Festus B.

Key Skills

Software

Other

Appen

Top Subject Matter

AI training and data evaluation (audio/voice)

Data quality assurance for AI/ML-ready datasets

Legal Services & Contract Review

Top Data Types

Audio

Text

Image

Document

Top Task Types

Bounding Box

Segmentation

Classification

Object Detection

Text Summarization

Fine-tuning

Question Answering

Point/Key Point

Entity (NER) Classification

Freelancer Overview

AI Trainer (Freelance, Remote). Brings 5+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Other. Education includes Bachelor of Science, University of Eldoret (2017) and N/A, World Quant University (2025). AI-training focus includes data types such as Audio and Text and labeling workflows including Evaluation and Rating.

Labeling Experience

AI Trainer (Freelance, Remote)

OtherAudio

Provided AI training support by labeling and validating audio inputs for quality and consistency. Performed assessments of AI model outputs using structured rubrics to ensure alignment with predefined standards. Contributed feedback to support model improvement and refinement for natural language and speech-based applications. • Labeled and categorized audio data with high accuracy • Evaluated transcriptions/voice recordings for quality • Applied rubrics to rate and check model responses • Provided feedback for LLM and speech model improvement

Present

Data Analyst | ICT Authority (ICTA)

OtherText

Supported AI/ML data readiness by validating and preprocessing large operational datasets before use in analytical workflows. Implemented data quality assurance scripts to ensure dataset integrity and reliability for downstream modeling and reporting. Ensured analytical results were based on accurate inputs to improve model/dashboard performance. • Wrote QA scripts for data validation and preprocessing • Ensured integrity of operational datasets • Prepared data for analytical models and dashboards • Supported reliable insights through improved data quality

2022 - 2024

Education

Work History