What does lehigh technical do? Lehigh Technical, a national provider of skilled Engineering, Information Technology, Professional, and Accounting & Finance staffing agency based in Hauppauge, NY. Lehigh Technical and affiliates are a leading provider of Staffing Services and HR Solutions, with more than 100 offices throughout the United States.How do i contact lehigh universitys office of admissions? Office of Admissions. Phone: (610) 758-3100. Fax: (610) 758-4361. Email: [email protected]. Transfer Students: [email protected]. What services does lehigh offer? Throughout our branch network, we offer our clients and employees services ranging from Contract Staffing, Direct Hire, HR Outsourcing, Managed Services, and much more. Lehigh's mission is to develop long-term working relationships with outstanding professionals and forward-thinking clients based upon performance and trust.