Open to opportunities

STEPHEN BOGONKO

@stephenbogonko

Message

AI data specialist delivering high-accuracy annotations and rigorous quality evaluation.

Kenya

Message

What I'm looking for

I seek remote, contract or freelance roles where I can apply precise annotation and QA skills, work 10+ hours/week, and receive fair compensation while contributing to high-quality AI datasets.

I am a results-driven AI Data Specialist with hands-on experience annotating and evaluating text, image, audio, and video datasets to support machine learning pipelines. I consistently meet productivity targets while maintaining very high accuracy and strict adherence to project guidelines.

My freelance and contract work with providers like TELUS International, Appen, and Remotasks involved pairwise comparisons, relevance judgments, object tagging, classification, and content review that improved dataset integrity and model performance. I adapt quickly to evolving instructions and work effectively in remote environments.

I hold a Bachelor of Medicine and Surgery and additional certifications in digital marketing, e-commerce, and machine learning with AWS. I am immediately available for 10+ hours per week and bring disciplined remote-work practices and a reliable technical setup to every project.

Experience

Work history, roles, and key accomplishments

Current

AI Data Specialist

Current

Telus International AI Data Solutions

Jan 2023 - Present (3 years 1 month)

Delivered high-quality annotations and pairwise evaluations for diverse text, image, audio, and video datasets, consistently meeting productivity targets and maintaining 98%+ accuracy to improve model performance.

Data Annotation Data Evaluation Quality Assurance Pairwise Comparisons Classification Content Review

AI Data Specialist

Appen

Jan 2022 - Dec 2023 (1 year 11 months)

Annotated text and multimedia content for large-scale AI projects, identified and corrected dataset errors to improve data integrity, and maintained high attention to detail to support client requirements.

Annotating Data Integrity Quality Control Remote Work

Data Review & Annotation Contributor

Remotasks

Jan 2021 - Dec 2022 (1 year 11 months)

Tagged and labeled images and short video clips for computer vision datasets, completing classification tasks with accuracy and adapting to evolving instructions to support model improvements.

Classification Computer Vision Accuracy Productivity