The Connamara Story

Founded in 1998 and rooted in the capital markets world, we’ve grown from a single employee in Chicago to a leading custom software development company serving a global clientele. An early adopter of Agile and a co-originator of QuickFIX, our longevity is a testament to our engineering expertise and deep understanding of trading and market structure.

Solutions From Trading Technology Experts

Founder Jim Downs combined his time spent on the floor of the Chicago Board of Trade and Chicago Board Options Exchange with his early software development and Agile knowledge to form Connamara. Our open outcry trading legacy is something few custom software development companies can claim. Being original capital markets software creators means we speak the language of our customers. We know how technology can bridge the gap between their business goals and today’s fast-paced financial world.


Honesty | Transparency | Integrity | Curiosity Mutual Respect | Inclusivity | Giving Back

Connamara is in constant pursuit of living the values we espouse. From the way we treat our clients to the way we treat our employees and by giving back to our capital markets community. We proudly conduct our business with integrity, honesty, fairness, and transparency. We take inclusivity, respect, and curiosity seriously. And we give back to fellow developers by sharing our knowledge with open-source projects.

Originators of QuickFix

Connamara is a recognized leader and pioneer in establishing the FIX Protocol – which has become the de facto standard for electronic communications between financial institutions. As co-authors and official maintainers of the open-source project QuickFIX, we offer a broad range of support and integration services to enhance the core QuickFIX project to include new functionality. We also provide design and implementation services for applications that embed the QuickFIX library, including drop copy adapters, market data adapters, order routing adapters, FIX to FIX translators, and FIX to storage projects. Learn more at

An Exchange Platform & Matching Engine Built for the Future of Trading

Accelerate your time to market or smooth the transition from legacy exchange systems with EP3TM: an advanced exchange platform and matching engine built for speed, flexibility, and scale.

Find out more at


Meet our capital markets technology experts.

News & Insights

Company news, press, and insights from our team.


Awards and industry recognition.

Connamara by the Numbers

25 +


1000 +


10,000,000 +


40,000,000 +


Ready to work with us?

Join problem-solvers, independent thinkers, and innovators at Connamara. We’re a 100%-remote, U.S.-based team and always looking for exceptional talent.

We meet you where you are and take you where you want to go

See how custom software solutions from Connamara can accelerate your business objectives.