Jon Warnke Consulting                                                             2007 -

 The BOC Group                                                                   

Strategic Marketing Director, Petrochemicals                                   2004 – 2007

Global Key Account Executive                                                       2002 – 2004

Nexant Chem Systems (previously IBM)

Senior Consultant                                                                       1996 – 2002 .

Shell International Chemical Company Limited 

Project Manager                                                                         1992 – 1995
Business Integration Manager                                                        1989 – 1992
Synthetic Chemicals Limited European Marketing Manager                   1987 - 1989

Shell Chemicals UK Limited

Business Manager, Fine Chemicals and Catalysts                               1985 - 1987
Product Manager, Detergents                                                        1980 - 1984

Shell Chemicals Ireland Limited, Dublin                                                                    

Polymers Representative                                                               1977 - 1980

Shell Chemicals UK Limited

 Commercial Assistant                                                                   1974 -1977