Principal Software Engineer
Current
Feb 2024 - Present
AeroLeads people directory · profile
Mark Rohan Email & Phone Number
Principal Software Engineer @ Square | ex-CashApp, Riot Games, Federal Reserve
at
Square
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✓ Verified July 2026
3 data sources
Profile completeness 86%
Current company
Role
Principal Software Engineer @ Square | ex-CashApp, Riot Games, Federal Reserve
Location
Fredericktown, Missouri, United States
Who is Mark Rohan? Overview
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Quick answer
Mark Rohan is listed as Principal Software Engineer @ Square | ex-CashApp, Riot Games, Federal Reserve at Square, based in Fredericktown, Missouri, United States. AeroLeads shows a matched LinkedIn profile for Mark Rohan.
Mark Rohan previously worked as Principal Software Engineer at Square and Staff Software Engineer at Cash App. Mark Rohan holds Bachelor Of Science, Computer Science from Missouri State University.
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Square
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Profile bio
About Mark Rohan
Specialties: Application ArchitectureWeb DevelopmentObject Oriented DesignJava 1.5 / 1.6Spring Framework 3.xSpring WebFlow 2.xHibernate 3.xWeb Services (SOAP)JBoss EAP 5.1WebLogicWebSphereHTMLCSSJavaScriptXML
Current workplace
Mark Rohan's current company
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15 roles
Mark Rohan work experience
A career timeline built from the work history available for this profile.
Staff Software Engineer
Apr 2022 - Jan 2024
Staff Software Engineer
Jan 2016 - Feb 2022
Principal Software Architect
Currently immersed in an intensive effort to analyze, understand and document a large-scale J2EE based system supporting the accounting functions of the United States Treasury. This effort is being undertaken in order to prepare my team to take ownership of the application, including development and support duties for the existing code base as well as incorporating new functionality while modernizing both the design and implementation of the system as a whole.
Apr 2012 - Jan 2016
Web Architect
Apr 2011 - Apr 2012
Software Engineer
Dec 2004 - Apr 2011
Technical Lead/Developer - Pharmacy Of The Future System Modernization Project
• Integrated new applications into an existing BPM workflow for home delivered pharmaceutical prescription verification and delivery• Designed and built a multi-threaded order management framework responsible for propagating orders through phases of the enterprise BPM workflow• Developed a shared library of code providing a foundation for multiple Java-based web applications• Mentored multiple sub-project teams on open source tools and best practices established by my team with the initial application in the Pharmacy of the Future application suiteToolset: Spring Framework, Spring WebFlow, Hibernate, Maven, Hudson Continuous Integration Server, FileNet, JMS, MQSeries, WebSphere Application Server, Mule Enterprise Service Bus (ESB)
May 2009 - Dec 2010
Software Engineer
• Developed J2EE web applications supporting the organization of government departmental account organization and monetary transaction reporting• Designed and developed a SOAP-based web service which efficiently handled large volumes of government financial transaction reporting data• Analyzed emerging open source toolsets for recommendation to and by the architecture team• Mentored development teams in new technologies mandated by the architectural teamToolset: Java 1.5, Spring Framework, Hibernate, Ant, Cruise Control Continuous Integration Server, JMS, SOAP, JSF, WebLogic Application Server, Oracle
Dec 2004 - May 2009
Senior Java Developer
Aug 2003 - Dec 2004
Senior Java Developer
Ciber
Aug 2003 - Dec 2004
Senior Java Developer
Nov 2002 - Aug 2003
Senior Java Developer / Architect
Aug 2001 - Nov 2002
Senior Java Developer
Core Express
Mar 2001 - Aug 2001
Senior Java Developer
Sep 1996 - Mar 2001
Senior Java Developer
Sep 1996 - Mar 2001
1 education record
Mark Rohan education
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Missouri State University
FAQ
Frequently asked questions about Mark Rohan
Quick answers generated from the profile data available on this page.
What company does Mark Rohan work for?
Mark Rohan works for Square.
What is Mark Rohan's role at Square?
Mark Rohan is listed as Principal Software Engineer @ Square | ex-CashApp, Riot Games, Federal Reserve at Square.
Where is Mark Rohan based?
Mark Rohan is based in Fredericktown, Missouri, United States while working with Square.
What companies has Mark Rohan worked for?
Mark Rohan has worked for Square, Cash App, Riot Games, Federal Reserve Bank Of St. Louis, and Centene Corporation.
How can I contact Mark Rohan?
You can use AeroLeads to view verified contact signals for Mark Rohan at Square, including work email, phone, and LinkedIn data when available.
What schools did Mark Rohan attend?
Mark Rohan holds Bachelor Of Science, Computer Science from Missouri State University.
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