As a senior developer given a variety of projects intended to further the market reach of the Litespeed Web Server, the #4 web server by market share. Many of the projects are in production today and were developed individually or in small groups and include: Kubernetes Load Balancer, XDP as a performance enhancer, Node.js support, GeoLocation2, mod_security, an open source memcached with a number of unique properties, cgroups to avoid system over-commitment, OpenSSL certificate signing in… Show more As a senior developer given a variety of projects intended to further the market reach of the Litespeed Web Server, the #4 web server by market share. Many of the projects are in production today and were developed individually or in small groups and include: Kubernetes Load Balancer, XDP as a performance enhancer, Node.js support, GeoLocation2, mod_security, an open source memcached with a number of unique properties, cgroups to avoid system over-commitment, OpenSSL certificate signing in threads, PicoTLS support for BoringSSL, the Lua language and its use for Recaptcha. Show less

Agile team member A short-term multi-language transition of a principal backend real-time database system from Oracle TimesTen to Hazelcast (non-SQL database). Primarily a C++ 11 Linux project, Python and Java were used to transition the single tasking backend system to a scalable, multi-computer high performance switching system. Unit tests use Google test and Valgrind (memory validation tool). Originally intended to be a three month project, contract was extended several times until the… Show more Agile team member A short-term multi-language transition of a principal backend real-time database system from Oracle TimesTen to Hazelcast (non-SQL database). Primarily a C++ 11 Linux project, Python and Java were used to transition the single tasking backend system to a scalable, multi-computer high performance switching system. Unit tests use Google test and Valgrind (memory validation tool). Originally intended to be a three month project, contract was extended several times until the project was basically completed. Show less

Software development consulting.

As principal architect and senior open systems developer, I worked as the technical leader with an expanded group of developers, testers and support staff. See http://www.fdr.com/products/upstream for full details. Our customer base includes significant commercial organizations and governmental entities.As well as providing guidance to the full development team, my personal development projects include: • Creating and maintaining software designed to operate in a wide variety of… Show more As principal architect and senior open systems developer, I worked as the technical leader with an expanded group of developers, testers and support staff. See http://www.fdr.com/products/upstream for full details. Our customer base includes significant commercial organizations and governmental entities.As well as providing guidance to the full development team, my personal development projects include: • Creating and maintaining software designed to operate in a wide variety of customer environments. This required it to be extremely rugged and fault tolerant as well as high performance. • Upstream Reservoir non-z/OS storage server (2004-present). Comprehensive support for disk and tape systems with the existing clients. See http://www.fdr.com/products/reservoir for full details. • NDMP servers. This required a custom implementation of the XDR protocol to allow it to run cross-platform. • zLib compression with software and hardware support. • Software encryption support for both the client and Reservoir using AES based encryption. • Using multi-path SAN disk as a transport for data (with a simultaneous TCP/IP interchange for synchronization) as well as multi-path SAN tape (again using TCP/IP for control information) • IBM DB2 Database Agent (for Windows, Linux, AIX, z/Linux and other systems) • UNIX agents for Linux, z/Linux, AIX, HPUX, and Solaris. • Support for synthetic full backups where data from prior backups is merged with a “picture” of the system to create full backups as if every file was read. Could be run in parallel to produce the highest performance backups and restores with transparent inquiries that made the whole system visible. • Designed and implemented TCP/IP interface and inter-computer specifications.Most code was written in C or C++ for portability, with Java used as the front-end user interface. My responsibilities were primarily with the back-end but I did some of the Java code as well. Show less

I was the creator, principal designer and sole non-z/OS systems developer for the Upstream backup product. Product was written in C using the Windows and OS/2 API to backup DOS, Windows and OS/2 clients and servers to MVS mainframes. This required the creation of the architecture, underlying system access engine and user interface. Grew company from an idea to a small startup to a going concern. In its short history, Enterprise Data took Upstream from a basic file level backup product… Show more I was the creator, principal designer and sole non-z/OS systems developer for the Upstream backup product. Product was written in C using the Windows and OS/2 API to backup DOS, Windows and OS/2 clients and servers to MVS mainframes. This required the creation of the architecture, underlying system access engine and user interface. Grew company from an idea to a small startup to a going concern. In its short history, Enterprise Data took Upstream from a basic file level backup product to a full- featured server backup suite with support for IBM, Novell and Banyan LANs. Sales included a number of Fortune 500 companies worldwide.Assets purchased by Innovation Data Processing in November 1993. I was retained by Innovation Data Processing as principal architect and open systems developer. Show less

Initial PC developer for the XCOM product (now CA-XCOM). See http://www.ca.com. Responsible for the first sales of the product and facilitated its success as a significant player in the file transfer market to IBM mainframes. The product was sold to Legent, Inc. in 1991 and then to CA several years later. Customers remain all over the world. • Created a simple file transfer program in C in DOS to interface with XCOM on z/OS using SNA APPC. •As the product gained success converted the… Show more Initial PC developer for the XCOM product (now CA-XCOM). See http://www.ca.com. Responsible for the first sales of the product and facilitated its success as a significant player in the file transfer market to IBM mainframes. The product was sold to Legent, Inc. in 1991 and then to CA several years later. Customers remain all over the world. • Created a simple file transfer program in C in DOS to interface with XCOM on z/OS using SNA APPC. •As the product gained success converted the program into a much more complex product to act as a DOS TSR to allow it to be used by cooperating applications (with an SDK). Implemented the back-end, and user interface. •At the request of customers added OS/2 over a month (working at home) and got it into customer hands in time to make important sales. Show less

Senior developer, technical manager for a new back-office branch banking application. •Brought in to develop a local, in-branch, distributed LAN based system for a new clearance teller application. • Working with the clearance tellers came up with a design which met their needs. Implemented the design using database and other available tools. • Added support for communications throughout the branch using teller system engine developed by a 3rd party but to my specifications.… Show more Senior developer, technical manager for a new back-office branch banking application. •Brought in to develop a local, in-branch, distributed LAN based system for a new clearance teller application. • Working with the clearance tellers came up with a design which met their needs. Implemented the design using database and other available tools. • Added support for communications throughout the branch using teller system engine developed by a 3rd party but to my specifications. Sub-ledger, check-desk processing, terminal emulation and a variety of features were added. •The project grew to include a group of 15 developers working under my guidance until the technology could be absorbed into the existing z/OS based bank system. Show less

Architected a management reporting system using Personal Computers. • Built a full featured, bullet-proof data entry and keyed storage system. • Custom reports were built to meet the needs of senior managers who needed to monitor the business analysts. • Initially done on a contract basis but additional contract work was added as the system had sufficient success.