utterances, and annotated errors for NLP datasets. • Ensured labeling accuracy and consistency, maintaining 99% quality across projects. • Utilized tools such as Labelbox, Doccano, Prodigy, and audio-editing software.

2018 - Present

Language QA Assistant (Contract)

DoccanoTextEntity Ner Classification

As a Language QA Assistant (Contract) at a confidential AI Startup, I conducted detailed quality assessments for conversational AI training data. My role focused on labeling named entities and sentiment within multilingual text to support NLP model development. I also provided input for dialect comparison and bias reduction strategies. • Labeled entities and classified sentiment in large-scale conversational datasets. • Evaluated and assured the quality of AI-generated outputs across multiple languages. • Contributed to dialect variation analysis and flagged biased or sensitive language data. • Applied Doccano and Labelbox for efficient annotation and validation.

As a Language QA Assistant (Contract) at a confidential AI Startup, I conducted detailed quality assessments for conversational AI training data. My role focused on labeling named entities and sentiment within multilingual text to support NLP model development. I also provided input for dialect comparison and bias reduction strategies. • Labeled entities and classified sentiment in large-scale conversational datasets. • Evaluated and assured the quality of AI-generated outputs across multiple languages. • Contributed to dialect variation analysis and flagged biased or sensitive language data. • Applied Doccano and Labelbox for efficient annotation and validation.

2023 - 2023

Education

Work History