Lucky Wambua

Key Skills

Software

Labelbox

Appen

Top Subject Matter

No subject matter listed

Top Data Types

Image

Text

Top Label Types

Classification

Evaluation Rating

Freelancer Overview

I am a detail-oriented and analytical professional with over five years of experience in data annotation and AI training data preparation. My work spans across text, image, and audio labeling, supporting the development of machine learning and AI models for diverse applications. I am proficient with industry-standard annotation tools such as Labelbox and ScaleAI, and I have a solid understanding of machine learning concepts from both hands-on experience and academic training. My background includes roles with Oscar Associates (UK) Limited, Akademos, and Appen, where I contributed to end-to-end data annotation, quality checks, and AI model training. I am committed to delivering high-quality, accurate datasets that drive successful AI outcomes. I believe to produce the best

Labeling Experience

AI engineer - Data Annotation

LabelboxImageClassification

As an AI engineer at Oscar Associates (UK) Limited, I provided comprehensive data annotation services for AI and machine learning model development. My responsibilities included preparing and labeling image, text, and audio datasets to support a variety of supervised learning applications. I ensured the accuracy and quality of labeled datasets using tools like Labelbox and Scale AI. • Used annotation tools for both image and text labeling tasks. • Led quality control and dataset validation processes. • Coordinated with engineers to tailor datasets for specific AI model requirements. • Supported multi-modal data annotation projects.

As an AI engineer at Oscar Associates (UK) Limited, I provided comprehensive data annotation services for AI and machine learning model development. My responsibilities included preparing and labeling image, text, and audio datasets to support a variety of supervised learning applications. I ensured the accuracy and quality of labeled datasets using tools like Labelbox and Scale AI. • Used annotation tools for both image and text labeling tasks. • Led quality control and dataset validation processes. • Coordinated with engineers to tailor datasets for specific AI model requirements. • Supported multi-modal data annotation projects.

2025

Freelance/Volunteer Data Quality Reviewer

AppenTextEvaluation Rating

During freelance and volunteer work at Appen, I assisted in evaluating and checking the quality of annotated dataset outputs. Tasks included reviewing textual data for labeling accuracy and consistency in accordance with project guidelines. I applied established quality assurance protocols to ensure meeting the required data standards. • Performed detailed quality checks on labeled text data. • Collaborated remotely with global annotation teams. • Utilized review tools provided by Appen for dataset validation. • Provided feedback on annotation discrepancies to improve outcomes.

During freelance and volunteer work at Appen, I assisted in evaluating and checking the quality of annotated dataset outputs. Tasks included reviewing textual data for labeling accuracy and consistency in accordance with project guidelines. I applied established quality assurance protocols to ensure meeting the required data standards. • Performed detailed quality checks on labeled text data. • Collaborated remotely with global annotation teams. • Utilized review tools provided by Appen for dataset validation. • Provided feedback on annotation discrepancies to improve outcomes.

2020 - 2024

Data Annotation Specialist

AppenTextClassification

As a data annotation specialist at Akademos, I contributed to the training of AI models through meticulous annotation of text datasets. My work involved classifying and labeling large volumes of textual data to enhance NLP applications. I followed detailed guidelines to maintain consistency and labeling standards across projects. • Supported the creation of high-quality training data for NLP tasks. • Ensured adherence to project-specific annotation criteria. • Collaborated with team leads to improve labeling workflows. • Participated in regular data quality audits.

As a data annotation specialist at Akademos, I contributed to the training of AI models through meticulous annotation of text datasets. My work involved classifying and labeling large volumes of textual data to enhance NLP applications. I followed detailed guidelines to maintain consistency and labeling standards across projects. • Supported the creation of high-quality training data for NLP tasks. • Ensured adherence to project-specific annotation criteria. • Collaborated with team leads to improve labeling workflows. • Participated in regular data quality audits.

2016 - 2020

Education

Work History