Rejoice O.

Key Skills

Software

Don't disclose

Label Studio

Argilla

Other

Top Subject Matter

LLM output evaluation

algorithmic reasoning

and numerical simulation validation

Top Data Types

Text

Top Task Types

RLHF

Fine-tuning

Polygon

Classification

Object Detection

Text Generation

Question Answering

Transcription

Evaluation/Rating

Data Collection

Computer Programming/Coding

Prompt + Response Writing (SFT)

Text Summarization

Red Teaming

Segmentation

Entity (NER) Classification

Freelancer Overview

AI Data Trainer & Technical Annotator (Remote) — Brings 4+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Label Studio, Argilla, and Other. Education includes Bachelor of Science, Computer Science (2020), and AI Prompt Engineering for Developers Certification, Python Programming (2020). AI-training focus includes data types such as Text, Computer Code, and Programming, and labeling workflows including Evaluation, Rating, and Computer Programming.

Labeling Experience

AI Data Trainer & Technical Annotator (Remote) — AMME Company

Label StudioText

Provided structured data labeling workflows for complex multimodal datasets, including text classification, entity extraction, and multi-turn dialogue scoring using dedicated annotation tools. Audited AI-generated code and structured outputs for syntax correctness, logical gaps, and edge-case constraints, documenting failure patterns for model improvement. Applied multi-step scoring criteria to evaluate and rank LLM reasoning chains and reduce downstream reasoning/code-generation errors. • Labeled and scored entities and multi-turn dialogue data for evaluation datasets • Reviewed Python/SQL/C outputs for logical correctness and constraint adherence • Cleaned datasets and reduced label noise using automated Python tooling • Managed high-volume bulk annotation runs to maintain labeling reliability

2022 - Present

Computer Science Specialist & Data Quality Analyst (Remote) — BHTechnology Transfer Ltd.

Other

Automated Python-based data pipelines to reduce manual processing time and support scalable data preparation for analytics and downstream AI workflows. Migrated and optimized legacy databases and SQL queries for large-scale reporting. Audited internal software performance and computational complexity to improve data processing efficiency. • Built automation scripts to support repeatable data processing workflows • Optimized SQL queries for large-scale reporting data • Performed code audits focused on performance and complexity • Supported data quality through improved pipeline reliability

2020 - 2022

Technical Operations & Workflow Analyst — GAP LLC

OtherText

Analyzed multi-step operational workflows to identify and remove bottlenecks that could affect reliability of multi-step processing systems. Produced technical documentation including logic flowcharts and process guidelines to standardize execution. Supported workflow tuning by mapping steps and identifying failure points. • Conducted workflow analysis to reduce operational bottlenecks • Documented logic flowcharts and process guidelines • Standardized multi-step workflow execution for consistency • Improved process clarity for downstream teams

2019 - 2020

Education

Work History