Joshua J.

Key Skills

Freelancer Overview

JOSHUA ELEOJO JEREMIAH Lagos, Nigeria | [email protected] | +2348070905305 PROFESSIONAL SUMMARY Highly analytical Computer Science professional and Senior AI Data Trainer with over two years of extensive, hands-on experience in high-fidelity data annotation, adversarial prompt engineering, and Large Language Model (LLM) alignment. Proven track record of leveraging advanced annotation platforms— including Atlas Capture and Outlier—to evaluate complex model outputs, build granular error taxonomies, and optimize RLHF (Reinforcement Learning from Human Feedback) workflows. Exceptional attention to detail with a demonstrated ability to perform documents data extraction, audio transcription, and domain- specific code/logic reviews with zero-error tolerance. KEY CORE COMPETENCIES AI & Data Annotation: RLHF Evaluation, Adversarial Prompt Engineering, Semantic & Intent Analysis, Red- Teaming, Audio Transcription, and Documents Data Extraction. Computer & Technical Skills: Computer Science theory, Computer-Aided Data Analysis, Python, JavaScript, Docker, and Computer Systems Maintenance. Platform Expertise: Atlas Capture, Outlier AI, MercorAI. Analytical Skills: Multi-Step Logic Verification, Complex Guideline Execution, Technical Data Review, and Quality Assurance. PROFESSIONAL EXPERIENCE AI Trainer / Data Annotation Specialist Atlas Capture (Remote) | December 2024 – Present • Executed large-scale text, domain-specific logic, and language annotation tasks, consistently maintain

Labeling Experience

AI Trainer / Data Annotation Specialist

VideoData Collection

Executed large-scale text, domain-specific logic, and language annotation tasks, consistently maintaining a 95%+ quality compliance rating. Managed complex documents data extraction workflows to transform unstructured information into highquality training datasets. Performed deep semantic alignment assessments to ensure localized AI outputs retained the precise intent and nuance of original source prompts. Collaborated asynchronously within an elite global network of data specialists to preserve high data density and dataset cleanliness. Utilized computer-based auditing tools to verify the accuracy of multi-layered data labels.

2025 - Present

Senior AI Trainer / Language & Data Reviewer

AudioText Generation

Evaluated and optimized LLM conversational data by applying high-level linguistic and logical frameworks to ensure structural accuracy and safety. Led audio transcription and labeling projects, converting complex verbal data into formatted text for model training. Maintained exceptional quality scores across multi-layered grading rubrics, systematically identifying and mitigating edge-case errors in model reasoning. Analyzed complex textual and structured data to weed out factual inaccuracies and alignment errors.

2024 - 2025

Data Support Assistant

DocumentTranscription

Provided comprehensive data support and managed institutional databases with high attention to detail. Ensured the integrity of digital records through rigorous verification and computer system updates.

2020 - 2023