Nkoro Sandra
@nkorosandra
Data Annotation Specialist improving AI dataset quality with precise, guideline-driven labeling and award-winning accuracy.
NigeriaWhat I'm looking for
I’m a detail-oriented Data Annotation Specialist with proven experience labeling, categorizing, and validating diverse datasets for AI and machine learning—images, text, video, and audio included. I focus on maintaining annotation accuracy, adhering to quality standards, and identifying edge cases that strengthen training data.
In my current role at Hugo Tech, I collaborate with QA and development teams using annotation tools to meet tight deadlines, and I’ve been recognized with awards for Best Rater in team performance and Overall Best Rater for exceptional accuracy. I bring the same disciplined approach from prior data annotation work, consistently following strict guidelines while keeping projects on schedule.
Experience
Work history, roles, and key accomplishments
Data Annotator
Hugo Tech
Jul 2023 - Present (2 years 10 months)
Labeled and categorized image, text, video, and audio datasets for machine learning models while ensuring annotations met project guidelines. Identified and reported edge cases to improve training data quality and earned Best Rater and Overall Best Rater awards.
Data Annotation Specialist
Micro 1
Contributed to data labeling and classification for machine learning projects by following strict annotation guidelines and quality standards. Maintained project timelines and reviewed dataset accuracy to support reliable training data.
Education
Degrees, certifications, and relevant coursework
Project Safety Management Institute
Human Resource Management, Human Resource Management
Completed Human Resource Management training/program at Project Safety Management Institute in 2022.
EF SET
EF SET English Certificate, English
Completed an EF SET English Certificate with a stated Proficiency Level in 2022.
Alpha Consulting Services
Customer Relationship Management, Customer Relationship Management
Completed Customer Relationship Management training/program at Alpha Consulting Services in 2022.
Nnamdi Azikiwe University
Bachelor of Science, Sociology/Anthropology
2015 - 2019
Grade: Second Class Lower
Earned a B.Sc. in Sociology/Anthropology from Nnamdi Azikiwe University (2015–2019), graduating with Second Class Lower honors.
Availability
Location
NigeriaAuthorized to work in
Social media
Job categories
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