Justin Llewellyn-Jones

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Justin Llewellyn-Jones
Justin Llewellyn-Jones.jpg
Occupation Chief Operating Officer
Employer Fidessa
Location New York, New York
Twitter @jllewellynjones
Website www.fidessa.com

Justin Llewellyn-Jones is chief operating officer and global head of derivatives at Fidessa/ION. He is also managing director of Fidessa’s U.S.-hosted services business.[1][2]

He announced his departure from the firm in June 2019.


Llewellyn-Jones took the role of COO and global derivatives head in May 2011.

As COO, Llewellyn-Jones oversees all operations across the U.S. and is focused on directing Fidessa’s SaaS solutions as well as R&D, operations, infrastructure and client services.[3]

Previously, he served as managing director of Fidessa’s U.S. hosted services business from July 2008 to May 2011.

Prior to that, Llewellyn-Jones was senior vice president of service delivery for Fidessa’s U.S.-hosted services business from April 2005 to July 2008. Before that, he was director of client services at Broadridge Financial/ADP Wilco from October 1999 to April 2005. He served as a project manager/manager's assistant at NatWest from 1994 to 1997.

John Lothian News Interviews

Vision Statement: Fidessa Looking At Realtime and Predictive Analytics and Cybersecurity
The financial technology space is always moving and aiming at moving targets. Justin Llewellyn-Jones COO and global head of derivatives for Fidessa, said firms now are facing broader and deeper technology challenges than ever, from real time order analytics to new cyber security needs.

Speaking with John Lothian News at the FIA IDX conference in London, Llewellyn-Jones said Fidessa has been focused on expanding its execution algorithms, an initiative that was moving forward over a year ago. (July 2015)

It’s Easier This Way: Justin Llewellyn-Jones of Fidessa Maps A Compliance Path for Firms
Today, firms are dealing with three major issues: regulation, compliance and global economics. None of the three are friendly to brokers and trading firms, and that’s where Justin Llewellyn-Jones, chief operating officer of Fidessa, believes there is opportunity.

Llewellyn-Jones spoke with JLN editor-in-chief Jim Kharouf last month at the IDX conference in London, about how Fidessa is developing new technology that will assist firms in making the trading, risk and account management, and compliance task easier. (July 2014)

Justin Llewellyn-Jones of Fidessa Talks ISVs, Regulation & Technology
Justin Llewellyn-Jones, chief operating officer of Fidessa, thinks globally and well, acts globally too. Llewellyn-Jones spoke with JLN editor-in-chief Jim Kharouf about how Fidessa is adapting to the new global marketplace and the demand for multi-asset class platforms and networks. (June 2013)

He is also an FIA member, FIA Chicago Division member and FIA Market Technology Division member.


He attended Cardiff University/Prifysgol Caerdydd, earning a master of science, computer science degree and The University of Manchester, where he earned a bachelor of law degree.


  1. Fidessa appoints Justin Llewellyn-Jones as COO of its US business. Fidessa.
  2. Justin Llewellyn-Jones. LinkedIn.
  3. Fidessa appoints Justin Llewellyn-Jones as COO of its US business. Fidessa.