Current CV as of 8/2017

1. 201 Stout Road
Maple Glen, PA 19002 THOMAS A. DISARLO
(267) 567-5524
tdisarlo@paragontechsolutions.com
OBJECTIVE
Obtain a consulting or full-time position in enterprise, solution, or application architecture and
design, preferably focused on cloud computing. Alternatively, leverage my experience in refactoring
legacy systems to lead progress and right-sizing of development teams to deliver service-based
platforms.
SUMMARY
Results-oriented technology professional with twenty-nine years of proven experience in all aspects of
application and systems software architecture and development.
I currently serve as Director of Technology Architecture and senior software engineer at Paragon Technology
Solutions, a technology consulting, software development, and transaction processing company focused on
the financial services industry.
Expertise and focus includes Amazon Web Services Solutions Architecture, ATM, POS, debit/credit/prepaid
card authorization and management, merchant acquirer processing, payment and settlement applications,
development of high-volume, payment-related transaction processing and authorization software, and
design and implementation of fraud analysis systems.
Additional experience includes technology platform evaluation and analysis; database architecture and
modeling; database administration; systems and application architecture, design, development, and
implementation; vendor evaluation, selection, and relations, M&A due diligence technology assessments
(primarily for Silver Lake Partners, LLC), and business and payment systems analysis and integration.
Managed and motivated a skilled development team in the deployment of several mission-critical platforms
designed to support and generate significant revenue for top 20 U.S. banks and large third-party processing
businesses.
Significant Internet/Intranet/network platforms and related protocols experience. Particular expertise in
Enterprise and Technology Architecture. Current with EA Enterprise Architect. AWS certification pending for
Solution Architecture, Big Data, Security, and DevOps.
Current hands-on experience in Java 8, Maven, Git, Jersey, Spring Boot, REST Web Services, ESB design and
implementation, Atalassian Agile Suite, Microsoft C#.NET/WCF/WF/EntityFramework 6/Web Services
development and .NET and Java enterprise design and implementation.
Significant experience in consulting on security issues relating to payments processing, banking, transaction
processing, image exchange, data encryption, and the Internet.
ACCOMPLISHMENTS
• Co-founder, Enterprise Technology Architect and software engineer for Paragon Technology Solutions,
Inc., a technology consulting, software development, and transaction processing service provider
specializing in the ATM, POS, VAT refunding, and credit/debit/prepaid/loyalty card industries. Served for
10 months as lead designer, developer, development manager, and Payments system relationship
manager for one of Paragon’s key international clients, Global Blue GmbH. Previously served as lead
designer and developer of several software and database platforms for other Paragon clients such as
Fiserv, Maverick Network Solutions, Inxent Corporation, Denarii Systems, and others. Also provide a
variety of technology consulting services to Paragon’s clients and their downstream customers.

2. • Recently completed an assignment with YapStone, Inc., a payments processor for Expedia/HomeAway.
Architected the overall design for a distributed payments-processing system to replace a highly-
verticalized suite of heterogeneous applications. Became lead developer on critical-path ESB-based
routing and payments authorization components.
• Served as an enterprise architect and lead developer for Global Blue, GmbH, a Sliver Lake Partners
company, the leader in VAT refunding services worldwide.
• Architected and was lead developer for custom software for ATM and POS transaction authorization,
prepaid and debit card management and authorization, settlement and ACH services, client billing,
interactive voice response applications, and several web portals for clients interfaced to First Data,
Columbus Data Services, Visa, MasterCard, and other EFT gateways and card schemes.
• Served as designer and lead developer on an enterprise middleware and database repository project for
Wachovia/Wells Fargo. Designed and developed mission-critical, high-volume middleware solution for
an IBM AIX-based messaging-driven system for the requesting, staging, delivery, and distribution of
17,000,000 check images daily. Developed Wells Fargo’s entire Subpoena Request Fulfillment System.
• Served as technology architect for a large third-party-processing venture, Quest Point, LLC, undertaken
by First Union Bank. Was responsible for design and development of numerous high-volume
transactional and delivery solutions. Also was responsible for design and delivery of PC workstation
products that were central to the success of the third-party check, image, credit card, and lockbox
processing products.
• Intimate knowledge of and first-hand experience with EFT-related message and file formats including
ISO8583, ACH, EDI, and XML-based standards. Intimate knowledge of Diebold and NCR ATM hardware,
emulation, message format and run-time environments. Vast experience in international transaction
processing and currency conversion applications.
• Designed and developed hardware-to-back-end solutions for a major ATM network, including branch
card issuance products, terminal and workstation products, low-level interfaces for PIN pads, card-
embossing equipment, ATMs, POS terminals and check readers.
• Broad and deep experience with database architecture, modeling, and schema implementation in the
Microsoft SQL Server and Oracle domains. Encyclopedic familiarity and currency with the Microsoft
Transact-SQL and Oracle PL/SQL languages and development and execution environments.
• Specialize in design and development of high-volume transaction processing software, especially focused
on the middleware functionalities of acquisition, switching, and authorization.
EMPLOYMENT
Director, Technology
Architecture Paragon Technology Solutions, Inc. 1998-2017
• Served as systems and enterprise architect, consultant, and lead technical resource and developer to:
YapStone, Inc., Walnut Creek, CA (Feb. 2016-Present)
• Worked as enterprise architect on design of a distributed-component payments authorization
system to replace a set of isolated “inline-coded” legacy applications.
• Worked as lead designer and developer on architecture of the distributed “NextGen” components
implemented in a dual AWS region environment, and as designer and Java implementer of the
mission-critical Authorization Gateway router.
• Most recently, I was responsible for analyzing needs and selecting a Managed File Transfer solution. I
was responsible for provisioning resources, specifying AWS DNS/Route53 and port access, Certificate
provisioning, and deployment in the US West/US East AWS regions.
Global Blue, GmbH, Vienna, Austria (Feb. 2014 – Dec. 2015)
• Worked with enterprise architecture team, using EA Enterprise Architect, to consolidate an

