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Ezinwa Amadi

Ezinwa Amadi

AI Trainer & Conversation Designer

NIGERIA flag
Remote, Nigeria
$20.00/hrIntermediateOther

Key Skills

Software

Other

Top Subject Matter

Conversational AI/NLU
Conversational AI/Knowledge Management
Voice AI/Educational Technology

Top Data Types

TextText
AudioAudio

Top Task Types

Text Generation
Question Answering
Text Summarization
RLHF
Fine Tuning
Evaluation Rating

Freelancer Overview

Certified AI Trainer with 5 years of end-to-end experience building, optimizing, and leading conversational AI systems at scale. I specialize in NLU architecture, knowledge system design, and cross-functional AI product delivery. I have driven measurable impact across platforms serving 90M+ users, improving chatbot accuracy by 20%, achieving 85% containment, and earning recognition as Chatbot MVP. I bring both the strategic lens to shape how AI systems should behave and the hands-on expertise to make it happen.

IntermediateEnglish

Labeling Experience

AI Knowledge & Conversation Design Consultant, ChattyEzy

OtherText
Architected and managed knowledge bases optimized for retrieval-augmented generation in conversational AI projects. Conducted content audits and gap analyses to identify labeling errors and outdated information. Improved structure and retrievability of labeled data for downstream AI consumption. • Performed dataset evaluations and labeling audits for quality assurance • Designed workflows enhancing training data for LLMs • Enhanced client deliverables with targeted, high-accuracy annotation strategies • Supported prompt engineering processes with high-quality labeled text data

Architected and managed knowledge bases optimized for retrieval-augmented generation in conversational AI projects. Conducted content audits and gap analyses to identify labeling errors and outdated information. Improved structure and retrievability of labeled data for downstream AI consumption. • Performed dataset evaluations and labeling audits for quality assurance • Designed workflows enhancing training data for LLMs • Enhanced client deliverables with targeted, high-accuracy annotation strategies • Supported prompt engineering processes with high-quality labeled text data

2024 - Present

Conversation Designer, Vennote Technologies

OtherText
Led structured NLU optimization and data improvement tasks for conversational AI systems. Utilized benchmarking criteria to enhance chatbot accuracy and conduct intent restructuring cycles. Analyzed user interaction data to surface failure patterns for continual refinement. • End-to-end management of training data workflows, from creation to deployment • Applied systematic rubrics for prompt engineering and intent classification • Collaborated cross-functionally with product and NLU engineering teams • Iteratively improved chatbot performance as measured by user outcomes

Led structured NLU optimization and data improvement tasks for conversational AI systems. Utilized benchmarking criteria to enhance chatbot accuracy and conduct intent restructuring cycles. Analyzed user interaction data to surface failure patterns for continual refinement. • End-to-end management of training data workflows, from creation to deployment • Applied systematic rubrics for prompt engineering and intent classification • Collaborated cross-functionally with product and NLU engineering teams • Iteratively improved chatbot performance as measured by user outcomes

2023 - Present

Conversation Designer & Voiceflow Developer, Freedom Speaks AI

OtherAudio
Developed and iteratively tested Alexa educational skill with a focus on output evaluation and speech recognition error analysis. Evaluated speech-to-text output and assessed response quality to achieve high recognition accuracy. Conducted cross-validation of conversational flows for user engagement. • Labeled and evaluated audio interactions for intent recognition • Improved system through systematic output annotation and error tracking • Provided detailed feedback for training conversational responses • Contributed to training datasets supporting voice-based learning

Developed and iteratively tested Alexa educational skill with a focus on output evaluation and speech recognition error analysis. Evaluated speech-to-text output and assessed response quality to achieve high recognition accuracy. Conducted cross-validation of conversational flows for user engagement. • Labeled and evaluated audio interactions for intent recognition • Improved system through systematic output annotation and error tracking • Provided detailed feedback for training conversational responses • Contributed to training datasets supporting voice-based learning

2022 - 2023

Conversation Design Intern, Freshriver.ai

OtherText
Supported chatbot flow design and response annotation based on analysis of user interaction text. Refined output through systematic evaluation and iteration cycles. Contributed to team audits and training data improvements for greater response quality. • Assisted in labeling and tagging conversational elements • Engaged in quality assurance of annotated datasets • Supported NLU training efforts with structured feedback • Collaborated on improving LLM evaluation methods for chatbots

Supported chatbot flow design and response annotation based on analysis of user interaction text. Refined output through systematic evaluation and iteration cycles. Contributed to team audits and training data improvements for greater response quality. • Assisted in labeling and tagging conversational elements • Engaged in quality assurance of annotated datasets • Supported NLU training efforts with structured feedback • Collaborated on improving LLM evaluation methods for chatbots

2021 - 2022

Education

F

Federal University of Technology, Owerri

Bachelor of Technology, Science Laboratory Technology

Bachelor of Technology
2021 - 2021

Work History

C

ChattyEzy

AI Knowledge & Conversation Design Consultant

Remote
2024 - Present
V

Vennote Technologies

Conversation Designer

Remote
2023 - Present