For a pair of former associates at LeBoeuf, Lamb, Greene & MacRae, leaving the firm has in some ways felt an awful lot like staying put.

Anil Aggarwal and Ray Iglesias resigned from LeBoeuf in January to pursue the launch of their financial services-related, e-commerce start-up But in an unusual arrangement with the firm, they have continued to spend their working hours in LeBoeuf’s midtown Manhattan offices, with an expanding roster of employees, as the company prepares to move into its permanent home this weekend.