Håvard Reierstad
Research And Development Engineer at Nordic Semiconductor
Oslo, Norway
Summary
🤩
Rockstar🎓
Top SchoolHåvard Reierstad is an R&D engineer at Nordic Semiconductor with four years of embedded systems and IoT experience, specializing in Bluetooth Mesh development within Zephyr RTOS and the nRF Connect SDK. He holds an M.Sc. in Cybernetics and Robotics from NTNU with a specialization in Biomedicinal Cybernetics, bringing a strong control-systems and systems-integration mindset to wireless protocol work. At Nordic he moved from student and internship roles into R&D, contributing concrete fixes and feature additions—tests for Composition Data Page 1, mesh suspension/resumption, sensor sample persistence, and board support for nRF54L15. His open-source contributions touch widely used projects like Zephyr and nRF Connect, demonstrating both low-level protocol expertise and practical product-focused implementation. Colleagues note he combines academic rigor with hands-on tinkering—an engineer comfortable both writing protocol tests and adding shell commands to improve developer ergonomics.
4 years of coding experience
Norges teknisk-naturvitenskapelige universitet
Github Skills (17)
bluetooth-mesh10
zephyr-rtos10
bluetooth-le10
zephyr10
sys10
bluetooth10
embedded10
nrf-connect-sdk10
testing9
realtime9
c119
c179
bluetooth-low-energy8
embedded-language8
firmware8
Programming languages (2)
Github contributions (5)
zephyrproject-rtos/zephyr
Jul 2022 - Mar 2025
Primary Git Repository for the Zephyr Project. Zephyr is a new generation, scalable, optimized, secure RTOS for multiple hardware architectures.
Role in this project:
Embedded Systems Engineer / IoT Developer
Embedded Systems Engineer / IoT DeveloperContributions:168 reviews, 31 PRs, 164 comments in 2 years 9 months
Contributions summary:Håvard's contributions focused on the Bluetooth Mesh stack, specifically within the Zephyr RTOS project. Their work involved modifying core Bluetooth mesh functionalities, including implementing tests for Composition Data Page 1 (CDP1) encoding/decoding, and adding tests to verify suspension and resumption of Mesh functionality. These changes involved fixing model extensions, updating the handling of provisioning bearers, and improving advertising. The user also added commands to the shell for Bridge Configuration Client model.
bluetooth-lereal-timezephyrsecuregit-repository
nrfconnect/sdk-nrf
Sep 2022 - Sep 2022
nRF Connect SDK main repository
Role in this project:Embedded Systems Engineer / IoT Developer
Embedded Systems Engineer / IoT DeveloperContributions:89 reviews, 1 commit, 29 PRs in 1 day
Contributions summary:Håvard contributed extensively to the nRF Connect SDK, focusing on Bluetooth Mesh sensor samples. Their work involved implementing new features for the sensor sample, adding descriptors, and enabling persistent storage for sensor settings. They modified both client and server-side code, including modifications to model handlers and the sensor server's interaction with the Zephyr settings API. Further contributions include adding support for the nRF54L15 PDK board.
connect-sdknrf-connect-sdkinfinibandlteppp
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