# Bolaji Yusuf

Bolaji Yusuf is a remote worker on Himalayas, Transcriber | Audio mapping / Annotation at Plotweaver, based in Nigeria.

Source: https://himalayas.app/@bolajiyusuf

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

| Detail | Value |
| --- | --- |
| Availability | Looking for a job |
| Location | Nigeria |
| Authorized to work in | Nigeria |
| Salary expectations | 20k+ CAD |
| Job categories | Transcriptionist, Audio Data Annotator, Data Quality Reviewer |
| Skills | Audio Transcription, Audio Annotation, Speaker 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 |

## About

```text
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

### Transcriber | Audio mapping / Annotation (current)

Plotweaver. Nov 2022 - Present

```text
Transcribed over 150 hours of multi-speaker audio with 98%+ accuracy, segmented audio into timestamped chunks, and flagged phonetic misinterpretations in ASR outputs.
```

Skills: Audio-Annotation, Transcription, Speaker-Diarization, Millisecond-Timestamping, ExpressScribe, Audacity, Slack, Notion, Jira, Google-Workspace, Google-Docs, Google-Sheets

### Transcriptionist & Data QC Reviewer

Aezar. Jun 2020 - Dec 2021

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

Skills: Transcription, Data-Quality, Audio-review, JSON, SRT, Text, Machine-Learning-Data-Preparation

## Education

### University of Ilorin

Bachelor's Degree. 2019 - 2024

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

## Tech stack

- Google Docs
- Slack
- Jira
- JSON
- Google Workspace
- Notion
- Google Sheets
- Audacity

To contact Bolaji, message them from this profile with a Himalayas employer account: [Hire on Himalayas](https://himalayas.app/hire).

## People also viewed

- [Uchea Ifeanyi](https://himalayas.app/@ucheaifeanyi): Audio & Video Annotation Specialist, OneForma
- [Olatunde Raheem](https://himalayas.app/@olatunderaheem): Freelance Data Annotator, Freelance
- [Adegbenro Adewale](https://himalayas.app/@adegbenroadewale): Freelance Data Annotator, Freelance
- [Seyi Adeeko](https://himalayas.app/@jatrillions): Freelance AI Data Specialist, Freelance
- [Oyewale Oluwaseun](https://himalayas.app/@oyewaleoluwaseun): Content Reviewer / Reporter, Opera News Nigeria
- [Ineznina Chinenye](https://himalayas.app/@inezninachinenye): AI Data Labeling Specialist, Freelance
- [Abdullahi Idris](https://himalayas.app/@abdullahiidris1): Transcriber, Self Practice
- [Emmanuel Akintola](https://himalayas.app/@emmanuelakintola1): Data Annotator/Transcriptionist, Spout
- [Uchechi Michaelina](https://himalayas.app/@uchechimichaelina): Nigerian Pidgin Transcriptionist, Black History Cultural Project
- [Maimuna Alkasim](https://himalayas.app/@maimunaalkasim): English Transcriptionist, GoTranscript