Meet the Team

Craig Hartzel is the founder and CEO of Hartz AI. He trains SME teams to adopt AI tools they can use independently. He has trained over 500 employees across professional services, charities, sport governing bodies and real estate.

Craig built Hartz AI to give UK businesses a clear, practical path to AI capability. He works directly with SME teams, senior leaders and public sector organisations who want to use AI without the hype.

His approach is hands-on. He runs training workshops that leave teams confident enough to use AI tools the same week. He audits operations to find where AI saves real time. He works with leadership teams on long-term AI strategy.

Craig focuses on tools teams can run with independently. He does not sell ongoing dependency. His goal is to build capability, not create reliance on consultants.

Rivka Abecasis leads AI compliance at Hartz AI. She helps clients use AI safely, legally and with confidence. She specialises in UK GDPR, data protection, risk controls and the practical steps organisations need as AI regulation tightens.

Her background spans compliance leadership, policy development and operational governance. She has worked with complex regulatory frameworks and knows how to turn rules into clear actions teams can follow.

At Hartz AI, Rivka builds compliance frameworks, reviews client workflows and advises on safe AI adoption. She focuses on simple guidance, clear safeguards and reducing risk without slowing progress.

Clients trust her because she explains compliance in plain English and gives direct, workable advice. She makes AI safe to use, easy to govern and ready for future regulation.

Samuel Kelly leads the technical work at Hartz AI. He designs and builds AI solutions that fit how businesses actually operate. He combines deep expertise in data science with enterprise-grade software engineering to create systems that are robust, scalable and practical.

Samuel translates complex business requirements into working AI applications. He builds AI agents, automates workflows and integrates large language models into existing systems. Every solution is built around the client's processes, data and risk profile.

His focus is on reliability and results. He builds bespoke tools that give SMEs a genuine competitive advantage - not prototypes, but production-grade systems that teams use every day.