Building Performance Specialist

Trellis Group; Philadelphia (Philadelphia County); On-site; USD 90,000 - 130,000; Full time

Job summary

KieranTimberlake in Philadelphia is seeking a Building Performance Specialist to join our studio. The role focuses on advancing sustainable, high-performing building design across projects, guiding teams toward measurable environmental outcomes and advocating with clients.

You will work hands-on with energy, carbon, daylight, and comfort modeling while also shaping targets, translating analysis into design direction, and co-developing workflows with Design Computation researchers to make

Responsibilities

• Advance office-wide performance literacy and sustainable design ambition

Job description

KieranTimberlake is seeking a Building Performance Specialist to join our Philadelphia studio. Our projects span civic, academic, cultural, and institutional work, and you’ll work alongside colleagues who engage deeply across all phases, from early design through construction administration, and who are invested equally in design excellence and environmental performance.

Founded in 1984, KieranTimberlake unites the expertise and talents of professionals from diverse backgrounds in a practice that is recognized globally. In 2025, after 40 years as a founder-led firm, we transitioned to 100% employee ownership, a milestone that reflects a deep commitment to our staff.

Your Role

The Building Performance Specialist will be a member of KieranTimberlake’s Research Group and will work to advance sustainable, high-performing building design across the practice. They will be responsible for applying their experience in building performance analysis and sustainable design to advise project teams, advocate with clients, and guide consultants and colleagues toward measurable environmental outcomes. While the role includes hands-on energy, carbon, daylight, and comfort modeling, its emphasis is strategic: setting performance targets, shaping design decisions, and translating analysis into design direction. Working with Design Computation researchers, they will co-develop digital workflows that automate analysis and make performance methods accessible to peers.

What you’ll do:

1. Advance office-wide performance literacy and sustainable design ambition