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Michael Lewis

@michaellewis3

Senior software engineer at CME Group who migrated 500+ COBOL applications from Tandem to Linux.

United States
Message

At Chicago Mercantile Exchange (CME Group), I designed and implemented COBOL applications for electronic trading systems. I also contributed to the Globex electronic trading launch.

I migrated 500+ COBOL applications from Tandem to Linux, saving approximately $1M annually. I also integrated NYMEX and COMEX systems into the CME platform with zero downtime.

At Informatic Technologies (Contractor – CME Group), I supported the CME Price Reporting System for market data entry, dissemination, and display. I developed, tested, and debugged isCOBOL applications on Linux integrated with Java systems, and supported new product launches through QA validation and test automation.

Experience

Work history, roles, and key accomplishments

IT

Senior Software Engineer

Informatic Technologies

Jan 2024 - Mar 2025 (1 year 2 months)

Supported the CME Price Reporting System for market data entry, dissemination, and display. Developed, tested, and debugged isCOBOL applications on Linux integrated with Java systems.

TK

Senior Software Engineer

TradeHelm / Kopius

Sep 2019 - Jan 2024 (4 years 4 months)

Delivered COBOL-to-Java hybrid development for financial market applications. Improved system stability through debugging, troubleshooting, and performance tuning.

Chicago Mercantile Exchange (CME Group) logoCG

Senior Application Developer / Software Engineer

Chicago Mercantile Exchange (CME Group)

Jan 2001 - Dec 2014 (13 years 11 months)

Designed and implemented COBOL applications supporting electronic trading systems. Conducted migrations and integrations in high-volume trading environments.

Education

Degrees, certifications, and relevant coursework

OC

Olive Harvey College

Computer Science Studies, Computer Science

Pursued computer science studies at Olive Harvey College.

MT

MicroTrain Technologies

Certified Scrum Master, Scrum

Earned the Certified Scrum Master certification from MicroTrain Technologies.

Tech stack

Software and tools used professionally

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