Resume

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David Brown

Applied Mathematician & Aerospace Engineer

Professional Summary

Harvard Applied Mathematics student specializing in aerospace engineering and machine learning. Published researcher with two Nature publications on high-altitude balloon navigation, expertise in optimal control theory, and mathematical modeling. Currently serving as Chief of Staff at Urban Sky while pursuing dual M.S./B.A. degrees with Magna Cum Laude honors.

Professional Experience

Chief of Staff

May 1, 2025 - Present

Urban Sky

Denver, CO

Leading strategic operations and continuing technical leadership in balloon navigation systems for high-altitude surveillance and research missions.

  • Ensured timely completion of all company goals and objectives
  • Continued leadership over balloon navigation systems development
  • Strategic oversight of multimillion-dollar government contracts
  • Cross-functional team coordination and business development

Simulations Engineer

November 1, 2022 - May 1, 2025

Urban Sky

Denver, CO

Led development of advanced balloon navigation systems using optimal control theory and machine learning for autonomous high-altitude operations.

  • Developed high fidelity model of balloon system operating in chaotic and dynamic 3D space
  • Leveraged Optimal Control Theory to develop AutoPilot system for complex nonlinear dynamic systems
  • Started Machine Learning Sector for controlling balloons using classical ML and reinforcement learning
  • Managed small team in development of several multimillion-dollar AFWERX/SBIR government contracts
  • Led business development opportunities for humanitarian and sustainable development applications
  • Conducted scientific studies into trends in wind behavior, historical shifts, and forecasting accuracies

Simulations and Modeling Intern

May 1, 2022 - November 1, 2022

Urban Sky

Denver, CO

Developed custom balloon flight simulators and analysis tools for mission planning and company expansion.

  • Modeled Balloon Flight Behavior by creating Custom Simulator using large wind and geographical datasets
  • Created tool for analyzing flight viability of any location in the US based on Wind and Geographical Conditions
  • Developed proprietary software for upcoming company expansion initiatives
  • Provided government contracting support for Phase 1 and 2 SBIR proposals

Aerospace Engineering Analyst Intern

June 1, 2023 - August 1, 2023

Maxar Technologies

Herndon, VA

Advanced spacecraft mission planning and orbital mechanics analysis for space-based intelligence systems.

  • Developed tools for fully customizable space-based simulator including high fidelity multibody transfer
  • Implemented optimization algorithms solving complex orbital transfers with up to 60% reductions in fuel costs
  • Leveraged Machine Learning to eliminate costly planning procedures, achieving 98% faster flight planning
  • Presented work to over 200 Applied Machine Learning Experts
  • Led small team in simulation and modeling for intelligent space agent decision-making
  • Specialized in Cis-Lunar and N-body Orbits and Transfers research

Education

Master of Science in Applied Mathematics

September 1, 2021 - May 1, 2025

Harvard University

GPA: 3.945/4.0

Honors:

  • HBS Fellowship (Roberts Family / Technology Innovation Fellow)
  • Thomas T. Hoopes Thesis Award (2025)
  • John Harvard Scholarship Award (2022)

Bachelor of Arts in Applied Mathematics

September 1, 2021 - May 1, 2025

Harvard University

GPA: Major GPA: 4.0/4.0

Honors:

  • Magna Cum Laude with Highest Honors in Applied Mathematics
  • Secondary in Astrophysics

Technical Skills

Programming Languages

Proficiency Expert
Python MATLAB C Java Arduino git

Aerospace & Simulation Software

Proficiency Advanced
STK GMAT CATIA CAD ArcGIS QGIS

Machine Learning & AI

Proficiency Advanced
PyTorch TensorFlow Reinforcement Learning Optimal Control Theory

Engineering & Fabrication

Proficiency Advanced
3D Printing Milling Laser Cutting Microcontrollers Shop Trained

Mathematical Modeling

Proficiency Expert
Differential Equations Fourier Analysis Linear Algebra Statistics

Publications

Seasonal and geographic viability of high altitude balloon navigation

D. Brown, M. Linz, J. Leidich • Nature Scientific Reports • 2024

Comprehensive analysis of global wind patterns and their impact on high-altitude balloon navigation capabilities.

The Goldilocks zone for high altitude balloon navigation

D. Brown, M. Linz, J. Leidich • Nature Communications Earth & Environment • 2024

Identifies optimal atmospheric conditions and altitude ranges where high-altitude balloons achieve maximum navigation control authority.

Flight Safety of launching a high altitude balloon through airspace

D. Brown, et al. • Pre Print • 2024

Safety analysis and risk assessment framework for high-altitude balloon operations in controlled airspace.

Awards & Recognition

Thomas T. Hoopes Thesis Award

2025

Harvard University

Prestigious award recognizing outstanding undergraduate thesis work in Applied Mathematics.

John Harvard Scholarship Award

2022

Harvard University

Merit-based scholarship recognizing academic excellence and potential for leadership.

HBS Fellowship (Roberts Family / Technology Innovation Fellow)

Harvard Business School

Selective fellowship program supporting technology innovation and entrepreneurship.