A British ex-pat, Stewart has spent all his career working for US-based vendors including Burroughs (now Unisys), StorageTek (became Sun, now Oracle), Teradata (now NCR), and FileTek. He has been resident in Southern California since 1990.| WSI has been developing profitable Digital Marketing Solutions for businesses since the mid 1990s. | |
| WSI has a network of over 1,500 consultants in over 80 countries worldwide. | |
| WSI eConcepts has been serving the Southern California area since 2004. |