William M.

Key Skills

Software

CVAT

Remotasks

OneForma

Mindrift

Appen

Don't disclose

Mercor

Sama

Other

Top Subject Matter

Industrial and manufacturing-style computer vision datasets (image/object annotation)

Operational record verification supporting AI/data workflows (administrative data QA)

Biometric data collection and verification for registration operations

Top Data Types

Document

Text

Image

Top Task Types

Classification

Segmentation

Object Detection

Text Generation

Transcription

Data Collection

Text Summarization

Bounding Box

Computer Programming/Coding

Freelancer Overview

Freelance AI Data Annotation, Web Support & Quality Review Projects. Brings 7+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include CVAT, Other, and Don't disclose. Education includes Certificate, University of Nairobi. AI-training focus includes data types such as Image, Medical, and DICOM and labeling workflows including Bounding Box, Text Generation, and Data Collection.

Labeling Experience

Operations & Quality Control Specialist (English Press Limited) — verification and quality assurance of production outputs.

Don't discloseDocument

Performed quality assurance reviews of machine-generated outputs by verifying compliance with operational guidelines and client requirements. Used structured verification processes to ensure accuracy and minimize operational errors in a high-volume production environment. Focused on maintaining data integrity through consistent checks and workflow monitoring.•Verified technical specifications, layouts, and production instructions against requirements.•Inspected machine outputs for strict structural and visual standards.•Tracked workflow progress and production consistency using internal systems.•Prepared reports and maintained documentation for QA and production activities.

2022 - Present

Freelance Data Annotator & Content Reviewer (remote) — text/metadata labeling and QA for ML projects.

CVATImageClassificationSegmentation

Freelance data annotation and quality assurance for industrial-style image datasets, including segmentation, object classification, and validation of labeling correctness. Reviewed auto-generated frames, corrected inaccurate, incomplete, or missing labels, and performed frame-by-frame checks to maintain guideline compliance and dataset integrity. Organized and verified metadata and annotation outputs to improve downstream AI training performance and model accuracy. • Worked on bounding boxes, semantic segmentation, and object detection-style labeling tasks for large-scale datasets. • Conducted dataset validation to detect inconsistencies, object detection errors, and labeling inaccuracies. • Followed evolving annotation guidelines while maintaining consistency across high-volume tasks. • Prepared and maintained productivity and project tracking records using spreadsheet and online tools.

2020 - 2021

Remote Data Entry & Digital Operations Assistant

OtherImageData CollectionText Generation

Participated in voter registration and by-election operations collecting and verifying biometric data using digital registration systems. Supported the capture and validation of facial images and fingerprint information while ensuring data accuracy and confidentiality. Followed registration procedures and compliance guidelines to help maintain the quality of collected records during high-volume field operations. • Captured and validated citizen identification details including facial images and fingerprint information • Verified citizen records for compliance with electoral guidelines • Assisted with secure handling and organized storage of digital voter data • Supported troubleshooting of biometric registration equipment during enrollment activities

2017 - 2021

N/A

N/A

Not specified

Education

Work History