Martin D.

Key Skills

Software

Other

Appen

Data Annotation Tech

Mercor

Remotasks

Telus

Top Subject Matter

Speech recognition and transcription data for Swahili/English

Machine learning dataset cleaning and preparation

Top Data Types

Audio

Text

Image

Top Task Types

Transcription

Classification

Object Detection

Question Answering

Text Summarization

Evaluation/Rating

Computer Programming/Coding

Freelancer Overview

Freelance Data & AI Tasks (Self-Driven Projects) — transcription and text correction work. Brings 4+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Other. Education includes Bachelor of Science, University of Nairobi (2020) and Certificate in Software Engineering, Moringa School (2023). AI-training focus includes data types such as Audio and Text and labeling workflows including Transcription, Evaluation, and Rating.

Labeling Experience

Freelance Data & AI Tasks (Self-Driven Projects) — dataset review & cleaning

OtherText

Reviewed and cleaned structured and unstructured datasets used for machine learning tasks. Ensured high data quality through inspection and validation of dataset contents before they were used for AI training. Applied basic data analysis practices to support dataset readiness and reduce labeling noise.• Conducted dataset review to identify missing, incorrect, or inconsistent entries.• Cleaned and normalized textual data for ML training workflows.• Used Python-based processing for handling structured/unstructured data.• Supported quality improvements for text-based AI projects.

2023 - Present

Freelance Data & AI Tasks (Self-Driven Projects) — transcription and text correction work

OtherAudioTranscription

Reviewed and corrected audio transcription outputs to improve accuracy for AI-related transcription tasks. Worked on listening, language processing, and text correction to ensure the resulting transcripts aligned with the intended speech content. Focused on consistent quality checks to support machine learning and speech recognition improvements.• Reviewed transcription results for errors and inconsistencies.• Performed text correction and accuracy validation on transcribed content.• Cleaned and prepared transcription/text data for downstream ML use.• Conducted iterative refinement of small text-processing AI projects.

2023 - Present

Education

Work History