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Lewis Wanyama

Lewis Wanyama

Data Collection and Quality Assurance Officer - Social Services

KENYA flag
Nairobi, Kenya
$20.00/hrExpertAppenClickworkerCloudfactory

Key Skills

Software

AppenAppen
ClickworkerClickworker
CloudFactoryCloudFactory
CrowdSourceCrowdSource
Data Annotation TechData Annotation Tech
Google Cloud Vertex AIGoogle Cloud Vertex AI
ProdigyProdigy

Top Subject Matter

No subject matter listed

Top Data Types

3D Sensor
AudioAudio
Computer Code ProgrammingComputer Code Programming
Geospatial Tiled ImageryGeospatial Tiled Imagery
ImageImage
TextText
VideoVideo

Top Label Types

Emotion Recognition
Entity Ner Classification
Evaluation Rating
Fine Tuning
Function Calling
Geocoding
Mapping
Object Detection
Segmentation

Freelancer Overview

I am a seasoned Data Annotation Specialist with extensive experience in preparing high-quality training data for machine learning and artificial intelligence applications. I bring expertise in multiple annotation methodologies across diverse data types including image, text, audio, and video labeling, consistently delivering accurate and reliable datasets that power robust AI systems.

ExpertEnglish

Labeling Experience

Data Annotation Tech

Ai training data annotator

Data Annotation TechImageSegmentation
I have experience with image annotation for e-commerce product catalogs. In this project, I labeled over 5,000 product images by drawing bounding boxes around items, tagging product categories (clothing, electronics, home goods), and identifying key attributes like color, brand, and condition. I used Labelbox to ensure accurate annotations that helped train object detection models for automated product categorization. I maintained a 97% quality score throughout the project.

I have experience with image annotation for e-commerce product catalogs. In this project, I labeled over 5,000 product images by drawing bounding boxes around items, tagging product categories (clothing, electronics, home goods), and identifying key attributes like color, brand, and condition. I used Labelbox to ensure accurate annotations that helped train object detection models for automated product categorization. I maintained a 97% quality score throughout the project.

2023 - 2025
Prodigy

Name Entry Recognition Specialist

ProdigyTextEntity Ner Classification
Identified and tagged entities like names, locations, organizations, and dates in text documents to train NLP models for information extraction.

Identified and tagged entities like names, locations, organizations, and dates in text documents to train NLP models for information extraction.

2019 - 2022

Education

O

Open university of Kenya

Post graduate diploma in Artificial Intelligence , Artificial intelligence and generative AI

Post graduate diploma in Artificial Intelligence
2023 - 2025
J

Jomo Kenyatta University of Agriculture and Technology

Bachelor of Science, Public Administration and Leadership

Bachelor of Science
2018 - 2024

Work History

T

TransPerfect

Data Annotation Specialist (DataForce)

Nairobi
2023 - 2025
C

CPHRM Group

Field Data Collection and Quality Assurance Officer

Bungoma
2024 - 2024