Sandra Olufemi- Odamo

Key Skills

Software

Appen

Lionbridge

Top Subject Matter

Audio transcription and annotation across interviews

Lectures Domain Expertise

and podcasts

Top Data Types

Audio

Text

Document

Top Task Types

Transcription

Freelancer Overview

Audio Transcriptionist & Annotator at Rev.com. Brings 7+ years of professional experience across legal operations, contract review, compliance, and structured analysis. Core strengths include Internal, Proprietary Tooling, and Appen. Education includes Bachelor of Science, Olabisi Onabanjo University (2017). AI-training focus includes data types such as Audio and labeling workflows including Transcription.

Labeling Experience

Audio Transcriptionist & Annotator at Rev.com

AudioTranscription

Reviewed and corrected pre-transcribed audio files using proprietary tools for maximum accuracy. Maintained high standards for quality, meeting a minimum of 98% accuracy across projects. Supported a distributed team to accomplish transcription and labeling tasks within strict deadlines. • Accurate transcription of diverse audio content • Utilization of proprietary and dedicated annotation software • Quality assurance through consistent review processes • Managed high annotation work volume weekly

Reviewed and corrected pre-transcribed audio files using proprietary tools for maximum accuracy. Maintained high standards for quality, meeting a minimum of 98% accuracy across projects. Supported a distributed team to accomplish transcription and labeling tasks within strict deadlines. • Accurate transcription of diverse audio content • Utilization of proprietary and dedicated annotation software • Quality assurance through consistent review processes • Managed high annotation work volume weekly

2022 - 2025

Linguistic Annotator (Contract) at Appen

AppenAudioTranscription

Performed detailed speech-to-text annotation to train ASR machine learning models. Reviewed large-scale pre-transcribed text data for accuracy and completeness. Assisted in building high-quality datasets under tight deadlines for linguistic AI tasks. • Speech-to-text annotation for ML • Pre-transcribed data correction • Dataset creation for ASR • Productivity metrics consistently achieved

Performed detailed speech-to-text annotation to train ASR machine learning models. Reviewed large-scale pre-transcribed text data for accuracy and completeness. Assisted in building high-quality datasets under tight deadlines for linguistic AI tasks. • Speech-to-text annotation for ML • Pre-transcribed data correction • Dataset creation for ASR • Productivity metrics consistently achieved

2020 - 2021

Transcription & Annotation Specialist at Lionbridge Technologies

LionbridgeAudioTranscription

Conducted quality checks and detailed labeling of speech audio for AI training purposes. Ensured linguistic accuracy through rigorous review of metadata and consistent labeling procedures. Supported multilingual tasks by applying standardized annotation guidelines across projects. • Audio annotation for AI • Metadata review and QA • Multilingual project support • Consistent annotation processes utilized

Conducted quality checks and detailed labeling of speech audio for AI training purposes. Ensured linguistic accuracy through rigorous review of metadata and consistent labeling procedures. Supported multilingual tasks by applying standardized annotation guidelines across projects. • Audio annotation for AI • Metadata review and QA • Multilingual project support • Consistent annotation processes utilized

2019 - 2020

Education

Work History