Teresa N.

Key Skills

Software

Appen

Top Subject Matter

Autonomous vehicles / computer vision datasets

NLP/search relevance and dataset quality evaluation

Audio transcription dataset labeling

Top Data Types

Image

Text

Audio

Top Task Types

Segmentation

Classification

Transcription

Freelancer Overview

Data Labeling Specialist (Freelance) — image segmentation & object detection. Brings 3+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Internal, Proprietary Tooling, and Appen. Education includes Degree in Information Technology, Jomo Kenyatta University of Agriculture and Technology (2023) and Certificate in Computer Skills, St. Jude’s Technical College (2020). AI-training focus includes data types such as Image, Text, and Audio and labeling workflows including Segmentation, Classification, and Transcription.

Labeling Experience

Data Labeling Specialist (Freelance) — image segmentation & object detection

ImageSegmentation

Performed high-fidelity image segmentation and object detection for autonomous vehicle projects while collaborating with ML engineers to refine labeling guidelines. Maintained rigorous Quality Assurance standards and achieved a consistent accuracy rate while meeting weekly throughput quotas. Labeled over 5,000 frames monthly, supporting model training and data integrity for machine learning use cases. • Segmentation and object detection on image frames • Assisted in refining labeling guidelines with ML engineers • Quality assurance to maintain high accuracy and integrity • Met and exceeded weekly production targets

2025 - 2026

Freelance Data Contributor (Appen) — image categorization

AppenImageClassification

Performed image categorization tasks for global tech clients as part of a multi-task labeling program. Applied labeling instructions consistently to help create clean, usable training data. Reported systematic errors in dataset batches to reduce the risk of noisy inputs for the training pipeline. • Image categorization labeling • Consistent adherence to labeling instructions • Systematic error detection and reporting • Supporting dataset quality for ML training

2024 - 2024

Freelance Data Contributor (Appen) — audio transcription

AppenAudioTranscription

Completed audio transcription tasks as part of a broader labeling workload for global tech clients. Ensured that transcriptions aligned with dataset requirements and quality expectations while supporting downstream model training. Collaborated indirectly through platform processes by adapting to client specifications and correcting issues when identified. • Audio transcription labeling • Compliance with client dataset requirements • Quality-focused output suitable for model training • Adaptation to platform and specification changes

2024 - 2024

Freelance Data Contributor (Appen) — search relevance and dataset categorization

AppenTextClassification

Executed data labeling tasks across multiple categories including search relevance ranking and text-based dataset processing for global tech clients. Identified and reported systematic dataset errors to prevent noisy data from entering the training pipeline. Adapted to changing project requirements and technical specifications across labeling platforms. • Search relevance ranking and dataset classification • Error detection and reporting for dataset quality • Adaptation to shifting labeling guidelines • Work across multiple client/project labeling platforms

2024 - 2024

Education

Work History