John Ngumba

Data Annotation Specialist with 4+ years of experience in 2D and 3D data annotation, data entry, and transcription, including 1 year as a 3D Data Annotation QA Specialist. Skilled in labeling, reviewing, and validating datasets for machine learning and AI applications. Strong attention to detail, high accuracy rates, and proven ability to meet deadlines in remote work environments.

3D Data Annotation QA Specialist at SAPIEN CORP (2024-08 – 2026-04)

• Performed quality assurance on 3D point cloud and LiDAR annotation datasets
• Reviewed and validated annotations for accuracy, consistency, and compliance with guidelines
• Identified errors and provided detailed feedback to annotation teams
• Improved overall dataset quality and reduced annotation error rates
• Collaborated with project managers to maintain quality standards and meet deadlines

Data Annotation Specialist (2D and 3D) at LISH AI LABS (2024-05 – Present)

• Annotated images, videos, and 3D datasets using bounding boxes, polygons, and segmentation techniques
• Labeled large datasets for AI and machine learning model training
• Followed detailed annotation guidelines to ensure consistency and accuracy
• Completed high-volume annotation tasks within tight deadlines
• Maintained high accuracy rates across multiple projects

Data Entry and Transcription Specialist at Freelance / Remote (2022-04 – Present)

• Entered, updated, and maintained data in spreadsheets and databases
• Transcribed audio and video files into accurate written text
• Ensured data integrity, confidentiality, and accuracy
• Delivered completed tasks within required turnaround times

Bachelor's Science in Community Resource Management – Kenyatta University, Machakos Campus