Upon completing a diploma in hotel management and catering science, you can find employment opportunities in hotels, restaurants, catering companies, airlines, cruise ships, and other tourism and hospitality-related businesses. Some of the job roles that you can apply for include hotel manager, restaurant manager, catering manager, food and beverage manager, and front office manager. You can also pursue careers in event management, tourism, and travel. The salary range may vary depending on the job role, experience, and the specific industry. However, you can expect to earn a competitive salary and have the opportunity to advance your career over time.