balena-os/balena-owa5x
Feb 2026 – Jun 2026
4 Months active
Languages Used
PythonCCoffeeScriptNoneShellplaintextbashMakefile
Technical Skills
embedded systemsfirmware developmentnetwork configurationBuild SystemsC programmingConfiguration Management
Alvaro Guzman
PROFILE
Alvaro Guzman
Worked on the balena-os/balena-owa5x repository, delivering features and fixes across embedded Linux, networking, and firmware development. Built connectivity toolkits for SIM switching and WiFi configuration, automated APN injection for cellular modems, and optimized image build and flashing workflows to accelerate device provisioning. Addressed kernel driver and systemd integration issues to stabilize network behavior and improve device onboarding. Used C, Shell scripting, and Yocto Project to implement solutions such as ECM-mode routing, udev rule management, and bootloader updates. The work emphasized reliability, security hardening, and maintainability, reducing deployment risk and support overhead for multi-network embedded device fleets.
Overall Statistics
Feature vs Bugs
55%Features
Repository Contributions
37Total
Bugs
14
Commits
37
Features
17
Lines of code
1,706
Activity Months4
Your Network
7 peopleShared Repositories
7
Aitor Nieto owzang@porowzangMember
Alex GonzalezMember
Edwin JoassartMember
Florin SarbuMember
Guillermo Vega GonzálezMember
Kyle HardingMember
Ryan CookeMember
Work History
June 2026
2 Commits • 1 Features
Jun 1, 2026June 2026: For balena-os/balena-owa5x, delivered two critical networking improvements that reduce provisioning steps and stabilize connections. Implemented automatic APN injection after ECM mode via a systemd service, enabling consistent cellular configuration by parsing NetworkManager profiles and injecting APN with mmcli. Also disabled WiFi Direct handling in the mwifiex driver to prevent NetworkManager from proliferating P2P devices, which previously caused hotspot connection instability. These changes improve device onboarding, reduce support burden, and yield more predictable network behavior in field deployments. Technologies demonstrated include systemd services, mmcli API usage, kernel driver configuration, and NetworkManager integration.
2 Commits • 1 Features
Jun 1, 2026June 2026: For balena-os/balena-owa5x, delivered two critical networking improvements that reduce provisioning steps and stabilize connections. Implemented automatic APN injection after ECM mode via a systemd service, enabling consistent cellular configuration by parsing NetworkManager profiles and injecting APN with mmcli. Also disabled WiFi Direct handling in the mwifiex driver to prevent NetworkManager from proliferating P2P devices, which previously caused hotspot connection instability. These changes improve device onboarding, reduce support burden, and yield more predictable network behavior in field deployments. Technologies demonstrated include systemd services, mmcli API usage, kernel driver configuration, and NetworkManager integration.
June 2026
May 2026
10 Commits • 3 Features
May 1, 2026May 2026 summary for balena-os/balena-owa5x: Delivered ECM-mode routing for onboard Quectel EG25-G modem enabling TCP/IP sharing for the host, with udev ModemManager rule updates and a systemd service to enforce ECM mode after OTA, plus adjustments to ttyUSB handling. Achieved faster BalenaOS uSD flashing by reducing sleep times and LED loop duration. Streamlined image build workflow by moving fingerprint removal logic to preprocessing, reducing post-processing overhead. Implemented bootloader name consistency fix and refined fingerprint handling to prevent update-related fingerprint errors. Restored os-release NAME field and stabilized Autokit rig tests to improve reliability. These efforts deliver tangible business value: improved remote connectivity, faster provisioning, and more reliable builds and tests across the device family.
May 2026
10 Commits • 3 Features
May 1, 2026May 2026 summary for balena-os/balena-owa5x: Delivered ECM-mode routing for onboard Quectel EG25-G modem enabling TCP/IP sharing for the host, with udev ModemManager rule updates and a systemd service to enforce ECM mode after OTA, plus adjustments to ttyUSB handling. Achieved faster BalenaOS uSD flashing by reducing sleep times and LED loop duration. Streamlined image build workflow by moving fingerprint removal logic to preprocessing, reducing post-processing overhead. Implemented bootloader name consistency fix and refined fingerprint handling to prevent update-related fingerprint errors. Restored os-release NAME field and stabilized Autokit rig tests to improve reliability. These efforts deliver tangible business value: improved remote connectivity, faster provisioning, and more reliable builds and tests across the device family.
April 2026
24 Commits • 12 Features
Apr 1, 2026April 2026 (2026-04) monthly wrap-up for balena-os/balena-owa5x. Delivered Scarthgap-ready BalenaOS images and substantial hardware/boot/runtime improvements across Yocto, kernel, and supervisor layers. Focused on reliability, security hardening, and multi-machine support to accelerate customer value and reduce deployment risk.
24 Commits • 12 Features
Apr 1, 2026April 2026 (2026-04) monthly wrap-up for balena-os/balena-owa5x. Delivered Scarthgap-ready BalenaOS images and substantial hardware/boot/runtime improvements across Yocto, kernel, and supervisor layers. Focused on reliability, security hardening, and multi-machine support to accelerate customer value and reduce deployment risk.
April 2026
February 2026
1 Commits • 1 Features
Feb 1, 2026February 2026: Delivered Connectivity Toolkit for balena-owa5x to enhance device connectivity options through SIM switching and WiFi module configuration. This work introduces binary tools and a parameterizable WiFi configurator, reducing network setup time and enabling flexible deployments across multi-network environments.
February 2026
1 Commits • 1 Features
Feb 1, 2026February 2026: Delivered Connectivity Toolkit for balena-owa5x to enhance device connectivity options through SIM switching and WiFi module configuration. This work introduces binary tools and a parameterizable WiFi configurator, reducing network setup time and enabling flexible deployments across multi-network environments.
Activity
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Quality Metrics
Correctness96.8%
Maintainability93.0%
Architecture93.6%
Performance93.0%
AI Usage21.6%
Skills & Technologies
Programming Languages
CCoffeeScriptMakefileNonePythonShellbashplaintext
Technical Skills
Build SystemsC programmingConfiguration ManagementContinuous IntegrationDevOpsDevice ConfigurationEmbedded SystemsFirmware DevelopmentImage ProcessingIoT developmentLinuxLinux DevelopmentLinux System AdministrationLinux kernelLinux kernel development
Repositories Contributed To
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