Chris Ryle - Employment History
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December 2001 - December 2002 Dataflex plc. (part time contract)
Support
for inherited Paxdata Voice over IP products and upgrade of the SNMP interface
for the Dataflex Voice over DSL, Internet Access Device (IAD) products.
October 2001 - July 2002 ISYS plc. (part time contract)
Development
of new Web Interface, using Oracle JSP and ASP, for the existing Keren product.
January 2001 - September 2001 Dataflex plc.
When
Dataflex bought Paxdata I accepted a permanent post as Development Manager in
charge of the Hemel Hempstead site. I developed a SIP (Session Initiation Protocol)
version of the Paxdata Voice over IP product and managed all other development
at the site, until Dataflex closed down the site.
Oct 1998 - December 1999 ISYS plc (part time contract)
I created
a totally new GUI interface to the Keren product using C++ Builder and Delphi,
accessing a remote Oracle database using Net8.
July 1997 - December 1999 Paxdata Networks Ltd. (contract full/part time)
I returned
to Paxdata as the Technical Director to help complete the development of their
range of ISDN Router products, and drive the development of additional hardware
and software features to complement this range of products. This included work
on new Kilostream Aggregate, Voice over IP and Frame Relay features.
August 1995 - June 1997 ISYS plc. (contract)
I returned
to ISYS to help with the conversion of their Keren product (see below), to use
an Oracle database. The code was written in Pro*C. During this contract I also
developed interfaces to third party data collection and scheduling systems.
November 1993 - July 1995 JET Joint Undertaking (contract)
During
this period I have been part of three main projects within JET:
- The development of a protection system, for the main magnetic
coils of the Torus vessel. This involved collecting approximately 150 analogue
signals from the plant, and checking every millisecond to see if a dangerous
condition was arising.
- I implemented an adaptive control algorithm on a VME 68030 processor board,
controlling the input of gas into the Torus.
- I implemented a second generation master timing system for JET that distributed
the master timing signals over a Fibre Optic distribution network.
- I developed some system monitoring screens for the above timing system
using Tk/TCL.
September 1992 - October 1993 ISYS plc. (contract)
I joined ISYS to assist in the development of a second generation Management
Information System for the printing industry, to replace their existing product.
The product handles the whole process from quoting a job, through stock control
to final invoicing and cost analysis.
While part of the project team I developed an item tracking system and an
external data collection system.
June 1989 - August 1992 Paxdata Networks Ltd.
I joined
Paxdata to take charge of the companies software development.
While working at Paxdata I was involved with the recruitment and training of further
software engineers to assist me with work on the following projects.
- Development of a Security and Network Management System for the companies
existing Modem product range.
- Development of the software to drive the companies new range of error
correcting Modems.
- Development of the software for the companies new range of Remote Ethernet
Bridges.
April 1987 - May 1989 Crosfield Electronics Ltd.
I joined
Crosfield Electronics to help complete development of a proprietary Fibre Optic
LAN product, and then to develop the FDDI based successor to it. Soon after
joining the project I became the software Team Leader following the departure
of my predecessor. From this point on I was involved in the recruitment of new
software engineers and the review of existing ones, together with all other
usual project management tasks.
October 1984 - March 1987 CASE Communications Ltd.
I worked
as part of a team developing the software for the company's X.25 Packet Switch
Exchange. This involved writing real time communications software and device
drivers in C and assembler.