Pinnacle Professional Services, LLC. is an independent recruiting and consulting firm owned by its professional staff. Outranking the largest US staffing firms in customer service, Pinnacle’s reputation for uncompromising professionalism, expertise and outstanding service explains why more and more companies and organizations consider Pinnacle to be the firm of choice for RPO services. PPS is a strategic HR planning and staffing firm focusing on the IT, Engineering, Green Jobs and Medical industries.