Baker previously worked at Hi-Tech Media, which specialises in bar and golf outdoor media, for 10 years.
He quit his sales role to pursue his dream of forging a career with his culinary skills.
In the fight to be crowned the 2010 MasterChef, Baker has seen off thousands of other hopefuls in the reality cookery show.
In tonight's final Baker will be hoping for a repeat of his quarter-final victory when he wowed judges with his speciality duck dish involving 20 herbs and spices.
In the last instalment of the three-part final, Baker and his two rivals will travel to multi-Michelin-starred restaurants in France, Italy and Holland to cook lunch.
In previous rounds Baker and the other finalists had to create their own menus for paying customers and prepare a dish by Alain Ducasse, the Michelin-starred French chef.
Rob Sutton, joint managing director of Hi-Tech, said: "When interviewing Dhruv 10 years ago, he said his dream was to make it as a chef in a top London restaurant.
"It was a bizarre thing to say to a prospective employer in the media industry, but it showed how much cooking meant to Dhruv.
'MasterChef: The Final Three' is on BBC One at 9pm this evening.
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