Of course our engineers are well educated and heavily qualified. But mostly, our staff is chosen for their unconventional intelligence, communication ability, and positive attitude. If this describes you, and you want to join us, send us a message!


J. August Hasz P.E.
President & Principal Engineer

August has overall responsibility for the day-to-day operation of the company, oversight of all scopes of work REG provides and detailed engineering including mechanical system design, structural systems, energy auditing, commissioning for new and existing buildings, building simulation, and solar energy analysis. August’s engineering mastery, creative attitude, and innate sense for completing complex projects on time and budget have allowed him to compile an impressive track record of successful projects at REG over the course of more than a decade. His project experience includes passive heating and cooling strategies, active solar thermal and solar electric systems, ground source heat pumps, and radiant cooling systems. His past experience includes fundamental research into glass and ceramic materials, water pump design, and water and wastewater plant operation. August also manages REG’s staffing, project scheduling and budgeting, risk management and multi-discipline project delivery.

August earned a Bachelor of Science degree in Glass Engineering Science from the New York State College of Ceramics at Alfred University, with honors. He is LEED accredited, NCEES registered, and a member of ASHRAE. He is a licensed Professional Engineer in Colorado, California, Massachusetts, Montana, New York, New Jersey, Texas, Utah, Vermont and Wyoming.


Dodson Harper P.E., S.E.
Vice-President & Principal Engineer

Dodson Harper leads the Structural Engineering Department at Resource Engineering Group as well as oversight of MEP systems engineering. His responsibilities include structural design, forensic analysis, SMEP project management and managing staffing, project control (schedule and budget), risk management, hardware/software acquisition and maintenance, and in-house training for REG. Dodson’s ability to understand the big picture view of projects has built a long history of on-time/on-budget projects for over 10 years at REG. His project experience includes residential, commercial, and institutional spaces for both new construction and remodels. In addition to designing with conventional steel, wood, and concrete systems, Dodson is a recognized expert in alternative building systems such as straw bale and clay-straw techniques. His extensive contracting and framing experience is invaluable when construction problems need to be solved.

Dodson earned a Bachelor of Arts in Mathematics with Honors from Westminster College in Fulton Missouri, and a Bachelor of Science in Civil Engineering with Honors from Colorado State University. He is a registered Professional Engineer in Colorado, Florida, and Vermont, and a registered Structural Engineer in Idaho and Utah.


Zachary Gustafson P.E.
Senior Project Engineer

Zack Gustafson is an engineer with a unique background and a deep knowledge base of all things mechanical. His ability to puzzle through difficult problems makes him an invaluable contributor to complicated building projects, often by finding elusive but simple solutions. In addition to being a capable and clever system designer, he provides building simulation, energy auditing, and commissioning services. In his previous work as an acoustical engineer, Zack developed consumer products including microphone and audio systems and was named on four patents. Part of Zack’s practical knowledge of mechanical systems comes from his experience as Facility Manager of a remote lodge with 15 buildings. His skills also include engine repair, bicycle and motorcycle construction, data/wifi/phone systems, off-grid living, and other assorted wizardry.

Zack holds a Bachelor of Science degree in Mechanical Engineering from Calvin College in Michigan. He is a registered Professional Engineer in Colorado.


Kris Bruun, P.E.
Project Engineer

Kris Bruun’s experience in fluid mechanics, water system analysis, wastewater treatment, and sustainable development all inform his work at REG, where he designs mechanical and plumbing systems for residential and commercial projects. Previously, his work included hydrologic field studies, open channel weir design, rural water treatment system design and installation, and the development of constructed wetlands. Kris is active in projects that combine engineering skills with social needs—including Engineers Without Borders—and he has a well-worn passport.

Kris earned a Bachelor of Science in Civil Engineering and a Master of Science in Environmental Engineering from the Colorado State University. He is a registered Professional Engineer in the state of Colorado.


Garrett McCaffety, P.E.
Project Engineer

Garrett’s engineering background includes mechanical engineering, civil engineering, and project management with a focus on energy efficiency and sustainable design. His engineering experiences include high-end mechanical system design, large-scale civil infrastructure design and project management, and 3D building design. His ability to efficiently solve problems has made him a valuable asset to REG’s clients. His responsibilities include computerized building simulations, load calculations, mechanical system designs, building commissioning, construction assistance, and Title 24 code compliance with Energy Pro.

Garrett holds a Bachelor of Science in Civil Engineering with a minor in Business Management from North Carolina State University. He is a registered Professional Engineer in Colorado.


Jared Marchand, P.E.
Project Engineer

Jared’s engineering experience includes environmental, structural and electrical design and project management. As a renewable energy systems specialist, he designed, managed and installed a variety of photovoltaic (PV) systems including residential grid- tied, off-grid battery back-up, commercial power purchase agreement, and megawatt- scale utility solar gardens. Jared’s PV experience has been earned in harsh mountain environments, where systems must comply with NEC, IBC and IFC standards for roof mount, roof ballast, pole mount, ground-mount and ground-ballast designs. His structural experience includes masonry, steel, concrete, and wood design as well as LEED certification and carbon fiber reinforcement applications. Jared’s diverse background of engineering, management and construction experience provides a strong platform to envision the building as a whole when designing for maximum efficiency.

