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NASDAQ OMX
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October 2011 to Present
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Senior Technical Specialist
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- Apache Cassandra and Hadoop
- NoSQL systems in a financial data setting
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Digital Globe
Geospatial Imaging
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April 2010 to October 2011
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Senior Software Engineer
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- Online search and delivery of satellite imagery through REST-like web services and Google Earth (KML)
- Large daily data processing and management from three satellites, many terabytes of data processed per day
- Millions of HTTP mapping requests per day
- Open Geospatial Consortium (OGC) mapping APIs and implementations (WFS, WMS, WMTS, WCS)
- GeoServer customization to interface with DG's imagery catalog and image composition software
- Improved system monitoring and manageability through JMX and unified tracking of request processing
- Postgres and PostGIS geometric database extensions, in-memory geometry caching and intersect processing
- Many performance and scalability improvements to this legacy system through both low-level and architectural redesign
- High traffic network log aggregation though a custom Log4J TCP log appender using NIO, including aggregating relays
- Secure environment software hardening for the National Geospatial-Intelligence Agency (NGA)
- GWT 2.3 GUI and service architecture and implementation
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Mocapay
A mobile payments startup
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October 2007 to Feb 2009
October 2009 to April 2010
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Senior Software Engineer
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- JBoss 4.x, Spring 2, iBATIS
- Online payment systems, point-of-sale integrations, ISO8583 transaction processing and encoding
- High-volume binary and XML protocol handlers for point-of-sale payments authorization
- SMS aggregator APIs, mobile messaging (Air2Web, Sybase365).
- Authorize.net Credit Card API
- Various payment processing APIs (FirstData SVDot, etc)
- J2ME and Android development, including MIFARE RFID prototype work.
- PCI compliance
- Terracotta clustering
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FTEN
Financial services
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Feb 2009 to October 2009
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Senior Software Engineer
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- High-speed networking and transaction processing (1,000's of messages per second)
- Sub-millisecond timing and responses
- Real-time risk analysis for black-box trading customers
- Multi-currency, foreign stock exchange API experience
- Core java, synchronization, concurrency APIs
- NIO for TCP and uni-/multicast UDP networking with very high data rates
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Rally Software
An Agile Methodologies and Tools vendor
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May 2005 to October 2007
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Senior Software Engineer, Team Lead
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- Agile development methodologies, SCRUM, XP, etc
- JBoss 4.x, Tomcat, Spring 2
- WebServices (SOAP and REST). Developed a custom SOAP and REST web services
framework (custom SOAP endpoint, etc) driven by metadata to expose an internal object model as
a series of web services interfaces. The framework supports both SOAP and
REST using the same back-end request handling code.
- Some C# .NET experience (prototypes for web service clients)
- Developed "berzerker", an extensible high-scale load testing application for web applications and web services.
- ORM Persistence (OracleTopLink 10, Oracle Server 10gR2), Oracle performance tuning (Quest Spotlight, etc)
- Lead a complete re-write of the persistence layer for Rally's hosted application.
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BEA Systems
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On contract: June 2004 to October 2004
October 2004 to May 2005
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Senior Software Engineer
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- WebLogic Portal 9.0 Internal Framework
- Persistence layer development (Oracle, Sybase, DB2, PointBase)
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StorePerform Technologies
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June 2002 to May 2004
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Senior Software Engineer
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- J2EE APIs (EJB, JSP, Servlets, JDBC, JNDI, JMS, etc)
- Retail-oriented parallel workflow (BPM) systems
- IBM WebSphere 4 and 5
- WebLogic 7.0 and 8.1
- JBoss 2.x and 3.x
- IBM DB2, MS SQLServer, PostgreSQL
- Clustering
- Web Services
- Extensive performance tuning -- over 140,000 simultaneous users in a 24x7 enterprise environment.
- Offshoring experience in Bangalore, India (lived there for three months) including interviewing, hiring, training, mentoring, etc.
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BEA Systems - Accelerated Development Center
A Professional Services development group
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February 2001 to June 2002
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Senior Consultant
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- J2EE APIs (EJB, JSP, Servlets, JDBC, JNDI, JMS, etc)
- Architecture (design and evaluation)
- Training (Java, J2EE, WebLogic, etc)
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Protomatter Holdings, LLC
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1999 to Present
(currently inactive)
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Owner, Principal Consultant
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- Independant contract work.
- Contract work through/for BEA Systems with various clients.
- J2EE APIs (EJB, Servlets, JSP, JDBC, JNDI, JMS, etc)
- Architecture (design and evaluation)
- Training (Java, J2EE, WebLogic)
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