Atterro matches people to jobs in every business category, through five specialty brands: Digital People for Creative, Interactive and Marketing, Hunter Hamilton for Finance and Accounting, Pro Staff for Administrative and Light Industrial, Ware Technology Services for Engineering, and Atterro Workforce Solutions for on-site staffing, managed service provider & recruitment process outsourcing. Each Atterro brand makes a promise to employers and job seekers: fast action, top quality placements and personal service. The Promise of People.