Didier Bouillard
Chief Executive Officer

Didier Bouillard serves as CEO of Calypso and AxiomSL, following the merger of the two companies in July 2021. He joined Calypso as CEO in April 2018 and is based in London.

Prior to Calypso, Didier served as CEO of Ullink, a global provider of connectivity and trading services, from early 2015. The primary objective of the assignment was to merge NYFIX, acquired by Ullink in late 2014, and transition the overall group from a founder-led business into a private equity-owned business. After several years of steady growth of revenues and profits, Ullink was successfully sold to Nordic Capital-backed Itiviti. Prior to Ullink, Didier was an Executive Vice President at SunGard Financial Systems (now part of FIS) and operated a substantial part of the Capital Markets and Electronic Trading division, playing a key role in global distribution.

Since the start of his career in the 1990’s, Didier has provided his leadership to several successful entrepreneurial ventures, including as Partner for Ubitrade, Managing Director for Capital Fund Management, and CEO for Fermat, gaining extensive knowledge of the capital markets and banking industry as well as true international exposure.

Didier graduated from Ecole Nationale des Ponts et Chaussées in 1988.

Helene Koutsoudakis
Chief Financial Officer

Helene Koutsoudakis is Chief Financial Officer, providing enterprise-wide oversight of Calypso and AxiomSL’s financial operations, including financial planning and analysis, commercial and operational improvements, and stakeholder relationships management.

Prior to Calypso, Helene served as an Operating Partner at HG Capital, supporting their portfolio businesses in the software and broader technology sectors. Previously, she was with Advanced Computer Software Group as Group Finance Director, where she played a pivotal role in the sale of the business to Vista Equity Partners in March 2015. Prior to that, she spent more than eight years with COA Solutions (acquired by Advanced Computer Software Group) as Group Financial Controller leading the integration process of COA solutions into the larger Advanced Software Group.

Helene holds a degree in Accounting from the Rand Afrikaans University (now University of Johannesburg) and an ACCA qualification from The Association of Chartered Certified Accountants.

Mayank Shah
Chief of Staff

Mayank Shah is the Chief of Staff, overseeing strategic partnerships, marketing, sales operations, operational board reporting and transformation initiatives for Calypso and AxiomSL.

Prior to Calypso, Mayank served as Senior Product Manager at Citadel Technology, the technology subsidiary of Citadel Investment Group. Previously, Mayank was an Associate Partner at IBM and a Senior Manager at BearingPoint (formerly KPMG Consulting), managing strategy and transformation projects for global financial services institutions.

Mayank holds an MBA from the University of Maryland and a Bachelor’s degree in Mechanical Engineering from Bombay University.

Joshua Geller
Chief Legal Officer

Joshua Geller is Chief Legal Officer, overseeing all legal matters for AxiomSL and Calypso.

Prior to AxiomSL, Josh was a partner in the Corporate Department of Curtis, Mallet-Prevost, Colt & Mosle LLP where he was a member of the Mergers & Acquisitions, Private Client, and Investment Management practice groups, counseling clients on a wide range of strategic transactions across different industries. Josh joined Curtis as a summer associate and held associate and counsel roles before being named partner.

Josh holds a B.A. in economics from Yeshiva University, where he graduated magna cum laude, and a J.D. from Fordham University, where he was a member of the Fordham Urban Law Journal. He is admitted to practice in the States of New York and New Jersey. He is a member of the New York City Bar Association, where he serves as a member of the Trade Secrets Committee.

Richard Bentley
Chief Product and Engineering Officer

Richard Bentley serves as the Chief Product and Engineering Officer for Calypso and AxiomSL, overseeing product management, engineering and quality assurance.

Prior to Calypso, Richard served as Chief Product Officer for Ullink (now part of Itiviti) for five years. In 2000, he was a founding member of Apama (now part of Software AG). Richard began his career as a research scientist, holding roles with Xerox Research Centre (EuroPARC) and the Fraunhofer Institute and over the last 20 years has served in various product roles for capital markets technology firms.

