Open to opportunities

Samuel Karanja

@samuelkaranja3

Detail-oriented STEM professional specializing in AI data annotation, statistical computing, and data quality assurance.

Kenya

Message

What I'm looking for

I am seeking roles that leverage my AI data annotation and statistical skills, offering opportunities for accuracy-driven work, collaboration with data teams, and professional growth in AI/data quality.

I am a mathematics graduate with practical experience annotating and curating high-quality datasets for machine learning, backed by strong statistical computing and programming skills. I have worked on image, video, text, and audio annotation projects, applying rigorous quality-control processes and collaborating with data scientists to meet tight deadlines and accuracy benchmarks.

I combine formal training in AI fundamentals, digital literacy, and virtual assistance with hands-on roles in census data collection and aviation licensing support, demonstrating strong attention to detail, time management, and commitment to structured, reproducible data workflows. I am passionate about contributing to AI advancements through precise data development and continuous process improvement.

Experience

Work history, roles, and key accomplishments

AI Data Annotator

Samasource Kenya

Nov 2020 - Jun 2025 (4 years 7 months)

Labeled and annotated large image, video, text, and audio datasets using bounding boxes, segmentation, classification and tagging, and conducted quality checks that improved dataset consistency and reliability. Managed multiple annotation projects, documented processes, and collaborated with data scientists to meet accuracy and delivery benchmarks.

Data Annotation Quality Control Audio Transcription Samahub Python Data Curation Attention To Detail

Census Enumerator

Kenya National Bureau of Statistics

Aug 2019 - Aug 2019 (0 months)

Conducted structured household interviews and collected demographic data, ensuring accuracy and timely submission while addressing survey inquiries and challenges in the field.

Survey Interviewing Data Validation Microsoft Excel Time Management Fieldwork Data Entry

Licensing Intern

Kenya Civil Aviation Authority

Aug 2018 - Oct 2018 (2 months)

Prepared and processed pilot licenses and aviation certifications, maintained digital databases and document filing, and assisted in license dispatching and quality assurance tasks.

Database Management Quality Assurance Administrative Support Data Entry Microsoft Office

Education

Degrees, certifications, and relevant coursework

Masinde Muliro University of Science and Technology

Bachelor of Science, Mathematics

2014 - 2018

Activities and societies: Statistical computing (Matlab, R, Stata, SPSS); programming (C, C++, Python); mathematical modelling; calculus.

Completed a Bachelor of Science in Mathematics with coursework and skills in statistical computing, programming, mathematical modelling, and calculus.