David Masaku
@davidmasaku
Data Annotation Specialist and Linguist delivering high-quality labeled datasets and precise QA for AI training.
What I'm looking for
I’m a Data Annotation Specialist and Linguist with over seven years of experience creating and validating annotated and labeled datasets for AI model training. I deliver accurate, consistent, and high-quality training datasets by following strict annotation guidelines across evolving project requirements.
I’ve worked as a project coordinator, linguist, transcriptionist, and Argos Multilingual proofreader—conducting QA reviews to identify errors and improve labeling precision. I collaborate with teams to resolve data issues quickly and maintain consistency from task briefs through final outputs.
Beyond annotation, I coordinate workflows, receive client briefs, assign tasks, and train and onboard transcribers on quality standards and guideline compliance. I’m dependable, detail-oriented, and motivated to keep improving quality—because clear, reliable data is what makes AI work.
Experience
Work history, roles, and key accomplishments
Transcriptionist & Annotator
Independent Contractor
Jan 2019 - Present (7 years 4 months)
Transcribed hundreds of hours of English and Swahili audio and video files. Proofread transcripts for formatting and readability while maintaining high accuracy and professionalism.
Education
Degrees, certifications, and relevant coursework
Clickspeed Limited
Certificate in Generative AI, Generative AI
2019 -
Earned or is pursuing a Certificate in Generative AI and served as Lead Trainer/Project Coordinator (2019–2021, ongoing), coordinating workflows and training/onboarding transcribers on guidelines and quality standards.
CodeSignal
Certificate in Python Programming, Python Programming
Completed a Certificate in Python Programming through CodeSignal in 2026.
King David Leadership
Certificate in Leadership, Leadership
Completed a Certificate in Leadership in 2025.
Availability
Location
Authorized to work in
Job categories
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