Lewis Oketch
@lewisoketch
Experienced data annotator specializing in autonomous vehicle datasets and quality.
What I'm looking for
I am an experienced data annotator with deep expertise in autonomous vehicle annotation, having labeled vehicles, pedestrians, cyclists, lane markings, and traffic infrastructure across large-scale projects. I consistently deliver high-quality annotations and collaborate closely with data scientists and engineering teams to improve model accuracy.
Throughout my career I have annotated tens of thousands of data points, maintained exceptionally high accuracy rates, and contributed to process optimization and guideline improvements that increased efficiency and reduced errors. I adapt quickly to different annotation tools and meet tight deadlines while preserving attention to detail.
I am seeking a permanent role where I can apply my annotation skills, support long-term projects, and add sustained value through rigorous data management, constructive feedback, and a commitment to continuous improvement.
Experience
Work history, roles, and key accomplishments
Data Annotator
Toloka
Dec 2025 - Present (1 month)
Annotated autonomous driving datasets using bounding boxes, polylines, and polygons, performed frame-by-frame annotation for object tracking, and reviewed corrections to meet strict QA standards under tight deadlines.
Annotated over 50,000 data points with 95% accuracy, collaborated with data scientists to improve labeling models (97% precision/recall gains) and implemented verification methods that increased efficiency by 25%.
Data Annotator
Samasource Kenya
Jun 2021 - Nov 2025 (4 years 5 months)
Accurately labeled and annotated over 70,000 datasets and completed 6,000+ tasks, maintaining a 99% accuracy rate and improving annotation guidelines to boost model training effectiveness.
Education
Degrees, certifications, and relevant coursework
Management University of Africa
Bachelor of Commerce, Commerce
2017 - 2021
Completed a Bachelor of Commerce degree with noted academic achievement.
Tenwek High School
Kenya Certificate of Secondary Education, Secondary Education
2013 - 2016
Grade: C+
Completed secondary education and obtained KCSE with a mean grade of C+.
Availability
Location
Authorized to work in
Job categories
Interested in hiring Lewis?
You can contact Lewis and 90k+ other talented remote workers on Himalayas.
Message LewisFind your dream job
Sign up now and join over 100,000 remote workers who receive personalized job alerts, curated job matches, and more for free!
