C03 Systems and ROI Solutions are leasing space at One Alewife Center in Cambridge.

ROI Solutions, a database application provider, is leasing 6,112 square feet; C-3 Systems, a data loss management firm, is occupying 4,834 square feet.

Developed in 1988, One Alewife Center is an 89,875-square-foot, four-story Class-A office building located at the intersection of Route 2 and Alewife Brook Parkway.

Rob Cronin, vice president, and Jesse Flynn, senior associate, of Lincoln Property Co. handled the assignment on behalf of ROI Solutions. Greg Hoffmeister, managing director of T3 Realty Advisors, acted on behalf of CO3 Systems. The landlord, New Boston Fund, was represented by Tucker Hansen, senior vice president of Colliers International, in both transactions.

New Boston purchased One Alewife Center in November 1999 as part of New Boston Funds IV and V.