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Joseph MwitaJM
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Joseph Mwita

@josephmwita

Experienced data annotation specialist focused on high-quality AI data.

Kenya
Message

What I'm looking for

I seek roles where I can lead and improve annotation quality, collaborate with data scientists, mentor teams, and contribute to scalable ML data pipelines in a mission-driven, growth-oriented environment.

I am a detail-driven data annotation specialist with hands-on experience labeling image, text, audio, and 3D datasets for machine learning projects. I have led annotation teams, developed QA protocols, and trained staff to improve productivity and annotation accuracy.

My background includes senior annotation roles where I collaborated with data scientists to refine workflows, implemented automated quality checks, and managed multiple projects to timely completion. I also worked as a freelance Swahili linguist providing translation, transcription, and cultural adaptation of content.

I bring strong technical familiarity with tools like Dataloop, CVAT, Labelbox and V7, along with attention to detail, time management, and effective communication — all applied with a mission-driven, collaborative approach.

Experience

Work history, roles, and key accomplishments

WE

Freelance Swahili Linguist

Wecolize

Jan 2025 - Aug 2025 (7 months)

Provided Swahili translation, transcription, and proofreading services and developed original content, ensuring grammatical correctness and cultural appropriateness for client deliverables.

CC

Data Annotator

CVAT Company

Jan 2024 - May 2024 (4 months)

Annotated images, text, and audio datasets using various tools, contributed feedback to improve annotation guidelines, and assisted in developing automated quality checks to enhance accuracy.

KT

Audio Annotator

Klatch Technologies

Jun 2022 - Feb 2023 (8 months)

Labeled and transcribed 1,000+ hours of multilingual audio, maintained annotation accuracy through QA checks, and trained team members to improve productivity by 25% while complying with data privacy standards.

CloudFactory logoCL

Senior Annotation Specialist

Jan 2019 - Dec 2022 (3 years 11 months)

Led an annotation team to deliver high-quality labeled data for ML projects, implemented QA processes, collaborated with data scientists to refine protocols, and trained new team members to ensure timely project completion.

Education

Degrees, certifications, and relevant coursework

Pwani University logoPU

Pwani University

Bachelor of Science, Nursing and Public Health

2020 - 2024

Bachelor of Science in Nursing and Public Health completed at Pwani University with focus on nursing practice and public health principles.

KS

Kanga High School

Kenya Certificate of Secondary Education (K.C.S.E), Secondary Education

2016 - 2019

Completed secondary education and obtained the Kenya Certificate of Secondary Education (K.C.S.E).

Tech stack

Software and tools used professionally

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Joseph Mwita - Freelance Swahili Linguist - Wecolize | Himalayas