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Brian Njeri

Data Annotator and Reviewer

Kenya flagNairobi, Kenya
IntermediateMercor

Key Skills

Software

MercorMercor

Top Subject Matter

Autonomous Vehicles / Systems
AI Model Training / Computer Vision

Top Data Types

VideoVideo
ImageImage

Top Task Types

Object Detection
Classification

Freelancer Overview

Data Annotator and Reviewer. Core strengths include N, A, and Mercor. Education includes Bachelor of Science, Murang'a University of Technology (2024) and Certificate of Secondary Education, Thika High School (2023). AI-training focus includes data types such as Video and Image and labeling workflows including Object Detection and Classification.

Intermediate

Labeling Experience

Mercor

Data Annotator & AI Trainer

MercorImageClassification
Worked as a data annotator and AI trainer responsible for accurate image and video annotation. Collaborated on the creation of high-quality datasets for AI model development. Delivered consistently labeled data under strict deadlines and rigorous quality standards. • Annotated images with relevant classifications and tags • Contributed to AI model accuracy through precise labeling • Demonstrated reliability in remote team collaborations • Adhered to industry benchmarks for annotation quality

Worked as a data annotator and AI trainer responsible for accurate image and video annotation. Collaborated on the creation of high-quality datasets for AI model development. Delivered consistently labeled data under strict deadlines and rigorous quality standards. • Annotated images with relevant classifications and tags • Contributed to AI model accuracy through precise labeling • Demonstrated reliability in remote team collaborations • Adhered to industry benchmarks for annotation quality

2025 - 2026

Data Annotator and Reviewer

VideoObject Detection
Served as a data annotator and reviewer focusing on high-precision video labeling for autonomous system training. Promoted to a reviewer role due to exceptional accuracy and reliability. Ensured quality and integrity of labeled datasets by conducting audits and providing feedback. • Labeled complex video segments to train machine learning models • Reviewed and audited peer annotations for consistency • Maintained rigorous standards for dataset integrity • Supported the development of autonomous system solutions

Served as a data annotator and reviewer focusing on high-precision video labeling for autonomous system training. Promoted to a reviewer role due to exceptional accuracy and reliability. Ensured quality and integrity of labeled datasets by conducting audits and providing feedback. • Labeled complex video segments to train machine learning models • Reviewed and audited peer annotations for consistency • Maintained rigorous standards for dataset integrity • Supported the development of autonomous system solutions

2025 - 2026

Education

T

Thika High School

Certificate of Secondary Education, General Secondary Education

Certificate of Secondary Education
2020 - 2023
M

Murang'a University of Technology

Bachelor of Science, Software Engineering

Bachelor of Science
2024

Work History

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