Data Annotation Specialist | NER | PII Classification | Image & Text Annotation | CVAT | Label Studio | Labelbox | Roboflow Experienced in high-quality data labeling, tagging, and dataset preparation for machine learning and AI training. Skilled in Named Entity Recognition (NER), Personally Identifiable Information (PII) detection, bounding boxes, segmentation, and classification tasks. Background in banking records management with strong attention to detail, data accuracy, and confidentiality. Reliable, detail-oriented, and efficient—delivering consistent, guideline-compliant annotations with quick turnaround times and adaptability to new tools and workflows.…

Tabitha Marasi Kwamboka

Data Annotation Specialist | NER | PII Classification | Image & Text Annotation | CVAT | Label Studio | Labelbox | Roboflow Experienced in high-quality data labeling, tagging, and dataset preparation for machine learning and AI training. Skilled in Named Entity Recognition (NER), Personally Identifiable Information (PII) detection, bounding boxes, segmentation, and classification tasks. Background in banking records management with strong attention to detail, data accuracy, and confidentiality. Reliable, detail-oriented, and efficient—delivering consistent, guideline-compliant annotations with quick turnaround times and adaptability to new tools and workflows.…

Available to hire

Data Annotation Specialist | NER | PII Classification | Image & Text Annotation | CVAT | Label Studio | Labelbox | Roboflow

Experienced in high-quality data labeling, tagging, and dataset preparation for machine learning and AI training. Skilled in Named Entity Recognition (NER), Personally Identifiable Information (PII) detection, bounding boxes, segmentation, and classification tasks. Background in banking records management with strong attention to detail, data accuracy, and confidentiality.

Reliable, detail-oriented, and efficient—delivering consistent, guideline-compliant annotations with quick turnaround times and adaptability to new tools and workflows.

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Work Experience

Remote AI Data Annotation Specialist at Upwork (Freelance)
November 1, 2024 - Present
Delivered structured annotations across multiple computer vision datasets including agriculture, infrastructure, geospatial imagery, and industrial systems. Performed dense object detection and polygon segmentation for model training. Executed keypoint and landmark annotation for infrastructure mapping tasks. Produced consistent annotations aligned with project-specific guidelines. Handled multi-object and occlusion-heavy scenes requiring precision labeling. Supported NLP datasets through NER/PII tagging.
Records Management Officer at KWFT
July 1, 2022 - July 1, 2024
Coordinated digitization of physical records into structured digital systems. Maintained chain-of-custody for sensitive data. Supported data integrity and retrieval processes. Managed indexing and classification workflows.
Data Entry & Records Intern at KWFT
May 1, 2022 - June 1, 2022
Performed structured indexing and data verification. Supported digital documentation processes.

Education

Data Science & Machine Learning at RITA Africa
March 1, 2025 - March 18, 2026
Certificate in Computer Packages at East Africa Institute of Certified Studies
January 1, 2023 - March 18, 2026
Diploma in Library & Information Science at Technical University of Kenya
January 1, 2022 - March 18, 2026

Qualifications

Add your qualifications or awards here.

Industry Experience

Other
    paper Data Annotation Portfolio
    Annotation Annotated image datasets for object detection tasks using bounding boxes to support machine learning model training. Worked on text annotation projects focused on Named Entity Recognition (NER) and Personally Identifiable Information (PII).…

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