Mercy Chege
AI Data Specialist and Civil Engineering Graduate
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About
Detail-oriented AI Data Specialist and Civil Engineering graduate with hands-on experience in machine learning data annotation, quality assurance, dataset validation, and workflow optimization. Proven track record of achieving 99% annotation accuracy across computer vision and NLP projects. Strong analytical thinker with technical documentation skills, engineering precision, and a structured problem-solving approach.
Experienced in collaborating with ML engineers to improve model performance and annotation standards. Seeking to contribute to AI model development, data operations, and quality assurance teams in a growth-driven technology organization.
Experience
Associate – Data & Quality Operations - Samasource - Nairobi
(2024-04 - 2025-11)
- Performed data validation, cleaning, and structured analysis for AI and QA projects.
- Designed and executed test cases to verify dataset integrity and annotation accuracy.
- Documented findings and reported insights to QA and ML teams.
- Tracked project metrics to enhance operational efficiency.
- Contributed to workflow automation and reporting improvements.
- Supported continuous improvement initiatives for large-scale AI data pipelines.
Data Annotator – Machine Learning Projects - AfricaAI Labs - Nairobi
(2023-10 - 2024-02)
- Labeled and categorized datasets for computer vision and NLP models.
- Achieved and maintained 99% annotation accuracy through structured quality reviews.
- Conducted internal quality checks to ensure compliance with ML project standards.
- Collaborated with engineers to refine annotation guidelines and improve model outputs.
- Trained and mentored new annotators on tools and best practices.
- Utilized tools including Labelbox, V7 Darwin, and internal AI platforms.
Industrial Attachment – Civil Engineering - County Government of Nakuru - Nakuru
(2022-07 - 2022-09)
- Assisted engineers in supervising infrastructure projects.
- Conducted site inspections to ensure compliance with approved drawings.
- Supported preparation of technical reports and construction documentation.
- Gained exposure to public sector engineering project management.
Construction Assistant - Private Construction Company
(2023-07 - 2023-09)
- Supported daily site operations including concrete works and masonry tasks.
- Maintained compliance with safety standards and site procedures.
- Assisted in interpreting construction drawings and measurements.
Education
Diploma - Civil Engineering - PC Kinyanjui Technical Training Institute (2021-09 - 2024-07)
