Key Takeaways
- • Brevan Howard has experienced an exodus of at least 10 senior technologists since Mike Sanders arrived as head of technology from JPMorgan in 2024, signaling organizational restructuring at the multistrategy macro hedge fund.
- • Two recent departures include Charles Clarke, the chief information security officer who joined only in November 2025 from the London Stock Exchange Group, and Kesh Iyer, global head of infrastructure who transitioned from Point72 and was promoted to the role in April 2025.
- • Brevan Howard is actively replacing departing technologists, having already secured Ziad Afra from Schonfeld as Iyer's replacement for the global infrastructure leadership position, with Afra serving as head of core infrastructure and technology operations at his previous employer.
- • The technology leadership transitions appear tied to Mike Sanders' consolidation of senior personnel in London, with departing executives potentially affected by organizational realignment rather than performance issues.
- • The fund's technology team volatility reflects broader challenges in retaining senior technologists at alternative investment managers, particularly in core infrastructure and security roles.
Summary
Brevan Howard, a London-based multistrategy hedge fund with a macro focus, is undergoing significant turnover in its technology leadership ranks. According to eFinancialCareers, the fund has lost at least 10 senior technologists since Mike Sanders joined from JPMorgan as head of technology in 2024, a period marking visible restructuring across the technology organization.
The most recent departures involve two key positions. Charles Clarke, who served as chief information security officer, departed after joining the fund in November 2025 from the London Stock Exchange Group. The circumstances surrounding Clarke's rapid exit remain unclear, though he appears to have been brought in as a replacement for Katherine Garrod, the previous CISO who departed for Marshall Wace less than two years into her tenure. Kesh Iyer, who held the position of global head of infrastructure, also exited recently. Iyer had joined Brevan from Point72 in June 2024 as New York-based head of platform engineering before being elevated to global infrastructure leadership in April 2025.
Despite the departures, Brevan Howard is actively backfilling senior technology roles. The fund has already identified Ziad Afra, currently head of core infrastructure and technology operations at Schonfeld, as Iyer's replacement. Industry sources suggest that Iyer's departure may have involved mutual agreement, potentially related to Mike Sanders' consolidation of senior technology leadership in the London office.
The pattern of senior technologist exits reflects both deliberate organizational restructuring and the competitive talent market for experienced infrastructure and security professionals in asset management. Brevan Howard has declined to comment on specific departures, leaving questions about whether additional transitions are planned as the new technology leadership structure solidifies.
The most recent departures involve two key positions. Charles Clarke, who served as chief information security officer, departed after joining the fund in November 2025 from the London Stock Exchange Group. The circumstances surrounding Clarke's rapid exit remain unclear, though he appears to have been brought in as a replacement for Katherine Garrod, the previous CISO who departed for Marshall Wace less than two years into her tenure. Kesh Iyer, who held the position of global head of infrastructure, also exited recently. Iyer had joined Brevan from Point72 in June 2024 as New York-based head of platform engineering before being elevated to global infrastructure leadership in April 2025.
Despite the departures, Brevan Howard is actively backfilling senior technology roles. The fund has already identified Ziad Afra, currently head of core infrastructure and technology operations at Schonfeld, as Iyer's replacement. Industry sources suggest that Iyer's departure may have involved mutual agreement, potentially related to Mike Sanders' consolidation of senior technology leadership in the London office.
The pattern of senior technologist exits reflects both deliberate organizational restructuring and the competitive talent market for experienced infrastructure and security professionals in asset management. Brevan Howard has declined to comment on specific departures, leaving questions about whether additional transitions are planned as the new technology leadership structure solidifies.
Go deeper than the headline
Research every firm in this story, track the ones that matter and get the daily briefing — free for 7 days.