Ariel Yankilevich
President and CEO; Co-Founder

Ariel is the main architect and designer for Thetica Systems. He combines over fifteen years of hands on experience in software architecture and programming with a background in electronics and mathematics.

Ariel has worked with co-founder Jack Broad for over a decade, delivering top quality software solutions to top Wall Street institutions. He has strong knowledge of structured products and is expert in working with the Intex API.

Early in his career as an Israeli Naval officer, he ran their personal computing department and was in charge of the procurement and introduction of new pc technologies for the Israeli Navy’s computer center. More recently he has designed and programmed complex analytics, trade capturing and processing systems for the ABS/CDO/CMBS markets and has extensive knowledge and experience with Intex data, Bloomberg, LP, ABS.NET, Trepp, and more. He is expert at C#, ASP.NET, VB, XML, SQL, etc.

Greer Parrish
Chief Administrative Officer

Greer has over 25 years of executive experience in administration, strategic analysis and execution, and board/regulatory relations. She has previously worked in the wholesale financial institution, software and non-profit industries.

Diti Yankilevich
CFO

Diti attended the University of Haifa where she majored in Human Services. She then worked in the import business for a top Israeli company. Here in the US, she handled the finances for a NJ based technology company before joining Thetica Systems as CFO.

Jack Broad
Co-Founder

Jack brings over twenty years of experience to Thetica Systems, designing and building systems that address the needs of Wall Street dealers and traders. He has worked in some of the most demanding markets, including Convertible Bond and Risk Arbitrage and he was there during the explosion of the Corporate CDS market and the start of the CDS on ABS market. Jack has designed and built full blown trade capture and valuations systems for two major Wall Street dealers which have become integral to their operations and risk assessment for the ABS markets at these firms.

He is an expert business analyst who works very closely with end users. Jack has been a pioneer in rapid application development and agile technologies throughout his career. His focus has always been on getting sound technology solutions rapidly into place in fast changing markets and in assisting clients to maximize their returns. Whether it’s one of the largest international banks or an elite hedge fund, Jack speaks his client’s language. He has established a stellar reputation for his high level of understanding of client needs and his ability to respond rapidly with workable solutions.

Jack’s background includes work at Bear Stearns, Barclay’s and Citicorp.

John Schaffner
Director of Production

After graduating from Stanford University with a degree in Physics, John did further graduate studies in Signal Processing, Optics and Robotics. His early career was in the aerospace industry, working on F-16 and C-5 avionics. Once in New York City, John worked for several Wall Street firms. His experience crosses VAR, Realtime Data Processing and Enterprise Trading Systems.

Ed McCloskey
Head of Back Office Production

Most of Ed’s 30 years were spent helping financial companies develop workable computer solutions. His financial tech experience spans many years at such companies as Barclays, Merrill Lynch, Bear Stearns and Citicorp. Ed earned an MS in Electrical Engineering and Computer Science from University of Delaware and an MBA from University of Kentucky.

Frank Silvestro
Senior Engineer

Frank earned a BS from the NY Institute of Technology. He has designed software systems for several major corporations using his skills in MS Excel/VBA, MS Access/VBA, Joomla, SQL Server, C++, Windows NT, VMS, Unix, Pascal, FORTRAN, COBOL, and more. Frank has successfully completed consulting assignments with such financial companies as Goldman Sachs, Transvik, Dow Jones, NY Mercantile Exchange and American Express.