A company that builds greenhouses on retailers’ roofs has hired a new vice president.

New York, N.Y.-based Bright Farms LLC has named Martin Weijters vice president of agriculture, according to a news release. Weijters previously worked as senior grower for Delta, British Columbia-based Houweling’s Tomatoes.

Bright Farms designs, finances and builds greenhouses that sit on retailers’ roofs. The company then sells its products, which include lettuce, greens and tomatoes, to the stores below.