Thomas K. Baldwin Curriculum Vitae

Thomas Kendrick Baldwin

Portland, OR


Experienced data scientist with strong engineering skills. Motivated by learning new things, helping people, and the opportunity to work on challenging technical problems.


University of Oregon, Eugene, OR
Ph.D., Physics.

Adviser: Hailin Wang. Project: Trion-based Optical Processes in Semiconductor Quantum Wells.

Grinnell College, Grinnell, IA
B.A., Physics, magna cum laude.

Advisers: Sujeev Wickramasekara and Charles Cunningham. Trustee Honor Scholar, National Merit Scholar.

Spring 2007
Albert-Ludwigs Universit├Ąt, Freiburg, Germany

Exchange semester, Institute for the International Education of Students.

Sandia High School, Albuquerque, NM


Cascade Data Labs, Portland, OR
Data Scientist
Cascade Data Labs, Portland, OR
  • Developed and deployed models for a major personalized marketing program, including: Uplift optimization trees (causal forests), Bayesian transaction count models, anomaly detection, Prophet time series forecasting.
  • Contributed major development of a client's custom uplift modeling library: API design, code packaging/distribution, PySpark integration, and runtime performance optimizations to reduce cloud resource consumption by 10-100x.
  • Led development of MLflow-based toolchain for automatic model training and scoring. Improved visibility into model performance and unlocked 4x faster iteration by reducing operator effort.
  • Implemented simulation framework for offline testing of reinforcement learning models using Ray-based parallelism.
  • Designed and conducted real-world tests to measure campaign performance and generate training data for optimization models.
  • Built and maintained automatic weekly campaign reporting solution for a large customer loyalty program. Distilled terabyte-scale raw data inputs to rich interactive Tableau dashboards using Spark SQL and Airflow.
  • Conducted ad hoc analyses for business stakeholders. Including dataset creation, formulating new KPIs, visualizing and presenting findings.
Adjunct Professor
Lane Community College, Eugene, OR
  • Taught two sections of calculus-based physics:
    • PH 211 (F16+W17, 10 credit hours): Nature of science, mathematical representation, classical Newtonian mechanics, energy and momentum. With lab.
  • Taught two courses in conceptual physics for non-majors:
    • PH 101 (F16, 4 credit hours): Data analysis, laws of motion, momentum, energy, gravity. With lab.
    • PH 103 (S17, 4 credit hours): Atomic physics, quantum mechanics, nuclear physics, special and general relativity, astrophysics. With lab.
  • Participated in faculty seminar on the Scholarship of Teaching and Learning (S17). With Dennis Gilbert.
Independent Research Contractor
Eugene, OR
  • Updated a LIDAR model for a local optics company.
  • Researched and applied methods to account for pulse stretching induced by forward light scattering in seawater.
  • Translated model code from MATLAB to Python.
Insight Data Science Fellow
Insight Data Science
  • Created Snotelier, a site implementing automated avalanche danger summaries for climbers and backcountry skiers.
  • Built dataset in PostgreSQL by scraping data from Northwest Avalanche Center website and combining with USDA snow telemetry (SNOTEL) measurements available via public API.
  • Engineered features and fit a logistic regression model to predict avalanche danger using pandas and scikit-learn.
  • Implemented web app based on Flask, Bootstrap, and the Google Maps API.
  • Project completed in less than three weeks.
Graduate Research Assistant
Oregon Center for Optics, Eugene, OR

Adviser: Hailin Wang.

  • Primary project: investigating interlayer exciton-correlated hole tunneling in Gallium Arsenide (GaAs) mixed-type quantum well (MTQW) structures at high magnetic fields.
  • Side project: Diamond nitrogen-vacancy (NV) centers as a quantum bit candidate. Ion implantation and annealing, imaging of single emitters using homebuilt confocal microscope, manipulation of ground state spin using microwaves, excited-state spectroscopy at cryogenic temperatures, photon antibunching.
  • Pump-probe spectroscopy of excitons, trions, and biexcitons in semiconductor quantum wells (GaAs, CdTe) and Bragg microcavities.
  • Developed pulse shaper based on a phase-only spatial light modulator (SLM), with protection system based on BBO crystal frequency doubling.
  • Two-time high-field user at National High Magnetic Field Laboratory, Tallahassee, FL. Operated 25T Split-Florida Helix at cryogenic temperatures, in both Voigt and Faraday geometries.
  • Numerical modeling of NV centers (optical Bloch equation), microcavities (transfer matrix method), and valence subbands in GaAs quantum wells (Luttinger-Kohn Hamiltonian) using Python and MATLAB.
  • Developed Python-based data acquisition utilities: Instrument communication library, confocal microscope graphical user interface.
Science Literacy Program Fellow
University of Oregon, Eugene, OR
  • Co-instructed PHYS 155, “Physics Behind the Internet”, a course for non-physics majors, in Fall 2015. With Eric Corwin.
Graduate STEM Fellow in K-12 Education (NSF GK-12)
University of Oregon, Eugene, OR
  • Piloted FOSS inquiry-based science curriculum in rural school districts (Boardman, Pendleton), grades 4-6. Daily team teaching during four 2-week stays as scientist in residence.
  • Guest scientist, Crow Middle/High School (2011). Supervised students preparing for EWEB solar car challenge. Developed curriculum on solar spectrum and filter functions.
  • Developed bicycle smoothie machine for Charlemagne Fox Hollow Elementary School, Eugene, OR. With Carrie Grabowski (2011, 2012, 2013, 2015).
Graduate Teaching Fellow
University of Oregon, Eugene, OR
  • Instructed three sections of tutorial recitation for PHYS 201-203, a three-term course in algebra-based general physics (2009-2010).
  • Grader for astronomy courses (2008-2009).
  • Tutor in the physics drop-in help center.
Summer 2008
Summer Undergraduate Research Fellow (SURF)
Optoelectronic Division, NIST, Boulder, CO

