Sasha Hafner
Senior Researcher at Aarhus University
Reston, Virginia, United States
Summary
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Senior🎓
Top SchoolSasha Hafner is a Senior Researcher with eight years of focused experience developing models and software for predicting ammonia and methane emissions from agricultural systems. He blends environmental science, engineering, and mathematical modeling to deliver tools—like the OBA web app, ALFAM2 ammonia model, GD-BMP lab method, and an ABM microbial model—used by researchers, regulators, plant managers, and consultants. His work bridges lab method development and applied web tools, making complex biogas and emissions science accessible and actionable. Author of over 50 peer-reviewed papers, he pairs rigorous academic training (Ph.D. Cornell) with hands-on consultancy and productization through Hafner Consulting. Based in Reston, VA, he brings proven skill in data analysis, R-based tool development, and translating mechanistic models into practical decision-support systems. One less obvious strength is his track record of improving measurement and calibration procedures to boost accuracy and usability across both laboratory and field contexts.
8 years of coding experience
11 years of employment as a software developer
Ph.D., Agricultural and Biological Engineering, Ecology and Evolutionary Biology, Ph.D., Agricultural and Biological Engineering, Ecology and Evolutionary Biology at Cornell UniversityM.S., Environmental and Forest Biology, M.S., Environmental and Forest Biology at State University of New York College of Environmental Science and Forestry
Github Skills (18)
r-package10
r10
frame10
loss10
cran10
measurement9
rcppeigen8
foreach8
mixed-models7
linear-models6
sympy4
multicore4
python3
statsmodels3
parallel-computing3
Programming languages (3)
Github contributions (5)
AU-BCE-EE/STM
Feb 2021 - Aug 2024
Contributions:2 releases, 120 pushes, 2 branches in 3 years 5 months
sashahafner/BMP-methods
Feb 2019 - Jan 2023
Free, open-source documents on biochemical methane potential measurement and calculations
Contributions:182 commits, 6 PRs, 144 pushes in 3 years 11 months
measurementcalculations
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