Queen Orji-Kalu

Key Skills

Software

Lionbridge

Appen

Top Subject Matter

NLP and Robotics AI

Speech and Language AI

Conversational AI and Search

Top Data Types

Text

Audio

Document

Top Task Types

Classification

Transcription

RLHF

Freelancer Overview

Linguistic Data Specialist (AI Training & NLP). Brings 1+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Lionbridge, Lighthouse, and Appen. Education includes Bachelor of Science, N/A (2025). AI-training focus includes data types such as Text and Audio and labeling workflows including Classification, Transcription, and RLHF.

Labeling Experience

Linguistic Data Specialist (AI Training & NLP)

LionbridgeTextClassification

In this role, I annotated, reviewed, and validated textual datasets for NLP and robotics-based AI systems. My tasks included intent classification, text labeling, and transcription using strict guidelines to ensure consistency and accuracy. I contributed directly to datasets used for machine learning model optimization through quality feedback. • Annotated and validated diverse text datasets for AI integration. • Conducted intent classification and structured transcription for NLP models. • Applied annotation standards to maintain dataset reliability. • Identified inconsistencies and improved labeling quality through feedback mechanisms.

In this role, I annotated, reviewed, and validated textual datasets for NLP and robotics-based AI systems. My tasks included intent classification, text labeling, and transcription using strict guidelines to ensure consistency and accuracy. I contributed directly to datasets used for machine learning model optimization through quality feedback. • Annotated and validated diverse text datasets for AI integration. • Conducted intent classification and structured transcription for NLP models. • Applied annotation standards to maintain dataset reliability. • Identified inconsistencies and improved labeling quality through feedback mechanisms.

2025 - Present

Linguistic Data Annotator & Transcriptionist

AudioTranscription

In this position, I delivered accurate transcription and bilingual translation tasks while labeling and categorizing audio datasets. The work supported supervised machine learning model development with a focus on high quality. I maintained performance metrics within strict thresholds and utilized structured annotation tools. • Transcribed and translated English–Igbo audio data for AI tasks. • Labeled and categorized audio for machine learning pipelines. • Used annotation software to structure and track progress. • Ensured output quality met established accuracy criteria.

In this position, I delivered accurate transcription and bilingual translation tasks while labeling and categorizing audio datasets. The work supported supervised machine learning model development with a focus on high quality. I maintained performance metrics within strict thresholds and utilized structured annotation tools. • Transcribed and translated English–Igbo audio data for AI tasks. • Labeled and categorized audio for machine learning pipelines. • Used annotation software to structure and track progress. • Ensured output quality met established accuracy criteria.

2025 - 2025

AI Data Contributor (Evaluation & Annotation)

AppenTextRLHF

As an AI Data Contributor, I evaluated AI-generated responses focusing on quality, relevance, and accuracy (RLHF). I annotated datasets to improve conversational AI and search-based algorithms for multiple projects. This involved adhering to complex guidelines and consistently delivering high-quality ratings. • Rated and labeled AI conversations for training and improvement. • Annotated large volumes of conversational text data. • Maintained guideline compliance and high consistency scores. • Supported the development of advanced AI training pipelines.

As an AI Data Contributor, I evaluated AI-generated responses focusing on quality, relevance, and accuracy (RLHF). I annotated datasets to improve conversational AI and search-based algorithms for multiple projects. This involved adhering to complex guidelines and consistently delivering high-quality ratings. • Rated and labeled AI conversations for training and improvement. • Annotated large volumes of conversational text data. • Maintained guideline compliance and high consistency scores. • Supported the development of advanced AI training pipelines.

2024 - 2025

Education

Work History