Meet the Team

Get to know our leaders.

Tim Geannopulos

CHAIRMAN & CHIEF EXECUTIVE OFFICER

Tim’s passion for the convergence of capital markets and technology has driven him throughout his career.

Previously contributing 15 years with the company, Tim was instrumental in the advancement, proliferation and international adoption of Trading Technologies’ trading software, ultimately serving as executive vice president, global head of sales. Following that, he was co-founder and president of Neurensic, a company TT later acquired.

Tim returned in 2021 as Chairman of the Board and CEO to lead the company and oversee TT's next chapter of growth and expansion.

Tim holds a degree in economics and political science from Principia College and a J.D. from Northwestern University School of Law.

Farley Owens

PRESIDENT

Highly experienced in both trading and technology, Farley possesses a deep understanding of capital markets and the needs of customers.

As President, Farley Owens oversees all day-to-day operations of the company, specifically driving the execution of the company’s objectives to fuel growth.

He previously served as Head of Product Marketing and EVP Product Management and Marketing. Prior to joining TT, Farley traded on the floor of the Chicago Board of Trade and ran operations for an electronic trading group. He began his career with IBM.

Farley received his undergraduate degree in computer engineering from Mississippi State University.

Elise Fleischaker

EVP MARKETING

Elise has spent her career helping technology companies drive awareness, pipeline and revenue growth through marketing.

As EVP Marketing, she leads TT’s global marketing organization, with responsibilities that include brand management, marketing communications, go-to-market strategies and demand generation. She also is the executive co-sponsor of TT’s DEI committee.

Previous to joining TT in 2003, Elise was with Ketchum/Corporate Technology Communications, Datamax Corporation and Zebra Technologies. She also served two terms on the Illinois Technology Association Board of Directors.

Elise received her undergraduate degree in public affairs and mass communications from Indiana University.

Roger Mills

CHIEF FINANCIAL OFFICER

Roger Mills has a passion for detail that has driven him throughout his entire career in finance.

As Chief Financial Officer, Roger is responsible for all aspects of Trading Technologies’ financial operations and venture investments. Previously Roger served as EVP Finance and oversaw global financial reporting, planning, taxation, treasury and procurement. Prior to that, Roger served as the company’s controller.

A Certified Public Accountant, Roger has worked in financial positions with privately and publicly held companies including HealthStar and Oxford Health Plans.

Roger, who is a native of South Africa, received his MBA and undergraduate degree in International Business from the University of South Alabama in Mobile.

Bharat Mittal

CHIEF TECHNOLOGY OFFICER

Throughout his decades-long career, Bharat has immersed himself in all aspects of software engineering, from software design, development and network engineering to testing and deployment.

Today as Chief Technology Officer, Bharat drives TT’s overall technology strategy. He oversees all aspects of TT’s global engineering enterprise encompassing software engineering, quality engineering, and network and systems engineering. He previously served as EVP Engineering and Architecture.

Prior to joining TT, Bharat held software engineering roles at Siemens Healthcare, Corel Corporation and Wipro.

Bharat, who is a native of India, received his undergraduate degree in computer science from National Institute of Technology Karnataka.

Philip Ramus

CHIEF INFORMATION OFFICER

Philip is adept at implementing the latest technology trends to bolster day-to-day operations, streamline business functionality and maximize productivity.

As CIO, Philip oversees all aspects of TT’s global technology implementation and management, with responsibility for leading the operations, security and IT organizations.

Philip previously served as VP Infrastructure. A UK native, he started his TT career in London before relocating to Chicago in 2005. Prior to that, he worked for Sakura Bank, now known as Sumitomo Mitsui Banking Corporation (SMBC).

Philip received his undergraduate degree in computer science from North West Kent College of Technology.

Mike Ryan

CHIEF LEGAL OFFICER

Mike Ryan has critical expertise in intellectual property, software agreements and contracts while understanding the needs of the business.

As Chief Legal Officer, Mike is responsible for all legal matters affecting the corporation, including licensing, service and hosting agreements, consulting agreements, employment, property leasing and vendor contracts. In addition to his legal responsibilities, Mike manages TT’s Administration, Human Resources and Facilities departments.

Before joining TT, Mike was an attorney at Oppenheimer, Wolff and Donnelly, where he was a member of the insurance and general litigation departments.

Mike is a graduate of Kalamazoo College and DePaul University College of Law.

Guy Scott

EVP GLOBAL HEAD OF SALES

Guy Scott is a problem-solver who honed his global sales skills over three decades.

As Trading Technologies’ EVP Global Head of Sales, Guy oversees the company’s worldwide sales organization and customer success organizations and leads business development and commercial partnerships. Previously as Managing Director Sales Americas, he oversaw sales operations throughout the Americas, serving as the primary lead on sell-side relationships and buy-side sales.

Prior to TT, Guy worked in London and Chicago for FutureSource.

Guy earned an undergraduate degree and a post-graduate certificate from Leeds Metropolitan University.

Jason Shaffer

CHIEF PRODUCT OFFICER

Jason builds product solutions with learned insight and a dedicated focus on the trader.

As head of product management, Jason leads implementation of TT’s various lines of business for the trading platform, infrastructure and data. He also spearheads the strategy for new product development, product integration and experience for client-centric solutions.

Previously, he served as Line of Business manager for execution services and also led a group within TT's in-house trading entity focused on algorithmic commodity trading.

Jason graduated from the University of Michigan with a degree in computer science and an MBA from the University of Chicago Booth School of Business.

Melissa Waitz

CHIEF OF STAFF

Melissa focuses on building high performing teams and a culture of continuous improvement.

As Chief of Staff, Melissa identifies areas where change is needed to optimize our teams, workflows and tools for greater organizational effectiveness. She guides the executive team and inspires engagement in our teams to drive change on product delivery, processes and strategic issues throughout the organization.

Prior to holding various product and engineering project management positions at TT, she served as a Consulting Manager at Accenture in Financial Services and Healthcare.

Melissa has an undergraduate degree in business administration from Loyola University of Chicago.

We set the standard for professional trading platforms

Jessica Duggins

VP TEST ENGINEERING

Daniel Feldman

VP NETWORK AND SYSTEMS ENGINEERING

Christen Harvey

VP PLATFORM SERVICES

Mark McClowry

VP BUSINESS INTELLIGENCE

Elmedina Musinovic

VP SITE RELIABILITY ENGINEERING

Ashley Reiner

VP HUMAN RESOURCES

Bobby Revis-Pyke

VP CUSTOMER SUPPORT & IMPLEMENTATION

Scott Rubik

VP MARKET CONNECTIVITY

Julie Schraith

VP SECURITY & INFORMATION TECHNOLOGY

Shridhar Sheth

VP PLATFORM SERVICES

Rob Spiegel

VP PERFORMANCE & DEPLOYMENT

Steve Stewart

VP & MANAGING DIRECTOR - EMEA

Greg Szeszko

VP TT CONNECTIVITY

Michael Walsh

VP TRADING PRODUCTS ENGINEERING

David Widuch

VP EXECUTION SERVICES