
John Mwenja
Data annotation
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About
I'm an undergraduate student pursuing a Bachelor of Technical Education (Electrical Option) at Kirinyaga University. My course focuses on both electrical engineering and teaching skills, so I'm learning how electrical systems, such as circuits, power systems, control systems, and electronics, work while also gaining the ability to effectively share that knowledge in a classroom or training setting. I enjoy working with technical concepts and practical problem-solving, and I'm especially interested in how electrical engineering connects with modern technologies like Artificial Intelligence, Data Analytics, and Robotics.
I'm comfortable with digital tools, good at organising information, and I pay close attention to detail when working on tasks. Overall, I'm a curious and adaptable learner who enjoys exploring new technologies and growing both my technical and analytical skills.
Experience
Data annotation - Fiver International Ltd
(2024-06 - 2025-08)
- Labelled 100k+ data points with 99% accuracy, leveraging analytical thinking to train 5 machine learning models.
- Processed and categorized text data using NLP techniques and organized datasets in SQL databases to improve Fiverr's search relevance and sentiment analysis.
- Performed regular audits and gold standard checks using Microsoft Excel to maintain 98%+ data accuracy.
General Transcription - Remotasks
- High-Accuracy Transcription: Converted complex audio/video files into text with 98%+ accuracy, ensuring precise spelling and grammar.
- AI Model Training: Provided high-quality data labeling and transcription to improve speech recognition and Natural Language Processing, demonstrating a willingness to learn new tools.
Education
Bachelor of Technical Education - Electrical Option - Kirinyaga University (2027)
Kenya Certificate of Secondary Education - KCSE - Murera High School (2022)
Kenya Certificate of Primary Education - KCPE - Kwihota Primary School (2017)

