Kasalis, a Burlington-based industrial technology firm, has been acquired by publicly-traded electronic products firm Jabil Circuit Inc. , headquartered in Florida. The Kasalis office in Burlington will remain open and be expanded as part of the acquisition, growing headcount from 27 to about 40 within the next few months, said Irvin Stein , senior global business units director of Jabil Optics, the division of Jabil that Kasalis will now fall under.