Okanga O.

Key Skills

Software

Appen

Other

Telus

Lionbridge

CVAT

Labelbox

Scale AI

Top Subject Matter

LLM evaluation

safety policy

RLHF-style preference data

Top Data Types

Text

Video

Audio

Document

Image

Top Task Types

Transcription

Classification

Freelancer Overview

AI Data Annotation Specialist (LLM Evaluator & Multimodal Annotator). Brings 9+ years of professional experience across legal operations, contract review, compliance, and structured analysis. Core strengths include Appen, Other, and Telus. Education includes Master of Science, University of Nairobi (2026) and Postgraduate Diploma, University of the People (2024). AI-training focus includes data types such as Text, Video, and Audio and labeling workflows including Evaluation, Rating, and Transcription.

Labeling Experience

AI Data Annotation Specialist (LLM Evaluator & Multimodal Annotator)

AppenText

Delivered LLM output evaluation work across text datasets by ranking responses for factual accuracy, instruction-following, tone, and safety. Performed rubric-based quality scoring and produced written justifications for each ranking decision. Supported RLHF-style training pipelines through consistent preference labeling. • Apply detailed rubrics for evaluation • Produce citation-free written ranking justifications • Escalate ambiguous or policy-violating samples with notes • Support downstream QA and reviewer workflows

2025 - Present

AI Data Specialist (FlexAI Solutions)

OtherVideo

Completed comprehensive multimodal annotation across text, image, video, and audio modalities for AI training datasets. Conducted entity labeling, object tagging, content categorization, and counting tasks aligned to project guidelines. Developed and evaluated prompt-response pairs to test factual accuracy and response clarity for model reasoning. • Annotate multimodal content for training • Create and evaluate prompt-response pairs • Preprocess and organize datasets for ML readiness • Maintain labeling consistency under changing guidelines

2022 - 2024

Freelance Data Evaluator (TELUS AI)

TelusAudioTranscription

Performed AI dataset evaluation and annotation across audio, video, image, and text modalities. Conducted pairwise evaluation and content ranking on AI-generated outputs, delivering structured evidence-supported feedback. Completed image bounding-box annotation and audio transcription labeling according to strict project guidelines. • Pairwise ranking and content evaluation • Bounding-box annotation for images • Audio transcription and related labeling • Generate QA reports for performance optimization

2020 - 2022

Content Annotation Specialist (Lionbridge)

LionbridgeDocumentClassification

Annotated multimedia content for AI model training while strictly following project labeling guidelines and quality standards. Ensured consistent labeling outputs aligned with predefined benchmarks. Supported ongoing efforts to improve annotation efficiency and consistency. • Adhere to multimedia labeling guidelines • Maintain quality standards for annotations • Contribute to consistency improvements • Support active AI training labeling projects

2018 - 2020

Education

Work History