Alex Kathurima M.

Key Skills

Software

Appen

CVAT

LabelImg

Mercor

Mindrift

Remotasks

CrowdSource

Top Subject Matter

Language data annotation for AI training (multilingual conversational text)

AI content review and dataset quality assurance for text generation tasks

Structured dataset preparation for analysis and AI data preparation

Top Data Types

Text

Audio

Image

Top Task Types

Data Collection

Transcription

Object Detection

Freelancer Overview

Freelance Data Annotator – Language Task (CrowdGen by Appen). Brings 2+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Appen, N, and A. Education includes Bachelor of Arts, University of Nairobi (2023) and Master of Arts, Aga Khan University (2026). AI-training focus includes data types such as Text and Audio and labeling workflows including Evaluation, Rating, and Data Collection.

Labeling Experience

Transcription & Data Entry Specialist (Freelance) – HANDSHAKE AI

OtherAudioTranscription

Transcribed audio recordings into accurate written documents while maintaining required formatting and timestamping standards. Handled sensitive information with confidentiality and attention to detail. Delivered high-accuracy transcription outputs under tight deadlines. • Converted audio to verbatim written text • Maintained timestamps and formatting requirements • Ensured confidentiality for sensitive content • Produced accurate transcripts within deadlines

2025 - Present

Data Collection Assistant (Project-Based Work) – MECOR AI

OtherTextData Collection

Collected and organized structured datasets for analysis to support AI-ready information. Performed online research and compiled relevant materials according to collection needs. Cleaned and formatted datasets to ensure usability for digital systems. • Compiled structured datasets via research • Cleaned, organized, and formatted data • Prepared data for digital systems and analysis • Supported dataset readiness for downstream AI work

2025 - Present

AI Content Reviewer & Quality Assurance (Freelance)

Text

Reviewed AI-generated text and associated annotations to verify accuracy, consistency, and relevance to the guidelines. Identified labeling errors in datasets and corrected them to improve downstream model performance. Flagged inappropriate or biased content and provided feedback to strengthen annotation quality. • Audited text and annotation outputs against standards • Corrected labeling errors to improve dataset quality • Flagged biased or inappropriate data for ethical training • Provided feedback to refine annotation processes

2025 - 2025

Freelance Data Annotator – Language Task (CrowdGen by Appen)

AppenText

Reviewed and labeled multilingual text data for quality, correctness, and guideline adherence. Applied task instructions to maintain consistent evaluation of short conversational and informal texts. Ensured high accuracy across repetitive annotation workflows. • Labeled multilingual text based on provided rules • Checked quality and correctness for each record • Used consistent criteria to score or categorize content • Worked on remote annotation tasks for model/data quality

2024 - 2025

Education

Work History