Alex Njenga

Key Skills

Software

Scale AI

Top Subject Matter

AI/NLP Data Labeling

Image Data Annotation for Machine Learning

Audio Data Annotation/Speech Recognition

Top Data Types

Text

Image

Audio

Top Task Types

Classification

Transcription

Freelancer Overview

AI Data Labeling Specialist. Brings 2+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Scale AI. Education includes Bachelor of Science, University of Texas at Dallas. AI-training focus includes data types such as Text, Image, and Audio and labeling workflows including Classification and Transcription.

Labeling Experience

AI Data Labeling Specialist

Scale AIAudioTranscription

I annotated and transcribed audio data, supporting speech recognition and classification tasks for AI projects. I translated and localized multilingual audio datasets to improve model accuracy. I regularly conducted quality checks to maintain high transcription and annotation standards. • Transcribed and annotated audio for speech processing models • Labeled and classified audio segments for various acoustic features • Performed translation on diverse audio languages • Maintained deadlines and compliance with project accuracy quotas

I annotated and transcribed audio data, supporting speech recognition and classification tasks for AI projects. I translated and localized multilingual audio datasets to improve model accuracy. I regularly conducted quality checks to maintain high transcription and annotation standards. • Transcribed and annotated audio for speech processing models • Labeled and classified audio segments for various acoustic features • Performed translation on diverse audio languages • Maintained deadlines and compliance with project accuracy quotas

2022 - 2024

AI Data Labeling Specialist

Scale AIImageClassification

I managed image annotation projects for machine learning models, focusing on accurate visual content labeling. I ensured quality control by reviewing image datasets for consistency and correctness. I worked collaboratively to refine guidelines for visual annotation and streamline the labeling process. • Annotated and classified digital images for computer vision training • Implemented annotation standards based on project requirements • Conducted reviews to validate image labeling accuracy • Assisted in optimizing annotation workflows with feedback

I managed image annotation projects for machine learning models, focusing on accurate visual content labeling. I ensured quality control by reviewing image datasets for consistency and correctness. I worked collaboratively to refine guidelines for visual annotation and streamline the labeling process. • Annotated and classified digital images for computer vision training • Implemented annotation standards based on project requirements • Conducted reviews to validate image labeling accuracy • Assisted in optimizing annotation workflows with feedback

2022 - 2024

AI Data Labeling Specialist

Scale AITextClassification

I performed high-accuracy annotation and classification of text data for artificial intelligence and machine learning initiatives. I reviewed, labeled, and verified large volumes of multilingual text to ensure training data met project standards. I contributed to improving annotation guidelines and overall workflow efficiency in collaboration with project teams. • Labeled and classified text datasets for natural language processing (NLP) tasks • Conducted translation and localization of textual data sets • Ensured quality and consistency through review and correction • Delivered timely results while maintaining high accuracy

I performed high-accuracy annotation and classification of text data for artificial intelligence and machine learning initiatives. I reviewed, labeled, and verified large volumes of multilingual text to ensure training data met project standards. I contributed to improving annotation guidelines and overall workflow efficiency in collaboration with project teams. • Labeled and classified text datasets for natural language processing (NLP) tasks • Conducted translation and localization of textual data sets • Ensured quality and consistency through review and correction • Delivered timely results while maintaining high accuracy

2022 - 2024

Education

Work History