Victor K.

Key Skills

Software

Labelbox

Other

CVAT

Top Subject Matter

East African agricultural AI and autonomous driving pilots

LLM preference alignment

multilingual content safety

Top Data Types

Image

Audio

Text

Top Task Types

Bounding Box

Transcription

Data Collection

RLHF

Red Teaming

Freelancer Overview

Senior AI Data & Annotation Specialist (Freelance/High-Volume Annotation Projects). Brings 3+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Labelbox, Other, and CVAT. Education includes Master of Science, University of Nairobi (2025) and Bachelor of Science, Jomo Kenyatta University of Agriculture and Technology (2021). AI-training focus includes data types such as Image, Audio, and Text and labeling workflows including Bounding Box, Transcription, and Data Collection.

Labeling Experience

Senior AI Data & Annotation Specialist (Localization Quality Review)

OtherText

Conducted localization quality reviews for English/Swahili outputs focused on cultural accuracy and natural phrasing. Validated translated content for Kenyan and pan-African AI model suitability. Ensured linguistic and contextual consistency for multilingual evaluation datasets. • Reviewed English ↔ Swahili translated outputs • Assessed cultural accuracy and natural phrasing • Supported localization QA for Kenyan and pan-African AI models • Contributed to maintaining high-quality multilingual annotation standards

2024 - 2026

Senior AI Data & Annotation Specialist (Data Quality Analyst)

OtherTextRed Teaming

Performed content moderation and policy adherence checks on 8,500+ prompts and responses. Flagged harmful, biased, and off-topic content to improve dataset safety and quality. Ensured consistent moderation decisions within high-volume labeling pipelines. • Moderated and policy-checked 8,500+ prompt/response items • Flagged harmful, biased, or off-topic content for platform ingestion • Supported data quality improvements for leading data platforms • Preserved annotation consistency with high inter-annotator agreement

2024 - 2026

Senior AI Data & Annotation Specialist (Prompt & Response Reviewer)

OtherTextRLHF

Evaluated 7,200+ AI-generated responses using pairwise comparison, preference ranking, and safety scoring for LLM fine-tuning. Applied rubric-driven assessment to support global LLM evaluation projects. Ensured label consistency to support training and alignment workflows. • Completed 7,200+ pairwise comparisons and preference rankings • Scored responses for safety and alignment using predefined criteria • Supported LLM fine-tuning and evaluation pipelines • Maintained 98.5% inter-annotator agreement across high-volume work

2024 - 2026

Senior AI Data & Annotation Specialist (Audio Transcription QA)

OtherAudioTranscription

Reviewed and corrected 5,200+ ASR-generated transcripts for English and Swahili, performing transcription QA to improve accuracy. Reduced Word Error Rate by 22% for a Nairobi-based NLP startup. Applied consistent QA checks across multilingual transcripts in a production pipeline. • Corrected 5,200+ English/Swahili ASR transcripts • Improved transcript quality to reduce WER by 22% • Performed QA to ensure alignment to language expectations • Supported weekly high-volume task delivery of 1,400+ tasks

2024 - 2026

Senior AI Data & Annotation Specialist (Freelance/High-Volume Annotation Projects)

LabelboxImageBounding Box

Labeled 12,000+ East African agricultural and autonomous-driving images using bounding boxes, polygons, and semantic segmentation. Supported multimodal AI dataset construction to improve downstream model performance. Maintained consistent labeling quality across high-volume production pipelines. • Delivered 12,000+ image annotations with geometric and semantic labels • Focused on image labeling for agricultural AI and autonomous driving pilots • Ensured quality via inter-annotator agreement tracking • Sustained weekly throughput of 1,400+ tasks

2024 - 2026

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Education

Work History