Esther K.

Key Skills

Software

Other

Top Subject Matter

AI response evaluation and NLP dataset annotation (English & Swahili)

Linguistic labeling for NLP training (English & Swahili)

Conversational AI training data creation and safety evaluation

Top Data Types

Text

Audio

Document

Top Task Types

Fine-tuning

Prompt + Response Writing (SFT)

Freelancer Overview

Senior AI Data Trainer & Evaluator (Remote). Core strengths include Other. Education includes Bachelor’s Degree, N/A (2019). AI-training focus includes data types such as Text and labeling workflows including Evaluation, Rating, and Fine-tuning.

Labeling Experience

Senior AI Data Trainer & Evaluator (Remote)

OtherText

Evaluated and rated AI-generated responses for quality, relevance, and safety to support conversational AI training. Designed structured prompts to guide AI behavior and improve response consistency across user contexts. Conducted multilingual quality assurance checks and provided corrective feedback to refine training guidelines. • Rated responses for safety, relevance, and overall quality • Annotated and validated NLP training datasets • Identified model biases and documented remediation feedback • Performed English and Swahili multilingual QA reviews

2023 - Present

AI Linguistic Data Specialist (Remote)

OtherTextFine-tuning

Labeled and annotated large text datasets for machine learning, focusing on linguistic quality for English and Swahili. Reviewed AI outputs to ensure grammatical correctness and contextual accuracy. Participated in model fine-tuning through structured feedback cycles with model and engineering stakeholders. • Produced text annotations for ML training datasets • Applied linguistic expertise for English and Swahili data • Reviewed outputs for grammar and context alignment • Fed back findings to support iterative fine-tuning

2021 - 2023

AI Content Analyst & Prompt Trainer (Remote)

OtherTextPrompt + Response Writing (SFT)

Created conversational scenarios and training data to support AI agent development. Evaluated AI task performance and flagged unsafe outputs to improve safety and reliability. Improved AI understanding of African English expressions by incorporating context-aware examples into training datasets. • Authored conversational scenarios for training • Assessed task performance and reported unsafe outputs • Built datasets for conversational AI agents • Enhanced coverage of African English context and expressions

2019 - 2020

Education