Chris Ryle - Employment History

Shafford Ryle Logo

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:

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.

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.