East Coast Senior Building Performance Engineer - help shape the future of sustainable building performance at HGA! HGA is seeking a Senior Building Performance Engineer to lead and expand its Building Performance practice on the East Coast—specifically in Boston, MA or Washington, DC . This is a full-time opportunity for someone passionate about energy optimization , sustainability , and high-performance building systems . What You’ll Do: lead commissioning of HVAC, electrical, plumbing, and automation systems; collaborate with clients and design teams on decarbonization and energy efficiency strategies at both building and campus scales; act as sustainability team leader/project manager across sectors like Science & Technology, Higher Education, and Healthcare; evaluate and improve performance of existing buildings; and support and train junior engineers.