Hello! I’m David Masaku, a multilingual data annotation specialist and linguist based in Nairobi, Kenya. With over seven years of experience in annotating and QA-checking multilingual datasets for AI model training, I’ve collaborated with cross-functional teams to deliver accurate, high-quality training data while adhering to evolving project guidelines. I’m passionate about turning complex language and media data into reliable, scalable datasets that power AI systems. I thrive in collaborative environments, enjoy coaching teammates on guidelines, and take pride in delivering clear, well-documented work. When I’m not labeling data or transcribing, I’m exploring new ways to optimize data workflows, improve annotation accuracy, and support clients with thoughtful, client-focused service. Open to opportunities globally, I’m eager to contribute to ambitious AI/data projects with attention to detail and a proactive mindset.

David Masaku

Hello! I’m David Masaku, a multilingual data annotation specialist and linguist based in Nairobi, Kenya. With over seven years of experience in annotating and QA-checking multilingual datasets for AI model training, I’ve collaborated with cross-functional teams to deliver accurate, high-quality training data while adhering to evolving project guidelines. I’m passionate about turning complex language and media data into reliable, scalable datasets that power AI systems. I thrive in collaborative environments, enjoy coaching teammates on guidelines, and take pride in delivering clear, well-documented work. When I’m not labeling data or transcribing, I’m exploring new ways to optimize data workflows, improve annotation accuracy, and support clients with thoughtful, client-focused service. Open to opportunities globally, I’m eager to contribute to ambitious AI/data projects with attention to detail and a proactive mindset.

Available to hire

Hello! I’m David Masaku, a multilingual data annotation specialist and linguist based in Nairobi, Kenya. With over seven years of experience in annotating and QA-checking multilingual datasets for AI model training, I’ve collaborated with cross-functional teams to deliver accurate, high-quality training data while adhering to evolving project guidelines. I’m passionate about turning complex language and media data into reliable, scalable datasets that power AI systems.

I thrive in collaborative environments, enjoy coaching teammates on guidelines, and take pride in delivering clear, well-documented work. When I’m not labeling data or transcribing, I’m exploring new ways to optimize data workflows, improve annotation accuracy, and support clients with thoughtful, client-focused service. Open to opportunities globally, I’m eager to contribute to ambitious AI/data projects with attention to detail and a proactive mindset.

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Language

English
Fluent
Swahili
Advanced

Work Experience

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.
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.
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.

Education

Add your educational history here.

Qualifications

Cisco Certified Network Associate (CCNA)
January 11, 2030 - May 12, 2026
CompTIA Network+ Certification
January 11, 2030 - May 12, 2026
A+ Certification (Hardware)
January 11, 2030 - May 12, 2026
Certificate in Leadership
January 11, 2030 - May 12, 2026
Certificate in Python Programming
January 11, 2030 - May 12, 2026
Certificate in Generative AI
January 11, 2030 - May 12, 2026
Data Annotation (Text, Image, Audio)
January 11, 2030 - May 12, 2026

Industry Experience

Media & Entertainment, Education, Professional Services, Software & Internet, Other