Several information technology companies are seeking staff in 23 pages of recruitment advertising in today's Business This Week 2 section. Among the companies are America On Line, Local Ireland, ICL and Sensormatic.

Pharmaceutical companies are also recruiting. These include Chemspec, which wants a business manager and laboratory staff and Warner Lambert, which requires assistant production managers and production engineers.

Solicitors McCann FitzGerald is also advertising several positions, including vacancies for corporate, legal information and financial lawyers.