Jonathan Simpson is a Director at BlackRock. Colleagues describe them as "Jonathan is hard-working, diligent and an expert in his field. A technical wizard, his deep and broad understanding of IT infrastructure, network management, cybersecurity and the like is rare. He's also a highly tenacious problem-solver and as a result of both his knowledge and personal drive he's always demonstrated an impressive ability to diagnose and solve complex technical issues. Always keen to help, Jonathan cares deeply about high quality service and backs this up with the skill to deliver it.", "Jonathan is a very hard working and dedicated individual. He is always helpful and encourages continual learning. I enjoyed working alongside him at Hymans Robertson, where he was an asset to his team.", and "Jonathan has been a fantastic manager and mentor to me. He has a deep understanding of his field and is always able to articulate that knowledge in a clear way, adapting to the level of technical knowledge of his audience. Jonathan has given me the support and room to grow and develop my potential, both as a member of his team and helping raise my profile within the firm."