Odonye J.

Key Skills

Software

Label Studio

Scale AI

Prodigy

Other

Appen

Top Subject Matter

Fintech Domain Expertise

crypto sentiment

NLP for ML training

Top Data Types

Text

Image

Document

Top Task Types

Classification

RLHF

Freelancer Overview

Senior Data Annotation Specialist — TechLabel AI Solutions. Core strengths include Label Studio, Scale AI, and Prodigy. Education includes Bachelor of Science, University of Lagos (2020). AI-training focus includes data types such as Text and labeling workflows including Classification and RLHF.

Labeling Experience

Senior Data Annotation Specialist — TechLabel AI Solutions

Label StudioTextClassification

Responsible for annotating and labeling large volumes of text, image, and structured datasets to support ML model training pipelines. Led a team and ensured labeling quality through daily checks and inter-annotator agreement tracking for complex NLP tasks. Developed fintech and crypto sentiment guidelines and ontologies to reduce ambiguity errors and refine annotation schemas from model feedback loops. • Labeled 500,000+ data points per month across text and structured formats. • Achieved 97%+ inter-annotator agreement (IAA) on complex NLP tasks. • Built labeling guidelines and ontologies for fintech/crypto sentiment classification. • Partnered with ML engineers to iterate annotation schemas based on performance feedback loops.

2024 - Present

Data Labeling Analyst — Appen (Contract)

AppenTextRLHF

Performed RLHF (Reinforcement Learning from Human Feedback) tasks to support large language model fine-tuning by rating AI responses. Specialized in labeling crypto and financial news for entity recognition models, including tickers, events, sentiment, and market signals. Maintained high accuracy under strict SLAs and provided structured feedback to improve prediction-market and DeFi use-case outputs. • Rated AI responses for accuracy, safety, and helpfulness for RLHF. • Labeled crypto/financial news entities for NER including tickers, events, sentiment, and market signals. • Maintained 99% accuracy rating across 50+ projects with strict SLAs. • Supplied structured feedback that improved model outputs in prediction-market and DeFi contexts.

2022 - 2023

Freelance Annotation Consultant — Independent / Upwork

OtherTextClassification

Delivered custom text annotation, data cleaning, and classification labeling for AI startups across fintech, legal, and e-commerce. Automated annotation QA consistency checks using a Python script to reduce review time. Produced labeled datasets for chatbot training, intent classification, and dialogue act labeling projects. • Completed custom text annotation and classification labeling for multiple domains. • Built Python-based QA scripts for consistency checking and audit support. • Annotated datasets for chatbot training, intent classification, and dialogue act labeling. • Supported clients in the US, UK, and Nigeria via Upwork and independent consulting.

2021 - 2022

Education