Who are intandem systems? InTandem Systems is a growing and thriving Hampshire based BEMS (building energy management systems) controls specialist, established since 1997. Our company provides designWhy work with intandem hr? InTANDEM HR works with non-profit clients at greatly reduced service fees. The InTANDEM HR Foundation was created to advocate for women, children, and healthcare organizations to make our community stronger.Is intandem hr a cpeo? InTANDEM HR is now one of the first PEOs to meet the standards set by the U.S. government and become certified by the IRS as a CPEO. time on HR, payroll, benefits and compliance needs.Why work with winston tan and intandem? We first engaged Winston Tan and InTandem when we needed help in developing a new and up-to-date compensation plan. Winston was very easy to work with and the process went smoothly, culminating in speedy board approval. We have now engaged InTandem to help develop a performance management plan to coincide with the new compensation plan.