NEW YORK (CNNMoney.com) – The job market for college seniors is the best it's been in five years. But it's better at some companies than others.

The job site CollegeGrad.com surveyed 1,100 companies about their hiring expectations for entry-level workers this year, and compiled a list of those with the most positions to fill.

The companies that report having the highest number of entry-level positions to fill are Enterprise Rent-A-Car, Lockheed Martin, Walgreen Company, Pricewaterhouse Coopers and Deloitte & Touche USA LLP. (See the top 50 in the table below, and the full 500 here.)

The survey found college seniors who majored in marketing, business, management, accounting, computer science and communication are among the most in demand.

But there's good news for liberal arts grads, too, said Philip Gardener, director of Michigan State University's Collegiate Employment Research Institute (CERI).

Almost half of the jobs he sees companies recruiting for are in sales and marketing, jobs that stress excellent interpersonal and communication skills as well as the ability to work "in an ambiguous environment," he said. More so than engineers, IT professionals and other technically oriented grads, liberal arts majors tend to do well in these positions, Gardener said.

But it's not just big companies that are hiring. Small companies are hiring a significant number of new college graduates, expanding job opportunities by about 25 percent, according to a CERI report, which notes that "(w)hile it may seem that large companies have all the jobs, small employers – and there are thousands – may actually be the best place to find employment."