BALTIMORE — The emailed rejection came as no surprise to Bill Skibinski, though the Abingdon, Md., resident believed he was more than qualified for the entry-level job he’d applied for online.

After spending two years seeking full-time work, Skibinski is convinced that the computerized screening systems most companies use to hire actually work against job candidates, no matter how qualified they are.

“It is a frustrating and unfair process,” said Skibinski, who is working part-time as a contractor while completing a master’s degree in environmental planning at Towson University. “You don’t hear a thing through the Web process, but that’s really the only way you can” apply for a job.

Most large employers, even the federal government, use so-called applicant tracking systems to find qualified candidates. Increasingly, smaller companies are turning to them, too. Software screening is designed to help employers manage overwhelming volumes of applications and eliminate applicants who lack the required skills.

But some experts blame these systems for eliminating qualified candidates and for contributing to a shortage of skilled workers – a problem companies say they face even in a market glutted with job seekers.

More than a third of employers in a June CareerBuilder survey said they currently have positions they can’t fill because of a lack of qualified candidates. And that’s hurting business: A third said vacancies lead to overworked employees and lower quality of work.

Peter Cappelli, a professor at the University of Pennsylvania’s Wharton School of Business, argues in his book “Why Good People Can’t Get Jobs” that employers can’t find qualified workers not because of a “skills gap,” but because employers’ hiring requirements are unrealistic, salaries are too low, and overly rigid applicant screening keeps most people out.

“The problem comes with employers trying to use these systems for more than they’re capable of doing,” said Cappelli, director of Wharton’s Center for Human Resources. “They have so constrained their criteria, they end up with nothing. They want skill sets that don’t exist.”

Cappelli says the software often is inflexible and can’t determine “all the different ways that somebody might be qualified” for a job. Instead, he said, candidates are asked a series of yes-or-no questions designed to find someone who’s already doing the precise job the employer is trying to fill.

“It explains why employers feel that there’s nobody for them to hire, even though any objective observer would say there are hundreds of people who could do your job,” Cappelli said.

For Skibinski, 36, an Army veteran who switched careers in 2006 after being laid off as a field engineer and project manager in the lottery industry, the computerized job-application process is full of stumbling blocks and frustration. He said his status as a veteran hasn’t helped him.

In the past couple of years, Skibinski has applied for graduate assistantships, entry-level planning positions, jobs at Walmart, Target and Starbucks – anything to bring in a paycheck.

The result? Either no response or a rejection note, even when he met all the minimum requirements.

But for companies trying to sort through an avalanche of applications at a time of record unemployment, tracking systems can be a “godsend,” said Dawn A. Haag-Hatterer, a human resources advisory consultant based in Frederick, Md. She said the systems help companies weed out “the folks who truly don’t belong in the applicant pool.”

‘A moving target’

Companies began shifting from paper to electronic applications in the 1990s to make it easier for people to apply, and to save on recruitment costs, Cappelli said. Because it’s so easy to apply online, companies have been inundated with thousands of applicants for every opening, he said.

But the systems have their limitations, acknowledged Haag-Hatterer, president and CEO of Consulting Authority LLC.

“You’ve got to spend the time to get the right system in place, customize it, and set up the criteria that will best give you the return you’re after,” she said. “And that can be a moving target. You don’t just implement software to parse through hundreds of résumés.”

Most large companies have comprehensive screening systems in place. Now, smaller companies have begun testing the waters, using recruitment software systems that look for specific keywords in résumés and cover letters.

Haag-Hatterer, however, warns that employers that do little more than rely on keywords may hurt their chances of finding the right people.

“If you’re picking out words that everyone uses – strategic, budget, planning, something that’s an ambiguous term – you’re not doing yourself any good,” she said. “All it tells you is how to beat the system, and qualified applicants may be left out of the selection process.”

The bottom line for companies, she said, is how comfortable they are allowing a tracking system to sort through and decide whom you follow up with and whom you don’t.

Baltimore-based sports apparel maker Under Armour, which is growing and hiring, said it decided last year to overhaul its applicant tracking system to speed up searches. The company gets, on average, 35,000 applications a month.

Troy Barnett, Under Armour’s director of HR process and technology, called the new system “extremely effective,” allowing the company to divide applications by division: retail, corporate, international and distribution, and then assign them to specific recruiters.

“Once we find candidates, we have the ability to create questionnaires and rank resumes and candidates to get the best candidate for the position,” Barnett said. “It gives the recruiters more information when they’re looking at a particular candidate, and (the ability) to ask those tough questions sooner rather than later.”

Public agencies’ systems

Like the private sector, public agencies also rely on computerized tracking systems.

HHS Careers, the U.S. Department of Health and Human Services’ recruiting system, posts federal job vacancies to USAJOBS, the government’s official online job site.

“Top talent is quickly identified, speeding up the federal hiring process,” according to the department’s website.

But many applicants who regularly use the system complain that applications rarely move on to hiring managers and never lead to interviews.

Applicants said the government system offers little chance to highlight their strengths, and provides little or no feedback.