Jared earned a BS degree in Civil and Structural Engineering from the University of Delaware, is a registered Professional Engineer in the state of Colorado, and is a NABCEP certified PV system installer.


Brian Buchanan, P.E.
LEED AP BD+C, Project Engineer

Brian Buchanan provides structural design for commercial and residential buildings.  His background includes structural engineering and construction project management for commercial, industrial and residential projects. Brian’s structural engineering experience includes steel, concrete, concrete tilt-up, masonry and wood construction. Brian’s 5-years leading construction teams in the field give him the perspective to identify the most efficient and practical solution—not just in materials but also in terms of man hours—when laying out structural systems. Brian’s work evaluating, restorating and renovating existing buildings further add to his ability to problem solve for new and existing structures.

Brian holds a BS in Construction Engineering and Management from North Carolina State University.  He is a registered Professional Engineer in Colorado and North Carolina and LEED AP BD+C accredited.


Jonny Holton, E.I.T.
Project Engineer

Jonny Holton designs mechanical and plumbing systems for a wide variety of building types. His experience includes ground source heat pump system design, radiant cooling, hydronic heating and cooling with air-source heat pump systems, high-efficiency boiler retrofits, plumbing designs for historic building renovations and luxury modern projects, mechanical system design coordinated with off-the-grid power generation, and commissioning of complex building systems. Jonny’s responsibilities include development of software tools for accurate system sizing, energy analysis using the EnergyPlus modeling platform, and 3D intelligent modeling (BIM) of commercial and residential buildings. Previously, Jonny worked as a project manager in the medical device manufacturing industry. His positive attitude and collaborative mindset are invaluable.

Jonny earned a Bachelor’s Degree from the University of Colorado, Boulder. He is a member of ASHRAE, and a NCEES-registered Engineer-in-Training.


Hannah Malloy
Project Engineer

Hannah provides structural engineering and project management. She specializes in engineering resource efficient structural systems for a variety of building types including multi-family affordable housing, single family and luxury residential projects. Hannah is adept at finding simple solutions to complex engineering challenges. Her previous experience in aerospace engineering, retrofitting interiors for the Boeing 777 and Airbus A350, enabled her to travel and collaborate with engineers and manufacturers from many different countries and cultures. She also worked as a researcher investigating seismic hazards in the deserts of New Mexico near the Los Alamos National Lab. Hannah's diverse engineering background provides her with the perspective to be a flexible and creative problem solver.

Hannah earned a Bachelor of Science in Civil / Structural Engineering from the University of Vermont.


Drew Larson, E.I.T.
Project Engineer

Drew began his engineering career working at a structural engineering firm in the Roaring Fork Valley engineering residential projects. He then spent over a decade as the Director of Research for the Aspen Sports Medicine Foundation.  Here he published numerous peer reviewed scientific articles while broadening and sharpening his engineering skills solving unique problems. He presented this research all the way up to the international level and served as a reviewer for biomedical and orthopedic journals. Throughout this time, Drew also worked with biomedical companies on the design of medical devices and implants for the field of sports medicine.

In addition to experience framing homes in Aspen, Drew recently designed and built his family’s home here in Crested Butte—he is familiar firsthand with the challenges of construction. Drew is excited to be bringing his career full circle at REG and once again providing structural engineering. His responsibilities include design of wood, steel, and concrete structures, as well as construction assistance.

Drew earned a Bachelor of Science degree in Mechanical Engineering from the University of Kansas. He loves living, working, and playing in the Gunnison Valley with his wife and three boys.


Arliss Merrell, P.E.
Project Engineer

Arliss is an engineer with extensive experience in the HVAC Engineering industry. His background in construction and engineering has supported a wide range of projects with municipalities, K-12, higher education and residential clients over the last 10 years. Arliss also has firsthand experience with high-end HVAC systems for art museums and radiant cooling. Some areas of interest include chilled water plant design, heating water plants, natatoriums, ground source, solar thermal, VRF systems and ventilation rate procedures. Arliss provides clients with innovative solutions focused on reducing their utility and operational costs and improving their operations.

Arliss earned a Bachelor of Science degree in Mechanical Engineering from Clarkson University. Arliss is a NCEES-registered Engineer-in-Training. He is a registered Professional Engineer in the state of Colorado.


Kristine Thompson, P.E.
Project Engineer

Kristine comes from a background in electrical product development and project management.  Her experience includes designing wireless communications, low voltage power systems, and control systems for appliances, medical devices, and renewable energy platforms.  As an electrical product designer, Kristine developed extensive experience with interfacing to low voltage and renewable energy platforms and gained unique problem solving experience in balancing budget and multi-disciplinary requirements.  Kristine's interests include renewable energy, off-grid, and smart grid systems.   

Kristine earned a Masters of Science degree in Electrical Engineering from the University of Colorado - Boulder. She is a registered Professional Engineer in the state of Colorado.


Heather Kelley
Office Manager

Heather handles REG’s day-to-day essentials, including bookkeeping, payroll, receivables, payables, contract administration, travel and phone plans, PE registration, continuing education, and the other behind-the-scenes activities that make sure that the rest of us actually have jobs. In addition to being a whiz with financial software, the main tools of her trade are her quick wit and endless patience.