As you want to get the details of career after B.Tech Food Technology and the list of some of the best colleges so here is the information of the same for you:

B.Tech. Food Technology Employment Areas

Quality Assurance
Technical Sales
Production Management
Process and Product Development
Research and Development
Food Microbiologist
Food Standards Officer
Food Technologist

B.Tech. Food Technology Job Types

Food Scientist
Process Engineer
Food Researchers in Government
Project Manager
Food Consultant
Research and Design Engineer
Food Technologist / Food Technology Consultant or Researcher in food companies
Research Institutes
Food Establishments
Production Manager
Food Application Specialist
Product Development Specialist
Food Quality Assurance
Sensory Specialist
Food Sales Representative
Private and Academic Institution
Research Technician
Food-Based Entrepreneur

List of colleges:
Harcourt Butler Technological Institute - Bachelor of Technology in Food Technology
College of Dairy & Food Science Technology - Bachelor of Technology in Food Technology
Kongu Engineering College - Bachelor of Technology in Food Technology
Sanskriti Institute of Management and Technology (SIMT), Mathura - Bachelor of Technology in Food Technology Engineering
Faculty of Engineering and Technology, Jadavpur University, Kolkata - Bachelor of Technology in Food Technology and Biochemical Engineering
National Institute of Food Technology Entrepreneurship and Management - Bachelors in Food Technology and Management
College of Engineering, Guindy - Bachelor of Technology in Food Technology
Institute of People's Science and Technology,Chitrakoot - Bachelor of Technology in Food Technology
TKM Institute of Technology,Kollam (TKMIT) - Bachelor of Technology in Food Technology
Panjab University, Chandigarh - Bachelor of Engineering in Food Technology
Rajasthan Technical University, Kota - Bachelor Of Technology in Food Technology
Laxminarayan Institute of Technology - Bachelor of Technology in Food Technology
Rashtrasant Tukadoji Maharaj Nagpur University - Bachelor of Technology in Food Technology
Guru Nanak Dev University, Amritsar - Bachelor of Technology in Food Technology
Haldia Institute of Technology - Bachelor of Technology in Food Technology
Osmania University, Hyderabad - Bachelor of Technology in Food Processing Technology
University College of Technology, Osmania University - Bachelor of Technology in Food Technology
Doon Valley Institute of Engineering and Technology (DIET), Karnal - Bachelor of Technology in Food Technology
North Maharashtra University - Bachelor of Technology in Food Technology
Techno Global University - Bachelor of Technology in Food Technology
West Bengal University of Technology - Bachelor of Technology in Food Technology
Vaugh School of Agricultural Engineering & Technology (VSAET) - Bachelor of Technology in Food Tech (Process & Food Engineering)
Dr. Balasaheb Sawant Konkan Krishi Vidyapeeth - Bachelor of Technology in Food Science
Shivaji University - Bachelor Of Technology In Food Technology
Bhubaneswar Institute of Technology - Bachelor of Technology in Food Technology
Amity University, Noida - Bachelor of Technology in Food Technology
Shoolini University, Solan - Bachelor of Technology in Food Technology
Jaipur National University - Bachelor of Technology in Food Technology
Maharana Pratap University of Agriculture and Technology - Bachelor of Technology in Food Technology
Guru Nanak Institute of Technology, Kolkata - Bachelor of Technology in Food Technology
Manda Institute of Technology - Bachelor of Technology in Food Technology Engineering
Anna University, Chennai - Bachelor of Technology in Food Technology