About a-team Marketing Services
The knowledge platform for the financial technology industry
The knowledge platform for the financial technology industry

A-Team Insight Blogs

John Randles Leaves CEO Role at Bloomberg PolarLake to Join Start-up

Subscribe to our newsletter

John Randles has left the role of CEO at Bloomberg PolarLake and is on gardening leave until the end of September, after which he will become CEO of a technology start-up. Randles has been replaced by Warren Buckley, chief technology officer (CTO) at Bloomberg PolarLake and founder of PolarLake in 2002.

The switch took place last week, with Randles saying he enjoyed his time at Bloomberg, but is not yet free to name or describe the start-up he is moving to. Randles joined PolarLake as CEO in May 2006 and went on to work with the company for six years as it was transformed from being a provider of an industry agnostic enterprise service bus to a provider of a data management platform designed for the securities industry. Innovation, such as early adoption of semantic technology, supported the company’s acquisition by Bloomberg in 2012.

Buckley steps up to the post of CEO at Bloomberg PolarLake having founded PolarLake in 2002 and taken the role of CTO, a role he maintained after the Bloomberg acquisition of the company and that he is only now relinquishing. His early career includes three years as the founder and CTO of XIAM, a provider of wireless content targeting solutions that went on to be acquired by Qualcomm, and five years as a systems architect at Bank of Ireland Group Treasury.

Randles started his career with a seven-year stint at multi-channel banking specialist Eontec before it was acquired by Siebel Systems, where he became CTO of the company’s banking business.

Subscribe to our newsletter

Related content

WEBINAR

Upcoming Webinar: End-to-End Lineage for Financial Services: The Missing Link for Both Compliance and AI Readiness

8 October 2025 10:00am ET | 3:00pm London | 4:00pm CET Duration: 50 Minutes The importance of complete robust end-to-end data lineage in financial services and capital markets cannot be overstated. Without the ability to trace and verify data across its lifecycle, many critical workflows – from trade reconciliation to risk management – cannot be...

BLOG

Implementing Technology Business Management with Pace and Precision

By Simon Mendoza, Chief Technology Officer, Calero. Implementing a Technology Business Management (TBM) platform can feel like a major logistical challenge. Every organisation starts from a different place – different data maturity, internal priorities and levels of stakeholder engagement. But that doesn’t mean every implementation needs to be a blank slate. The fastest and most...

EVENT

TradingTech Briefing New York

Our TradingTech Briefing in New York is aimed at senior-level decision makers in trading technology, electronic execution, trading architecture and offers a day packed with insight from practitioners and from innovative suppliers happy to share their experiences in dealing with the enterprise challenges facing our marketplace.

GUIDE

AI in Capital Markets: Practical Insight for a Transforming Industry – Free Handbook

AI is no longer on the horizon – it’s embedded in the infrastructure of modern capital markets. But separating real impact from inflated promises requires a grounded, practical understanding. The AI in Capital Markets Handbook 2025 provides exactly that. Designed for data-driven professionals across the trade life-cycle, compliance, infrastructure, and strategy, this handbook goes beyond...