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

Jonathan Clark to Leave Citisoft and Join Pentagon Consulting

Subscribe to our newsletter

Jonathan Clark will leave Citisoft, the buy-side consultancy he cofounded 30 years ago and sold to Tech Mahindra in 2005, at the end of this month and take up the role of CEO at Pentagon Consulting Group, also a buy-side specialist, at the start of next month.

At Citisoft, Clark and his colleagues grew the company into a trans-Atlantic advisory and delivery consulting firm. When the company was acquired by Tech Mahindra, Clark combined the advisory and project leadership strengths of Citisoft with the offshore technology and business processing services of Tech Mahindra to offer the market an end-to-end service from strategy to day-to-day operations. He also set Tech Mahindra strategy to develop platforms that deliver specific managed services.

Among the platforms and services developed during Clark’s time at Tech Mahindra are a market data utility providing global security and price information, a pensions administration service, and a trade execution expense management service. Despite his impending departure from Citisoft, Clark says Tech Mahindra has asked him to continue to work with the company as a client of Pentagon.

At Pentagon, Clark will work alongside Matthew Peacock, the company’s cofounder and CEO, who will move to the position of executive chairman when Clark joins. Pentagon has over 10 years’ experience of implementing SimCorp and Markit EDM solutions and plans to develop relationships with additional software vendors and move up the value chain to add more advisory services to its implementation skills. With about 36 employees based mainly in London with a few in North America, Pentagon also plans to grow its employee base as it builds business in the UK, Europe and North America.

Clark says that after so long at Citisoft it is time for him to make a change and that he is looking forward to being back on the development side of the business and taking Pentagon into its next stage of growth. Clark will be based in London and becomes a shareholder in Pentagon along with Peacock.

Subscribe to our newsletter

Related content

WEBINAR

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

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 executed effectively. At the top of the list is regulatory compliance. Regulators demand a...

BLOG

The Year in Data: Agentic AI Points to a Future of Efficiency

Touted as the next frontier of artificial intelligence, agentic AI hogged the data management headlines in 2025. Seemingly ushering the realisation of the no-more-drudge-work predictions that heralded the arrival of general AI years back, agentic AI has certainly become the target of institutional investment and developer innovation in the past 12 months. According to a...

EVENT

RegTech Summit London

Now in its 9th year, the RegTech Summit in London will bring together the RegTech ecosystem to explore how the European capital markets financial industry can leverage technology to drive innovation, cut costs and support regulatory change.

GUIDE

Enterprise Data Management, 2010 Edition

The global regulatory community has become increasingly aware of the data management challenge within financial institutions, as it struggles with its own challenge of better tracking systemic risk across financial markets. The US regulator in particular is seemingly keen to kick off a standardisation process and also wants the regulatory community to begin collecting additional...