Chinyere C.

Key Skills

Software

Other

Appen

Top Subject Matter

AI Language Models

Model Safety

Pedagogy Domain Expertise

Top Data Types

Text

Image

Audio

Document

Top Task Types

RLHF

Segmentation

Transcription

Text Generation

Freelancer Overview

Freelance AI Content & Code Evaluator. Brings 8+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Other and Appen. Education includes Bachelor of Science, Robert Gordon University (2024) and Higher National Diploma, Federal Polytechnic, Nekede (2011). AI-training focus includes data types such as Text, Image, and Audio and labeling workflows including RLHF, Segmentation, and Transcription.

Labeling Experience

Freelance AI Content & Code Evaluator

OtherTextRLHF

This role focuses on improving advanced large language models through content creation, code evaluation, and adversarial prompting. Responsible for designing creative and technical prompts to fine-tune AI understanding of nuance, accuracy, and safe output. Tasks included fact-checking AI outputs and rewriting code explanations for clarity and pedagogical soundness. • Authored 500+ high-complexity creative writing prompts for LLM training. • Reviewed and corrected Python/SQL code snippets and explanations. • Designed adversarial prompts ("jailbreaks") to test model safety filters. • Verified AI-generated content for factual and stylistic integrity.

2024 - Present

Data Evaluation Specialist (Freelance)

OtherAudioTranscription

Transcribed multi-speaker audio files containing background noise, supporting the creation of labeled datasets for speech technology. Maintained high accuracy and consistency in annotation under challenging audio scenarios. Helped prepare data for model refinement in voice recognition projects. • Delivered time-stamped transcripts for multi-voice recordings. • Managed large audio file volumes efficiently. • Improved transcript consistency across datasets. • Assisted with quality control for labeled audio data.

2023 - 2023

Data Evaluation Specialist (Freelance)

OtherImageSegmentation

Labeled automotive images using semantic segmentation to support autonomous vehicle machine learning models. Tasked with identifying and distinguishing features such as pedestrians, vehicles, and infrastructure within the dataset. Collaborated with remote team members to maintain high annotation accuracy. • Executed precise image segmentation for object recognition tasks. • Provided input on workflow improvements in distributed settings. • Quality checked annotations to support model training. • Ensured project timelines were met for data handoff.

2023 - 2023

Data Evaluation Specialist (Freelance)

OtherTextText Generation

Reviewed and edited AI-generated content for historical and scientific accuracy. Performed fact-checking on model outputs, ensuring compliance with gold standard verification standards. Supported iterative improvement cycles for LLM prompt-output systems. • Evaluated AI responses for factual correctness and reliability. • Ensured outputs adhered to editorial and style guidelines. • Participated in prompt tuning and feedback routines. • Drove improvement in model helpfulness, honesty, and harmlessness.

2023 - 2023

Data Evaluation Specialist (Freelance)

AppenAudioTranscription

Transcribed multi-speaker audio files with significant background noise for dataset preparation. Achieved high transcription accuracy by maintaining a Word Error Rate of less than 4%. Supported training of speech recognition and diarization models in challenging audio conditions. • Accurately transcribed diverse accents under noisy conditions. • Delivered verbatim and diarized transcriptions for speech datasets. • Contributed to quality assurance processes for audio labeling. • Enhanced audio dataset quality for machine learning applications.

2023 - 2023

Show more

Education

Work History