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Lydia Ayeni

Lydia Ayeni

Data Analyst - Healthcare Data Management

NIGERIA flag
Ikeja, Nigeria
$25.00/hrIntermediateOther

Key Skills

Software

Other

Top Subject Matter

No subject matter listed

Top Data Types

AudioAudio
DocumentDocument
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Top Label Types

Audio Recording
Classification
Data Collection
Question Answering
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Text Summarization
Transcription

Freelancer Overview

I am a data analyst with over two years of hands-on experience managing, validating, and transforming large datasets across healthcare, government, and retail domains. My background in health data management and business intelligence has equipped me with strong skills in data cleaning, annotation, and ensuring data integrity—key components for high-quality AI training data. I am proficient in Excel (including advanced formulas and VBA), Power BI, Google Sheets, and SQL, and have a proven track record of automating workflows, reducing manual errors, and streamlining data processes for both structured and unstructured information. I have worked on projects that required meticulous data collection, validation, and reporting, including health claims, demographic statistics, and retail sales, consistently improving data accuracy and operational efficiency. My ability to collaborate with cross-functional teams and attention to detail ensures that labeled and annotated data is reliable and ready for AI model training. I am passionate about supporting machine learning initiatives with high-quality datasets and am eager to contribute my analytical and data management expertise to innovative AI and data labeling projects.

IntermediateEnglishYorubaSpanish

Labeling Experience

Data Annotator

OtherTextClassificationQuestion Answering
As a Data Annotator, I contributed to AI training workflows, making logical structures to improve AI model development. My responsibilities required proficiency in data annotation and experience with AI platforms, supporting the preparation and labeling of text datasets for AI learning. I utilized my expertise in chain-of-thought documentation and data reasoning for quality annotation of complex data samples. • Ensured data integrity through accurate labeling and documentation. • Applied chain-of-thought techniques for improved AI reasoning in datasets. • Used AI platforms and Excel to support annotation and structured data input. • Collaborated in creating logical labeling schemes for enhanced AI training.

As a Data Annotator, I contributed to AI training workflows, making logical structures to improve AI model development. My responsibilities required proficiency in data annotation and experience with AI platforms, supporting the preparation and labeling of text datasets for AI learning. I utilized my expertise in chain-of-thought documentation and data reasoning for quality annotation of complex data samples. • Ensured data integrity through accurate labeling and documentation. • Applied chain-of-thought techniques for improved AI reasoning in datasets. • Used AI platforms and Excel to support annotation and structured data input. • Collaborated in creating logical labeling schemes for enhanced AI training.

2025 - 2025

Education

O

Obafemi Awolowo University

Bachelor of Science, Demography and Social Statistics

Bachelor of Science
2018 - 2023

Work History

A

AXA Mansard Health

Data Officer

Lagos State
2024 - Present
N

National Population Commission

Data Entry Specialist

Oyo State
2023 - 2024