Otieno D.

Key Skills

Software

Appen

Other

Data Annotation Tech

Top Subject Matter

AI training datasets

Content creation and research writing for clients

Top Data Types

Text

Image

Document

Top Task Types

Classification

Text Generation

Question Answering

Text Summarization

Transcription

Data Collection

Point/Key Point

Prompt + Response Writing (SFT)

Computer Programming/Coding

Evaluation/Rating

Object Detection

Cuboid

Polygon

Freelancer Overview

Data Annotator | Remote at Appen. Brings 6+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Appen and Other. Education includes Master of Business Administration, University of Nairobi (2025) and Bachelor of Science, University of Embu (2022). AI-training focus includes data types such as Text and labeling workflows including Classification and Text Generation.

Labeling Experience

Freelance Writer | Remote at Upwork

OtherTextText Generation

Worked as a freelance writer producing research-based content that supported clients’ information needs, which involved creating and editing text deliverables. • Delivered high-quality written content including articles, blogs, and research-based reports. • Conducted in-depth research to produce accurate and engaging content. • Managed multiple projects simultaneously while maintaining deadlines and client satisfaction. • Edited and proofread content to ensure clarity, grammar, and consistency.

2021 - Present

Data Annotator | Remote at Appen

AppenTextClassification

Served as a Data Annotator performing AI training support through large-scale dataset labeling and annotation. • Labeled and annotated large datasets to train machine learning and AI models. • Reviewed and validated data to ensure high accuracy and consistency. • Followed detailed project guidelines and adapted to new annotation tasks. • Conducted quality checks to improve dataset reliability and model performance.

2025 - 2026

Education

Work History