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M

Miracle Onyema

AI Training Specialist - Mechanical Engineering & Technical Data Annotation

Nigeria flagPort Harcourt, Nigeria
$10.00/hrIntermediateAppenImeritRemotasks

Key Skills

Software

AppenAppen
iMeritiMerit
RemotasksRemotasks
Other

Top Subject Matter

Mechanical Engineering – Industrial Diagnostics and Predictive Maintenance
Natural Language Processing – LLM Safety and Content Moderation
Autonomous Systems – Computer Vision and Action Recognition

Top Data Types

ImageImage
VideoVideo
TextText

Top Task Types

ClassificationClassification
Object DetectionObject Detection
Text GenerationText Generation
Question AnsweringQuestion Answering
Text SummarizationText Summarization
Fine-tuningFine-tuning

Freelancer Overview

ICT Operations Officer. Brings 6+ years of professional experience across complex professional workflows, research, and quality-focused execution. Education includes Bachelor of Technology (Degree in View), Rivers State University (2022) and West African Senior School Certificate, Evangel Seminary (2016). I have also completed an AI Optimization Program from Alx Africa where I was properly trained on LLM fundamentals, prompt engineering, data labeling best practices, AI model evaluations and ethical AI practices.

IntermediateEnglishIgbo

Labeling Experience

Video Event Categorization

VideoSegmentation
Annotated video sequences to identify and timestamp specific actions, supporting the training of temporal action recognition models. Tasks included frame-by-frame verification and precise action-start/end-point identification

Annotated video sequences to identify and timestamp specific actions, supporting the training of temporal action recognition models. Tasks included frame-by-frame verification and precise action-start/end-point identification

2025 - 2025

Image Classification

ImageClassification
Classified technical images and verified metadata accuracy to support supervised learning models. Utilized critical thinking and diagnostic skills to ensure high-precision identification of specific objects within complex datasets.

Classified technical images and verified metadata accuracy to support supervised learning models. Utilized critical thinking and diagnostic skills to ensure high-precision identification of specific objects within complex datasets.

2025 - 2025

LLM Fine-Tuning for Sentiment & Intent Analysis

TextFine Tuning
I annotated high-volume text datasets for intent classification and emotional tone to enhance Large Language Model (LLM) response nuance. I applied rigorous labeling guidelines to distinguish between formal, informal, and toxic user prompts

I annotated high-volume text datasets for intent classification and emotional tone to enhance Large Language Model (LLM) response nuance. I applied rigorous labeling guidelines to distinguish between formal, informal, and toxic user prompts

2024 - 2025

Education

A

ALX Africa

Certificate of Completion , AI Optimization Programme

Certificate of Completion
2024 - 2024
E

Evangel Seminary

West African Senior School Certificate, General Education

West African Senior School Certificate
2010 - 2016

Work History

J

Joshua ICT Center

ICT Operations Officer

Port Harcourt
2019 - 2022
H

Holy Trinity Nursery and Primary School

School Tutor

Port Harcourt
2017 - 2019