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: Streamlining trading and investment processes with data standards and identifiers

Financial institutions are integrating not only greater volumes of data for use across their organisation but also more varieties of data. As well, that data is being applied to more use cases than ever before, especially regulatory compliance and ESG integration. Due to this increased complexity of institutions’ data needs, however, information often arrives into...

BLOG

Private Markets Data Opportunities Under the Microscope: Webinar Preview

As institutional asset managers accelerate their allocations into private markets, they often find themselves facing an alien landscape when it comes to data. Used to the data-driven systems that power public capital markets, investors in private markets, including private equity and private credit as well as alternatives such as property, must contend with greater opacity,...

EVENT

Data Management Summit New York City

Now in its 15th year the Data Management Summit NYC brings together the North American data management community to explore how data strategy is evolving to drive business outcomes and speed to market in changing times.

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...