Staff

A company is only as good as its people. And we have great people. All team-members are engineers, using an integrated approach to produce design calculations, models, and drawings to ensure project success.

Russ Leffler, P.E., S.E., M.L.S.E., Principal

Leffler Group LinkedIn
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Qualifications:
Mr. Leffler has been providing consulting structural engineering services for nearly 20 years including project management, design, value engineering and structural system selection for a variety of project types. Russ is in charge of project management and design, and is a registered professional engineer in over 25 states and Alberta. His wife, two high-schoolers and 3 hilarious dogs occupy his spare time, along with fishing, archery, and hiking.

The first part of his career was spent designing and managing larger public works projects including higher education, correctional facilities, high tech facilities and industrial structures. Since 2001 he has expanded into component markets such as cold-formed steel structures and solar structures, and into Virtual Design and Construction support through BIM modeling of interiors and other structural components. Russ is focused on developing and providing leading edge services to meet the needs of contemporary projects through integrated design and detailing services necessary for today’s challenging projects.

Education:
B.S. Civil Engineering, Colorado State University, 1992
M.S. Civil Engineering, Colorado State University, 1993

Professional Affiliations:
Member, ACEC, ACI, ASCE, CFSEI, ICRI, ICC, NCEES, PTI

Publications:
Wind-Tunnel Modeling of the Atmospheric Surface Layer, Journal of Wind Engineering and Industrial Aerodynamics, 1995.

Area-average Wind Pressures on a Low-rise Building Proceedings, ASCE Structures Congress XIV, 1996.

Ryan Nelson, P.E., S.E., Engineer

Leffler Group LinkedIn
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Qualifications:
Mr. Nelson is a structural engineer providing structural design for many different projects. He is a registered professional engineer in Colorado. Ryan spends time with his wife and two kids, and enjoys mountain biking, motocross and hockey. He also spends a fair amount of time chasing his 4-year old motocross competitor.

Education:
B.S. Civil Engineering, Colorado State University, 2006
M.S. Civil Engineering, Colorado State University, 2010

Professional Affiliations:
Member, ASCE, AMA

Daniel Stadig, P.E., Engineer

Leffler Group LinkedIn
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Qualifications:
Mr. Stadig is a structural designer with the firm, and is a registered professional engineer in the state of Colorado. Danny is currently pursuing his Masters of Science Degree in Structural Engineering through Mississippi State University’s Distance Learning Program. Danny spends time away from the office with his wife and dog enjoying Colorado’s outdoor lifestyle.

Education:
B.S. Civil Engineering, Marquette University, 2009
M.S. Structural Engineering, Mississippi State University, 2017 (expected)

Professional Affiliations:
Member, SEAC (Professional member; Education committee member)

Kelly Leffler, Principal, Chief Financial Officer

Leffler Group LinkedIn
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Qualifications:
Ms. Leffler began her career as a civil engineer, working primarily in land development in the Denver area for over 12 years. She has been an integral part of the company since its inception in 2001, and became the Chief Financial Officer in 2007. She also enjoys her two CU Buffs, 3 hilarious dogs, and hiking, but cooking is her passion.

Education:
B.S. Civil Engineering, Colorado State University, 1992