Dennis M.

Key Skills

Software

iMerit

Mercor

Top Subject Matter

AI training for NLP

computer vision

and data quality operations

Top Data Types

Text

Image

Document

Top Task Types

Segmentation

Transcription

Evaluation/Rating

Object Detection

Freelancer Overview

AI Trainer / Data Annotator (Mercor). Core strengths include Mercor and iMerit. Education includes Degree in Information Technology, University of Nairobi (2020). AI-training focus includes data types such as Text and Image and labeling workflows including Evaluation, Rating, and Segmentation.

Labeling Experience

AI Trainer / Data Annotator (Mercor)

MercorText

Provided AI training by reviewing prompts, responses, and model outputs to improve accuracy and performance. Performed quality assurance checks to ensure compliance with project guidelines and annotation standards. Supported human-in-the-loop learning by validating outputs and improving data reliability. • Prompt evaluation and AI response rating • Output review for accuracy improvement • Quality assurance and data validation against guidelines • Human-in-the-loop output validation

2023 - Present

AI Data Annotator / Labeller (iMerit Scholars)

iMeritImageSegmentation

Labeled and annotated datasets to support machine learning and computer vision model training. Delivered image segmentation, object detection, text annotation, and categorization tasks following project guidelines. Performed error review and correction to improve dataset quality and consistency and assisted QA teams with ongoing standard adherence. • Image segmentation and object detection • Text annotation and categorization • Annotation error correction for quality improvement • QA support to reduce data inconsistencies

2023 - 2025

Education

Work History