Walter Hagstrom
Principal Software Engineer at Digi International, Inc
Quincy, Massachusetts, United States
Summary
👤
Senior🎓
Top SchoolWalter Hagstrom is a Principal Software Engineer with over 25 years of hands-on experience building embedded Linux systems, cellular routers, and wireless/USB device drivers, currently leading software development at Digi International. He specializes in C-based embedded development across the full lifecycle—kernel and driver bring-up, user-space applications, automated builds and testing—and complements that with Java and Python for higher-level tooling and cloud integrations. Walter has delivered production cellular solutions spanning 5G SA/NSA, LTE Advanced and legacy 3G, and has led platform ports to Freescale i.MX and ARM9-based ASICs running RTOS. He blends deep low-level debugging (using USB analyzers and oscilloscopes) with architectural work like refactoring for maintainability and applying design patterns in C. A pragmatic mentor and Agile advocate, he also has experience enabling cloud-managed fleets of Fedora-based remote devices and developing sensor gateways using ZigBee. Based in Quincy, MA, he pairs vintage expertise in embedded/assembly systems with modern cloud-connected product engineering.
14 years of coding experience
6 years of employment as a software developer
Master of Science (MS) Computer Science, Master of Science (MS) Computer Science at UMass BostonElectrical Engineering BSEE Integrated Circuit Design, Electrical Engineering BSEE Integrated Circuit Design at Northeastern University
Github Skills (6)
modem5
azerothcore4
gitweb4
kebab-case4
gitignore3
git-client2
Programming languages (1)
Github contributions (5)
whagstro/ModemManager-1
Sep 2021 - Sep 2021
Contributions:3 pushes, 1 branch in 2 days
whagstro/libqmi
Jun 2020 - Jun 2020
QMI modem protocol helper library
Contributions:9 pushes, 1 branch in 1 day
modemhelper-library
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