Richard holds a PhD and a BSc in Computer Science from Lancaster University.

Laurent Jacquemin
Chief Customer Officer

Laurent Jacquemin is Chief Customer Officer, overseeing the global customer, professional services and cloud organizations.

Previously, Laurent led FIS’ global Post-trade Processing business, as a Division Executive. Prior to this role, he spent nearly seven years with SunGard Financial Systems as the Global Head, progressing to EVP and then the Group President of Post-trade Derivatives. Prior to that, he spent three years with GL Trade as a Managing Director and 11 years with Ubitrade in a variety of management roles in professional and customer services, in product development and strategy, and in sales. He began his career as an IT Analyst and Project Manager in the artificial intelligence space with GSI TESCI.

Laurent holds engineering degrees in Chemistry and Physics from ESPCI.

Ben Fisbein
Global Head of Sales, Capital Markets and Regulatory Solutions

Ben Fisbein is Global Head of Sales for Capital Market and Regulatory Solutions, managing the global sales organization. His focus is on enabling clients to increase their STP and make better trading decisions, while remaining compliant with current and future regulatory requirements. Prior to this role, he managed the North America sales organization at Calypso Technology.

Prior to Calypso, Ben spent 14 years at Moody’s Analytics and Fermat, where he held numerous enterprise software sales management positions in Europe and North America, helping clients comply with risk and capital regulations (mainly Basel and Dodd Frank).

Ben holds a MSc in Computer Science from Cy Tech (Ex. EISTI).

Edward Probst
Head of Strategy, Regulatory Solutions

Ed Probst is the Head of Strategy for Regulatory Solutions. Since joining AxiomSL in 2010 he has been instrumental in establishing AxiomSL as the industry leader for risk and regulatory reporting.

Ed previously served as Chief Product Officer for AxiomSL and was responsible for Product Strategy, Market Strategy, Engineering, Quality Assurance and Pre-sales. Before assuming the role of CPO, Ed was General Manager of North America, where he was responsible for Product, Sales, Pre-Sales, Services and Support for the region.

Having spent more than 15 years in the FinTech sector in various leadership roles, Ed brings hands-on experience in technology, regulatory reporting and risk management to the organization. Prior to joining AxiomSL, Ed spent more than a decade in RegTech focused on data, risk and regulatory.

Ed holds both a BSc in Mathematics and an MBA in Finance and Economics from Baruch College.

Gil Guillaumey
Head of Strategy, Capital Market Solutions

Gil Guillaumey joined Calypso in 2018 as the Head of Strategy for Capital Market Solutions to oversee pre-sales, go-to-market, and product marketing activities for Calypso’s solutions.

Prior to Calypso, Gil spent three years as Head of Strategy at Ullink, four years as Head of Pre-sales at Murex, and 10 years at Moody’s Analytics, where he oversaw the Fermat Regulatory Calculation and Reporting product suite’s European sales & pre-sales teams. Gil began his career at Accenture, where he managed application development teams for the TMT business line.

Gil holds a MSc in Computer Science from Centrale-Supelec.

Karoline Raets
Chief People Officer

Karoline Raets joined the newly formed AxiomSL and Calypso entity in August 2021 as Chief People Officer, overseeing HR tools & systems, talent acquisition, employee engagement, Internal/international mobility, onboarding, referral and loyalty rewards programs, performance & talent management, job leveling & titling, reward strategies, executive coaching, DE&I, ESG.

Karoline has a diverse background in Human Resources, Internal Communications, Marketing, Public & Investor Relations. She’s been working in the Fintech industry for the last 22 years. Prior to Calypso/AxiomSL Karoline served as Chief People Officer at Itiviti recently acquired by Broadridge, previously she was CHRO at Ullink (acquired by Itiviti in 2018). During her time at Sungard/FIS she was in charge of the company’s global Talent & Performance strategy and implementation.

Karoline holds a Bachelor of arts in Marketing & Communications from Hoger Handels & Talent Instituut.