Proprietor of Alan Wrigley Dotcom
2001 - present
Software development: consumer applications aimed mostly at the RISC OS desktop market. Photography: stock photography licensing, exhibitions, photography-based consumer products, documentary and art films. Music: film scores and music for commercial licensing. Web development: various online initiatives, mainly based around artistic activities or promotion of veganism.

Senior Technologist, The Kiss Principle Inc
1999 - 2001
Lead engineer on conversational interface software projects for interactive television. Developed chat clients, TV program guides, chat servers, data aggregation servers, script engines etc. Led and mentored a small team of junior engineers.

Contractor to Acorn Computers Ltd
1999
Developed application for interactive television project to display broadcast notification messages over TV and web pages.

Contractor to Acorn Computers Ltd
1998
Developed a C/C++ engine for an email client application to be used on network computers for a consumer deployment in Scandinavia.

Contractor to Netchannel USA
1997 - 1998
Developed modules and applications to improve the reliability and performance of the online services that Netchannel provided to RCA network computer users, and to gather and analyse data for use by QA and customer service teams.

Contractor to Network Computer Inc
1997
Led the development of an Electronic Program Guide (EPG) for network computers, in both C++ and HTML/JavaScript versions, for NCOS and Navio DTV client systems.

Contractor to Oracle Corporation
1996
Member of team porting Oracle Media Objects to Acorn set-top box for the AMUSE enhanced TV project in Europe.

Computer Journalist
1989 - 1996
Wrote hundreds of articles of both a technical and a general nature for magazines aimed at users of Acorn RISC OS systems. Also wrote many programs published on magazine discs to illustrate technical articles. Included spells as both Technical Editor and Editor of RISC User magazine. In 1992 wrote a book based on a series of programming articles by a colleague.

Proprietor of Calderdata
1984 - 1989
Developed and marketed computer software, mostly for Acorn's BBC Micro and RISC OS-based computers.

Freelance Photographer
1977 - 1984
Clients included Lufthansa, City of Cologne Tourist Office and numerous magazines.