Adviser: Kevin Silverman.

  • Photoluminescence and annealing of self-assembled quantum dots.
  • Translated data-acquisition programs from MATLAB to Python.
Summer 2006
Summer Undergraduate Research Fellow (SURF)
Electromagnetic Division, NIST, Boulder, CO

Adviser: Pavel Kabos.

  • Finite-element modeling of a near-field microwave microscope using HFSS software.
  • Characterization of carbon nanotube samples using this microscope.
Mathematics Department Tutor
Grinnell College, Grinnell, IA
  • Helped students with calculus and linear algebra in the college math lab.
Student Worker and Manager
Grinnell Outdoor Recreation Program, Grinnell, IA
  • Led weeklong first-year orientation (2005, 2007), weekend trips, and indoor rock climbing sessions.
  • Activities Manager, Fall 2006.
  • Climbing Manager, Fall 2007.
Summers 2004, 2005
Technical Student Intern
Z Machine, Sandia National Laboratories, Albuquerque, NM

Adviser: Carlos Ruiz.

  • Surveyed activation products using gamma spectroscopy.
  • Fitting of neutron-yield data from nuclear fusion experiments.


Journal articles:

  1. D. Andrew Golter, Thomas K. Baldwin, and Hailin Wang. “Protecting a Solid-State Spin from Decoherence Using Dressed Spin States.” Physical Review Letters 113, 237601 (2014). DOI: 10.1103/PhysRevLett.113.237601
  2. Thomas K. Baldwin, Carey Phelps, Hailin Wang, and John P. Prineas. “Persistence of trions and quenching of excitons in optically induced two-dimensional electron gases in mixed-type GaAs/AlAs quantum wells.” Journal of the Optical Society of America B 31, 3138 (2014). DOI: 10.1364/JOSAB.31.003138
  3. Thomas K. Baldwin, Stephen A. McGill, and Hailin Wang. “Exciton-correlated hole tunneling in mixed-type GaAs quantum wells.” Physical Review B 90, 035304 (2014). DOI: 10.1103/PhysRevB.90.035304
  4. Atif Imtiaz, Thomas Baldwin, Hans T. Nembach, Thomas M. Wallis, and Pavel Kabos. “Near-field microwave microscope measurements to characterize bulk material properties.” Applied Physics Letters 90, 243105 (2007). DOI: 10.1063/1.2748307

Conference proceedings:

  1. David Golter, Thomas K. Baldwin, and Hailin Wang. “Suppression of Spin Dephasing in Diamond NV Centers with Microwave-Dressed Spin States.” Conference on Lasers and Electro-Optics 2014, FW1B.3 (2014). DOI: 10.1364/CLEO_QELS.2014.FW1B.3
  2. Thomas K. Baldwin, Stephen McGill, and Hailin Wang. “Manybody-Correlated Tunneling in Mixed-Type Quantum Wells at High Magnetic Field.” Conference on Lasers and Electro-Optics 2013, QM2D.2 (2013). DOI: 10.1364/CLEO_QELS.2013.QM2D.2
  3. Thomas K. Baldwin, Shannon O'Leary, and Hailin Wang. “Electromagnetically Induced Transparency of Spin Ensembles in a Two-Dimensional Electron Gas.” Conference on Lasers and Electro-Optics 2012, QM3G.5 (2012). DOI: 10.1364/QELS.2012.QM3G.5
  4. Timothy M. Sweeney, Thomas Baldwin, and Hailin Wang. “Probing Heavy-Hole and Light-Hole Excitonic Beats in a GaAs Quantum well with Phase-Locked Raman Pulse Pairs.” Conference on Lasers and Electro-Optics 2010, QFI4 (2010). DOI: 10.1364/QELS.2010.QFI4


PyData PDX, Portland, OR

Helped coordinate a monthly NumFOCUS-sponsored meetup series.

Search and Rescue Volunteer
Portland Mountain Rescue, Portland, OR

Support-level member.

Search and Rescue Volunteer
Eugene Mountain Rescue, Eugene, OR

Support-level member.

  • Helped organize practice sessions in backcountry navigation, snow travel, and low-angle rope systems.
  • Served on board of directors as training coordinator in 2017.
Eagle Scout