3. international VAT refund system to a single data platform, merging 36 distinct platforms to one.
• Lead designer and developer on integration to AliPay, part of the Alibaba consortium, as well as
several mission-critical currency and country implementations. Performed all tasks using SQL Server
data modeling and T-SQL development, C# and Java component design and development.
Fiserv, Inc. (Jun. 2008 – Jan. 2014)
• Primary systems architect for the Fiserv Prepaid Card product. Designed distributed transaction
processing platform for fault-tolerant, high-volume routing and authorizations.
• Served as lead developer for all components, including third-party interfaces to external payments
processors and authorizers (Green Dot, Authorize.net, etc.) Implemented in C#.NET, MSMQ, and SQL
Server.
Silver Lake Partners, LLC (Various dates)
• Performed due-diligence review and (later) technical consulting services for Silver Lake at Mercury
Payment Systems, Durango, CO
• Completed a due-diligence analysis of a potential billion-dollar acquisition of a spin-off from a
multinational semiconductor and telecommunications equipment company that designs and
markets wireless telecommunications products and services.
Wells Fargo (Sep. 2001 – Jun. 2008)
• Held primary systems architecture role in designing and developing all delivery, staging, and front-
end components for Wells Fargo’s Check Archive Delivery System, designed to archive 17 million
check images daily. Designed and developed APIs for interactive and bulk retrieval and implemented
the bank’s subpoena request system, using C#.NET, Java, IBM UDB, Apache Tomcat, and MS IIS.
Fair Isaac/Card Alert Services (Aug. 2000 – Aug. 2001)
• Served as enterprise and systems architect for a novel multi-financial-institution ATM fraud analysis
and alerting system based upon multilevel rules processing, geolocation analysis, and targeted
merchant categories. Developed complex SQL Server data model using erwin. Served as lead
developer of all analytics using Transact-SQL stored procedures and a sophisticated Visual Basic-
based analytic front-end. System still operated by Fair Isaac after acquiring Card Alert Services.
Cigna/Intracorp (Jun. 1998 – Aug. 2000)
• Analyzed Intracorp Patient Care Management System RDB-based RDBMS for conversion to Oracle.
Converted over 200,000 lines of C++ database stored procedures and 500 tables to Oracle and
PL/SQL.
RELEVANT TECHNICAL EXPERIENCE
• Enterprise Architecture using enterprise-level tools for several clients mentioned above, especially EA
Enterprise Architect
• Amazon Web Services – involved extensively in provisioning EC2, S3, EFS, RDS, VPN and VPC design,
stand-up, and configuration during my time at YapStone. Completing AWS Certification in Solutions
Architecture, Big Data, DevOps, and Developer in September, 2017.

4. LANGUAGES, PLATFORMS, FRAMEWORKS, AND TECHNOLOGIES
Recent experience (YapStone, Global Blue GmbH) in: Sparx Systems Enterprise Architect, Java, Spring Boot,
Swagger, Scala, AWS Lambda, Maven, Git, Jersey, Apache Kafka and Samza
Experience (Fiserv, Global; Blue GmbH, Wells Fargo) in: C#, T-SQL, PL/SQL, JavaScript, XSLT, REST Web
Services, , IBM MQ Services, MSMQ, Rabbit MQ, UNIX shell scripting, VB.NET, LISP, C++, C, AWS CodeStar
(and most major AWS services); IntelliJ; PostgreSQL; Enterprise Architect; Visual Studio; Microsoft SQL
Server; Oracle; Eclipse
EDUCATION
A Cloud Guru (Current)
• Completing AWS Certification courses for Solution Architect, Big Data, DevOps, and Developer
University of the Arts, Philadelphia, PA
Bachelor of Music/Artist’s Diploma (GPA: 3.9)
• Degree awarded in music performance and composition.
Received Artist’s Diploma in Violin Performance.
West Virginia University, Morgantown, WV
Master of Music/Performing Fellowship (GPA: 4.0)
• Degree awarded in Music Performance, Composition, Electronic and Computer Music.
• Toured extensively as a performing representative of the University
• Several compositions premiered at WVU during tenure there as performing fellow.
• Won competition to perform as soloist with Pittsburgh Symphony Orchestra
ADDITIONAL EXPERIENCE
Licensed Private Pilot with current FAA medical, 600 hours total, 60-hours instrument.
Classical Performing Artist with Vox Amadeus, with several solo recordings in the classical catalog.