The Computer Merchant. LTD, is a nationally recognized Information Technology Software Engineering staffing and services firm. Headquartered in the Boston metro area TCM specializes in servicing its clients and the technologists that we serve in Enterprise Technology contract assignments, direct-hire, project teams, SOW Project Solutions and Managed Staffing Programs. TCM\s clients are represented by the very best Technologists who we have placed at Fortune 1000, mid-to-small/medium.