Stephen Wambui
@stephenwambui1
I improve AI datasets with accurate, guideline-driven image labeling and timely delivery.
KenyaWhat I'm looking for
I am a Data annotation specialist with a wide range of experience and skills in different fields related to Annotation. I have performed image and data annotation with high accuracy for diverse AI projects on multiple platforms, while maintaining consistency and meeting deadlines.
I am also able to follow complex guidelines and work independently, with good communication and reporting skills. Beyond annotation, I bring civil and water engineering training, have supervised construction activities ensuring compliance with safety and engineering standards, and have monitored water quality standards, plus I provide personalized communication skills tutoring through zoom classes and google meet.
Experience
Work history, roles, and key accomplishments
Online Tutor (Communication)
Independent Tutor
Mar 2023 - Present (3 years 3 months)
Provided personalized communication skills tutoring to students globally through Zoom and Google Meet. Delivered structured support while tracking progress and addressing learning needs.
Data Annotator
Clickworker
Mar 2023 - Present (3 years 3 months)
Annotated images and datasets to support machine learning model training while maintaining consistency across tasks. Reported data issues for quality control to help ensure dataset reliability.
Performed image and data annotation for diverse AI projects, following project guidelines to deliver accurate results within deadlines. Continued upskilling to improve efficiency and meet client requirements.
Water Quality Assurance Officer
Murang’a South Water and Sanitation Company Limited
Mar 2025 - Dec 2025 (9 months)
Monitored water supply systems to ensure water quality standards were met. Supported compliance through ongoing oversight and quality assurance reporting.
Site Supervisor
Kenya National Highway Authority
Oct 2024 - Feb 2025 (4 months)
Supervised construction activities to ensure compliance with safety and engineering standards. Conducted ongoing checks to support proper site execution against required guidelines.
Education
Degrees, certifications, and relevant coursework
Strathmore University
Bachelor of Civil Engineering, Civil Engineering
2025 - 2028
Bachelor of Civil Engineering program at Strathmore University from September 2025 to March 2028.
Mukurweini Technical Training Institute
Diploma in Water Technology (Supply Option), Water Technology
2022 - 2025
Diploma in Water Technology (supply option) at Mukurweini Technical Training Institute from September 2022 to March 2025.
Christ The King Kirwara High School
Kenya Certificate of Secondary Education (KCSE), Secondary Education
2018 - 2022
Grade: C (plain)
Kenya Certificate of Secondary Education (KCSE) at Christ The King Kirwara High School from January 2018 to March 2022, graduating with a C (plain).
Nairobi Institute of Business Studied (NIBS)
Computer Studies, Computer Studies
2019 - 2020
Computer Studies at Nairobi Institute of Business Studied (NIBS) from March 2019 to March 2020, covering Microsoft Office, data entry and management, and basic graphic design.
Mukurweini Technical Training Institute
Plumbing (Level 3), Plumbing
2024 -
Practical training in Plumbing (Level 3) at Mukurweini Technical Training Institute from January 2024 to November 2024, with certification as a professional plumber.
Tech stack
Software and tools used professionally
Availability
Location
KenyaAuthorized to work in
Job categories
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