A Pennsylvania-based telecom company is adding a second building and nearly 40 jobs in Schenectady.

Communications Test Design, Inc. is expanding to another building at Glenville Business and Technology Park in Schenectady, Gov. Andrew Cuomo's office announced Monday. The company previously promised to create 150 jobs and use 130,000 square feet of space for operations but exceeded their commitment, adding more than 300 employees and an extra 20,000 square feet.