
Shafinaz Keply
Verified Expert in Engineering
Data Annotation and AI Training Specialist and Developer
Pokok Sena Kedah, Malaysia
Toptal member since October 16, 2025
Shafinaz is a results-driven data annotation and AI training specialist with a background in post-editing and localization. She brings precision and consistency to every project, ensuring data integrity and cultural relevance. Skilled in CVAT and Labelbox, Shafinaz supports clients in developing accurate, high-performing AI models through meticulous attention to detail.
Portfolio
Experience
- Google Workspace - 3 years
- Localization - 1 year
- CVAT - 1 year
- Data Labeling - 1 year
- Labelbox - 1 year
- Transcription - 1 year
- Data Annotation - 1 year
- Post-Editing - 1 year
Preferred Environment
Data Labeling, Data Annotation, Image Annotation, Localization, CVAT, Labelbox
The most amazing...
...project I've delivered combined data annotation and localization, improving AI model accuracy and ensuring culturally precise outputs.
Work Experience
Data Annotator, English Audio Transcription Project
Chemin
- Processed and annotated hundreds of English audio clips by segmenting speakers, tagging accents, and transcribing speech into accurate written text.
- Improved AI speech recognition accuracy by consistently delivering human-verified transcriptions with minimal revision requirements.
- Achieved high data quality standards by applying detailed linguistic and contextual analysis during transcription and labeling tasks.
Freelance AI Evaluator, Malay Language
Lilt
- Post-edited AI-generated Malay text to achieve authenticity and natural flow, ensuring it sounded native and contextually accurate.
- Reviewed existing text units for tone, clarity, and fluency, aligning outputs with project-specific linguistic and cultural standards.
- Provided feedback on AI-generated Malay content to support measurable improvements in model performance and quality.
Freelance Data Annotator
Freelance Client
- Delivered labeled images using CVAT and Labelbox, supporting computer vision model training with consistent, structured data.
- Maintained standardized annotation protocols and verified labeling accuracy to improve dataset quality and model reliability.
- Optimized workflow documentation and labeling processes, reducing revision time and improving project turnaround efficiency.
Experience
Audio Data Annotation and Transcription Project
I also reviewed my work for consistency and corrected any transcription errors before submission. The project demanded focus, precision, and the ability to handle a high volume of data while maintaining quality. Working remotely under a flexible, task-based system helped me develop strong time management and organization skills.
This experience deepened my understanding of how clean and accurate data contributes to building more innovative AI tools and speech recognition technologies.
Malay Text Post-editing and Linguistic Refinement Project
I worked with text data delivered in spreadsheet format, making systematic edits to ensure linguistic quality, readability, and cultural relevance. The goal was to enhance the naturalness of the text while maintaining consistency across multiple content types.
Through this project, I strengthened my ability to assess AI-generated content critically, apply linguistic judgment, and enhance model output quality through precise, human-verified editing.
Image Data Annotation Using CVAT
Throughout the process, I practiced applying annotation guidelines, naming conventions, and quality checks to maintain accuracy. I also learned how structured annotation data contributes to model performance and why attention to detail is essential in image-based AI projects.
This experience helped me strengthen my understanding of annotation workflows, data organization, and the importance of precision in real-world AI training tasks.
Education
Bachelor's Degree in Engineering
Universiti Putra Malaysia - Selangor, Malaysia
Skills
Libraries/APIs
ArcGIS
Tools
Google Workspace, Microsoft Excel, CVAT, Autodesk, MATLAB
Languages
SQL
Platforms
Labelbox
Other
Data Labeling, Data Annotation, Image Annotation, Localization, Lilt, Transcription, Time Management, Appen, Discord, Audio Segmentation, English Transcription, Quality Assurance (QA), Post-Editing, Linguistic Quality Assurance, Content Localization, Linguistics, Content Quality Assurance, Bounding Box Annotation
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