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Skilled, detail-oriented data annotation and linguistic professional with experience transcribing, annotating, and proofreading English and Swahili audio/video content. I ensure accuracy, consistency, and compliance with evolving annotation guidelines. I have project coordination experience—training onboarders, performing QA reviews, managing workflows, and delivering outputs within client deadlines. I am dependable, punctual, and focused on continuous quality improvement.…Skilled, detail-oriented data annotation and linguistic professional with experience transcribing, annotating, and proofreading English and Swahili audio/video content. I ensure accuracy, consistency, and compliance with evolving annotation guidelines. I have project coordination experience—training onboarders, performing QA reviews, managing workflows, and delivering outputs within client deadlines. I am dependable, punctual, and focused on continuous quality improvement.

David Masaku

Data Annotator, Online Trainer, Audio Transcriber, +2

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Skilled, detail-oriented data annotation and linguistic professional with experience transcribing, annotating, and proofreading English and Swahili audio/video content. I ensure accuracy, consistency, and compliance with evolving annotation guidelines. I have project coordination experience—training onboarders, performing QA reviews, managing workflows, and delivering outputs within client deadlines. I am dependable, punctual, and focused on continuous quality improvement.…Skilled, detail-oriented data annotation and linguistic professional with experience transcribing, annotating, and proofreading English and Swahili audio/video content. I ensure accuracy, consistency, and compliance with evolving annotation guidelines. I have project coordination experience—training onboarders, performing QA reviews, managing workflows, and delivering outputs within client deadlines. I am dependable, punctual, and focused on continuous quality improvement.

Available to hire

Skilled, detail-oriented data annotation and linguistic professional with experience transcribing, annotating, and proofreading English and Swahili audio/video content. I ensure accuracy, consistency, and compliance with evolving annotation guidelines.

I have project coordination experience—training onboarders, performing QA reviews, managing workflows, and delivering outputs within client deadlines. I am dependable, punctual, and focused on continuous quality improvement.

Skills

Experience Level

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Language

English

Fluent

Swahili

Advanced

Work Experience

Lead at King David Leadership

January 1, 2025 - January 1, 2025

Provided leadership and support within the organization. Delivered training and supported organizational goals.

Transcriptionist / Annotator / Proofreader at Clickspeed Limited

January 1, 2019 - January 1, 2021

Transcribed hundreds of hours of English and Swahili audio and video. Proofread transcripts for formatting and readability, ensuring clarity and professionalism. Tagged images and characters for various annotation projects. Maintained high accuracy, punctuality, and attention to detail, ensuring final deliverables met quality expectations.

Independent Contractor

January 1, 2019 - Present

Delivered independent data annotation and language-focused tasks aligned to client briefs and annotation standards. Maintained accuracy, attention to detail, and timely delivery while managing dataset preparation, transcription/annotation workflows, and quality checks.

Multilingual Data Annotation Specialist / Linguist at Argos

January 1, 2019 - Present

Responsible for accurate, consistent, and high-quality data labeling for AI training. Conduct QA reviews to identify errors and improve labeling precision. Collaborate with teams to maintain consistency across evolving project requirements and resolve data issues. Follow strict annotation guidelines and contribute to continuous improvement of dataset quality.

Independent Contractor / Transcriptionist / Annotator / Proofreader at Self-employed

January 1, 2019 - December 31, 2021

Transcribed hundreds of hours of English and Swahili audio and video files; proofread transcripts for formatting and readability; maintained high accuracy, punctuality, and attention to detail; ensured final products were clear, concise, and professional.

Data Annotation Specialist / Linguist at Argos Multilingual

January 1, 2019 - Present

Annotate and label datasets for AI model training; deliver accurate, high-quality training datasets; conduct QA reviews to identify errors and improve labeling precision; collaborate with teams to ensure consistency and resolve data issues; follow strict annotation guidelines across evolving project requirements. Transcribed hundreds of hours of English and Swahili audio/video; proofread transcripts for formatting and readability; maintained accuracy and professionalism; prepared and delivered labeled data to support client needs.

Lead Trainer / Project Coordinator at City Sol Ventures

January 1, 2016 - December 31, 2018

Led training initiatives and coordinated projects; managed client briefs, task assignment, and workflow; supervised teams to ensure accuracy, consistency, and timely delivery; collaborated with stakeholders to meet client requirements and improve processes.

Technical Sales Representative / Business Development Manager at Belcom Limited

January 1, 2013 - December 31, 2015

Drove business development and technical sales; built client relationships, identified opportunities, and supported growth initiatives; collaborated with product teams to align offerings with market needs; contributed to profitability through strategic market insights.