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Bolaji Yusuf

@bolajiyusuf

Transcriptionist at Plotweaver, annotating West African speech and reducing ASR word error rates by catching localized pronunciations.

Nigeria
Message

At Plotweaver, I transcribe and annotate complex West African audio, including recordings with background noise, overlapping speakers, and regional accents. My work has maintained 98%+ text accuracy across more than 150 hours of audio.

I segment recordings into millisecond-timestamped text and attribute speech to speakers. I also correct automated transcription errors caused by localized phrasing and switching between English, Pidgin, and Yoruba.

At AEZAR, I reviewed AI-generated transcripts and transcribed interviews, focus groups, and field research voice notes. I preserved cultural context and formatted deliverables for machine learning pipelines.

On a West African ASR model training dataset project, I tagged local slang and transcribed phonetic details that automated tools missed, helping reduce the target model’s Word Error Rate.

Experience

Work history, roles, and key accomplishments

AE

Transcriptionist & Data QC Reviewer

Aezar

Jun 2020 - Dec 2021 (1 year 6 months)

Reviewed and edited AI-generated transcripts, transcribed interviews and focus groups, and formatted data into JSON, SRT, and TXT for ML pipelines.

TranscriptionData QualityAudio reviewJSONSRT
Text
Machine Learning Data Preparation

Education

Degrees, certifications, and relevant coursework

University of Ilorin logoUI

University of Ilorin

Bachelor's Degree

2019 - 2024

Pursued a Bachelor's degree at the University of Ilorin from 2019 to 2024.

Tech stack

Software and tools used professionally

Availability

Looking for a job

Location

Nigeria

Authorized to work in

Salary expectations

20k+ CAD

Job categories

Skills

Audio TranscriptionAudio AnnotationSpeaker Diarization
Millisecond Timestamping
Audio Quality Assessment
Verbatim Transcription
Clean Verbatim Transcription
Automatic Speech Recognition (ASR)
Machine Learning Training Data
West African English Accent
Nigerian Standard English
Nigerian Pidgin (Fluent)
Yoruba
Code Switching
Phonetics

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