Sarah Wanjiru

Key Skills

Software

Appen

Remotasks

Top Subject Matter

General AI/Data Labeling

NLP/LLM Training

Multi-modal Annotation (Image, Text, Video)

Top Data Types

Image

Text

Document

Top Task Types

Classification

RLHF

Object Detection

Evaluation Rating

Freelancer Overview

Freelance Data Annotator. Core strengths include Appen, Outlier, and Remotasks. Education includes Bachelor of Science, Kenyatta University (2019) and Nanodegree Certificate, Udacity (2023). AI-training focus includes data types such as Image and Text and labeling workflows including Classification, RLHF, and Object Detection.

Labeling Experience

Freelance Data Annotator

AppenImageClassification

As a Freelance Data Annotator, I evaluated image relevance and quality according to established guidelines. I performed comparative image annotation, choosing optimal samples based on clarity and composition. Additionally, I assessed the accuracy of AI-generated text outputs. • Conducted image preference evaluation to score images on relevance and clarity. • Produced structured feedback on search result quality. • Reviewed AI text output for errors and ambiguities. • Delivered recommendations to improve labeling workflows.

As a Freelance Data Annotator, I evaluated image relevance and quality according to established guidelines. I performed comparative image annotation, choosing optimal samples based on clarity and composition. Additionally, I assessed the accuracy of AI-generated text outputs. • Conducted image preference evaluation to score images on relevance and clarity. • Produced structured feedback on search result quality. • Reviewed AI text output for errors and ambiguities. • Delivered recommendations to improve labeling workflows.

2023 - Present

AI Training Data Contributor

TextRLHF

In the role of AI Training Data Contributor, I evaluated and improved AI-generated text for safety and relevance. I provided structured feedback to facilitate reinforcement learning from human feedback (RLHF). My tasks included labeling and categorizing data samples for LLM fine-tuning. • Assessed and rated model responses for accuracy and appropriateness. • Flagged unsafe or irrelevant AI-generated content. • Delivered feedback to guide iterative model improvements. • Labeled text data for large language model enhancement.

In the role of AI Training Data Contributor, I evaluated and improved AI-generated text for safety and relevance. I provided structured feedback to facilitate reinforcement learning from human feedback (RLHF). My tasks included labeling and categorizing data samples for LLM fine-tuning. • Assessed and rated model responses for accuracy and appropriateness. • Flagged unsafe or irrelevant AI-generated content. • Delivered feedback to guide iterative model improvements. • Labeled text data for large language model enhancement.

2022 - 2023

Data Annotation Specialist

RemotasksImageObject Detection

As a Data Annotation Specialist, I performed detailed object labeling on image datasets. I executed image annotation tasks including tagging, captioning, and attribute classification. I also engaged in text and video annotation supporting AI model development. • Labeled images for object detection and categorization. • Performed text annotation such as NER and sentiment labeling. • Annotated video content frame-by-frame for action recognition. • Ensured high data quality by following strict annotation guidelines.

As a Data Annotation Specialist, I performed detailed object labeling on image datasets. I executed image annotation tasks including tagging, captioning, and attribute classification. I also engaged in text and video annotation supporting AI model development. • Labeled images for object detection and categorization. • Performed text annotation such as NER and sentiment labeling. • Annotated video content frame-by-frame for action recognition. • Ensured high data quality by following strict annotation guidelines.

2021 - 2023

Education

Work History