Build the world’s premier system for capital markets data management.

Provide our clients with enhanced market data and proprietary software to seamlessly utilize this data across their organizations.

Executive Team

Patrick Flannery


Patrick is the Co-Founder and Chief Executive Officer of MayStreet.  Prior to MayStreet, Patrick was the Director of Engineering at NYC-based equity options market maker Sumo Capital, and the Senior Engineer at Volant Trading, a multi-asset proprietary trading firm.  He has unprecedented experience in building advanced trading technology for highly scalable low-latency applications in equities and derivatives markets.  Originally from Milwaukee, WI, Patrick earned his BS in Computer Science from the University of Colorado at Boulder.

Michael Lehr


Michael is responsible for all aspects of software development, data operations and processes at MayStreet.  Mike has a breadth of experience managing a wide range of technology groups.  Most recently, he served as the VP of Engineering at Organic Motion, a leader in computer vision and computer graphics.  Prior to that, Michael held a variety of technology leadership positions at Sarnoff Research Labs and Lockheed Martin.  Originally from Tarrytown, NY, Mike earned his BA in Computer and Cognitive Science from the University of Rochester.  He also holds a Masters of Science in Engineering from the University of Pennsylvania.

Jonathan Rand


Jonathan Rand was the CFO of Straight Path Communications Inc. (NYSE American: STRP), growing the company from its spin off in 2013 through acquisition by Verizon in 2018 for a more than 30x return. Previously, Jonathan was the President and COO of Organic Motion, an innovative VC-funded startup in computer vision technology, where Jonathan was named Innovator of the Year by Popular Mechanics in 2008. Jonathan also co-founded Indigo Capital Advisers, a management consulting firm that provides sales and financing strategies and execution to tech startups, and previously spent nearly 10 years in key positions at IDT Corporation and its Net2Phone affiliate. Jonathan earned his B.S. in Economics from the Wharton School of the University of Pennsylvania.

Dave Breau

CSO & General Counsel

Dave was General Counsel of Straight Path Communications Inc. (NYSE American: STRP), where he led the company’s efforts to successfully resolve major government enforcement actions and shareholder litigation, and ultimately oversaw a public bidding war between Verizon and AT&T that ended with Verizon’s acquisition of the company. Previously, Dave spent nine years as a litigator at Sullivan & Cromwell LLP and Sidley Austin LLP. Dave represented clients through all phases of various commercial and securities litigations and government investigations. Dave earned his J.D. (cum laude) from Duke University School of Law, and a B.S. in Mechanical Engineering with high honors from Johns Hopkins University

  • Jace Kohlmeier

    Citadel, ex-Head of High Frequency Trading Fixed Income, Currencies and Commodities

    Jace is a trading industry veteran.  He was previously Head of High Frequency Trading, Fixed Income Currencies and Commodities at Citadel, and was as co-founder and President of Teza Technologies.  After four years in the non-profit sector as Dean of Data Science at Khan Academy, he is an active entrepreneur and investor in both electronic and private markets.



Engineering Culture

MayStreet is built on a thriving engineering culture. Founded by longtime developers with trading experience, we view markets through a technologist’s lens. Our team of developers is valued at the highest level of the organization. MayStreet’s software is designed from the ground up with a clear, well-maintained code base that is easy for good developers to program and further develop. With software engineering at its core, MayStreet recognizes and rewards the incredible importance of top engineering talent.

Job Postings

We’re looking for C++ big data developers to focus on using our fintech firm's flagship product, Bellport™, to interpret, sort, index and compress global capital market data.

We're looking for an outstanding QA engineer who is committed to the lifecycle of code quality, regression and performance testing.

We're looking for passionate and enthusiastic problem-solvers with an interest in capital markets data to join us as we continue providing technology innovation and support to the world’s leading global capital markets companies.

We're looking for a Front-End Developer who will be responsible for design, implementation and support of our system administrator-facing tools that invoke platform configuration changes and system support routines in a fast-paced environment.