Established in 2014, Keystone Structural Group, Inc (KSG) is an engineering consulting firm that provides full-service structural engineering services to the architectural and construction community. Our principals have a close to 30+ years of successful design and engineering experience and have earned a reputation for responsiveness, innovative, cost effective solutions, and adherence to schedule.

Over their careers, our principals have attained experience in designing a wide variety of structures including commercial, education, healthcare, hospitality, mixed-use, retail, religious, restaurants, multi-family residential structures, modular structures, warehousing, cold-storage and industrial.


Working in collaboration with architects, contractors, fabricators, developers, other engineers and interior design professionals, our structural engineering team designs structural systems that work in harmony with their overall design vision. We utilize the latest industry standard computer software for drafting, analysis, design and detailing including REVIT Structure and Bentley Structural Building Information Modeling (BIM), AutoCAD and RAM Structural Integrated
Design Products.

Combined our partners are registered as professional engineers in the following states: CO, CT, DE, FL, IN, MA, MD,MI, NJ, NY, NC, PA, SC, TX, VA, WV and D.C.


Picture of Anthony P. Shulde, P.E.
Principal / Structural Engineer

Anthony P. Shulde, P.E.

Practicing since 2009 B.S., Civil Engineering,Pennsylvania State University B.S., Surveying,Pennsylvania State University

Tony has served as the lead structural engineer, project manager and field engineer on both small and large projects throughout his career. In addition to new buildings, he is experienced with major renovations and construction management services. Tony is an expert in the design of structural steel, modular construction, timber framing, masonry, and retaining wall structures. Tony is highly knowledgeable in structural analysis, structural materials and foundation engineering.

Picture of Daniel J. Horn, P.E.
Principal / Structural Engineer

Daniel J. Horn, P.E.

Practicing since 2005 B.S., Structural Design and Construction Engineering, Pennsylvania State University

Dan has served as the lead structural engineer and project manager on projects ranging from small unique structures to large complex buildings. Dan’s strong technical skills has allowed him to build a strong portfolio of projects throughout the United States; including K-12 academic facilities, university dorms, hospitals and healthcare facilities, corporate office buildings, retro-fits of existing buildings, industrial facilities and multi-family residential buildings.


Picture of Jared Warren, E.I.T.
Structural Designer

Jared Warren, E.I.T.

B.S., Architectural Engineering, Pennsylvania State University

Jared interned with Keystone Structural Group in 2017 and became a full-time employee upon graduation, in May 2018, from Penn State University’s Architectural Engineering program. Jared is a structural designer and an important member of our team.

Picture of John Berry
Structural Designer

John Berry

B.S., Structural Design and Construction Engineering, Pennsylvania State University

John joined Keystone Structural Group in 2018 as a structural designer. He brings with him years of successful experience and will be responsible for assisting in the structural design of buildings, construction document production and supporting our Senior Engineers. He is an expert with AutoCAD, Revit and RAM Analysis software.

Picture of Tina Marie Merli, PE
Senior Structural Engineer

Tina Marie Merli, PE

B.S., Structural Design and Construction Engineering, Pennsylvania State University

Tina Marie joined Keystone Structural Group in March of 2020. Tina Marie joins the firm as a Senior Structural Engineer and has practiced structural engineering academically as a senior instructor for Penn State University and in design practice for over 20 years. Throughout her career she has been employed by several reputable engineering firms and has practiced within her own privately held company designing commercial, educational, healthcare and industrial structures.

Picture of Casey Holleran, E.I.T.
Structural Designer

Casey Holleran, E.I.T.

B.S., Civil Engineering, University of Vermont

Casey joined Keystone Structural Group in 2020 as a structural designer. Casey began his career with a Rochester, NY based firm before moving back home to Northeast PA. Casey has earned his Engineer-in-training certificate and will continue on his career towards earning his Professional Engineering certification. He is a valued member of our engineering team.