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Our Team

Blake DeMarr - Professional Engineer

Blake D. DeMarr, P.E

Managing Member

Blake is a founding member of DeMarr Engineering, PLLC where he specializes in land development design for property owners and developers in the Northern Virginia and Washington DC region. Blake manages the daily business operations and supervises design production in the Arlington, VA office location.

Outside of work, Blake enjoys weightlifting, golf, and travel.

Jake Kirkwood - Professional Civil Engineer

Jake A. Kirkwood, P.E.


Jake joined DeMarr Engineering in 2018 and is licensed as a Professional Civil Engineer in Washington, DC. He specializes in land development and stormwater management design in Washington DC and the surrounding region. Jake leads the civil design team and is the resident expert on Washington DC land development projects.

Outside of work, Jake enjoys running and hiking with his wife and their two dogs.

Alex Miller - Civil Engineer

Alexander H. Miller, E.I.T.

Civil Engineer II

Alex joined DeMarr Engineering in 2022 and is registered as an Engineer-In-Training (E.I.T.) in Virginia. He specializes in LiDAR Remote Sensing applications for tree preservation, land development, and stormwater management.

Outside of work, Alex enjoys rock climbing, traveling, and trying new foods. When the weather is nice, look for him on the side of a cliff.

Chris Donohue - Civil Design Technician

Christopher J. Donohue

Civil Design Technician

Chris joined DeMarr Engineering in 2024 and specializes in AutoCAD drafting and project cost estimating. Chris also provides office support to our field crews with transferring data and information between field and office.

Outside of work, Chris enjoys spending time with his family and friends, whether that’s boating in the Chesapeake Bay or adventuring to new places in the DMV.

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