EMPLOYMENT APPLICATION​​ Please fill out the form below for all job listings. The Borough of Middlesex is an Equal Opportunity Employer.By signing in or creating an account, some fields will auto-populate with your information. Middlesex County Employment Application. Position(s) applying for. We are dedicated to helping the people who utilize our services. EMPLOYMENT APPLICATION​​ Please print and fill out the form below for all job listings. Welcome to Middlesex Borough School District! To establish a complete pre-employment file, please complete the online application. To complete the online application, use the 'Start an application for employment' link available on this site.