Open to opportunities

arek User

@arekuser

I build governed Generative AI platforms, RAG systems, and agentic workflows from architecture through production deployment.

United Kingdom

Message

What I'm looking for

AI Manager. AI Architect

At AdBrain, I lead delivery of governed Generative AI platforms, including a reusable extension of the open-source Onyx platform with risk classification, audit logging, human oversight, and model documentation. I also built a production agentic RAG knowledge assistant that reduced internal document lookup time by an estimated 60–70%.

I've delivered machine learning, recommendation, NLP, and optimization systems across e-commerce, telecom, finance, and energy. My work includes a 35% KPI improvement for a price-optimization engine, a 30% conversion uplift for an e-commerce recommendation system, and voice-analysis models reaching 86% quality-score correlation with human ratings.

Experience

Work history, roles, and key accomplishments

Current

Head of AI

Current

AdBrain Limited

Jan 2023 - Present (3 years 7 months)

Served as solution architect and team lead, converting the open-source enterprise AI platform Onyx into a fully governed system with risk classification, audit logging, human-oversight controls, and model documentation. Delivered AI solutions for clients including a price optimization engine and an agentic knowledge assistant, achieving significant KPI improvements and reducing knowledge lookup time by 60-70%.