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AI Evenings LDN: AI Agents in Action
Ioannis Mesionis, Senior AI/ML Engineer at King, explored the shift from simple chatbots to fully capable AI agents, breaking down how modern agents think, act, and learn and what this evolution means for real-world applications.
BrainStation London
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Wednesday, March 18, 2026
- Ioannis MesionisSenior AI/ML Engineer, King
Ioannis Mesionis
Senior AI/ML Engineer, King
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"The way I want you to think about AI agents is similar to the work that we do on a daily basis where we work on teams. We have, in a business setting, different people and every single one specializes in their specific craft. It’s the same implementation that we like to have when it comes to AI agents."
- Ioannis Mesionis, Senior AI/ML Engineer at Microsoft (King)
Ioannis Mesionis
Senior AI/ML Engineer, King
Ioannis is an accomplished data leader with over six years of experience. In his current role at King, part of Microsoft, he leverages his extensive expertise in Python, machine learning, MLOps, and machine learning engineering best practices to deliver data-driven solutions. Ioannis excels at managing teams and collaborating with stakeholders to translate complex business problems into actionable insights. Previously, Ioannis was a Lead Data Scientist at easyJet, where his responsibilities ranged from conceptualizing and implementing models to leading data science projects and mentoring colleagues. His technical proficiency encompasses machine learning algorithms, recommendation and ranking frameworks, data pre-processing, feature engineering, model evaluation, deployment, and performance optimization.