Tommi Rantanen
Senior R&D Engineer at Nordic Semiconductor ASA
Tampere, Pirkanmaa, Finland
Summary
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Rockstar🎓
Top SchoolTommi Rantanen is a Senior R&D Engineer with a strong 5+ year track record in embedded and mobile systems, rooted in deep C/C++ expertise and demanding software architecture. He has repeatedly solved shifting, low-level integration challenges for companies like Nordic Semiconductor, Qualcomm and Nokia, with particular strength in power/thermal management, battery charging and connectivity protocols across GSM/UMTS/LTE/WiFi and TCP/IP. Tommi has driven customer board bring-ups, contributed to standards (IEEE 802.16 / WiMAX Forum) and holds patents in WiMAX, reflecting both practical and standards-level impact. At Nordic he enhanced the nRF Connect SDK by adding robust SMS handling and unit tests, showing attention to edge cases like UCS2 decoding and malformed-message recovery. Fast to learn new languages and tools, he pairs hands-on debugging (Lauterbach experience) with clear technical documentation and cross-team communication. Based in Tampere, he blends research-stage rigour from his TUT background with production-grade engineering in mobile connectivity.
5 years of coding experience
16 years of employment as a software developer
MSc, Software Engineering, MSc, Software Engineering at Tampere University of Technology
Github Skills (5)
firmware10
embedded10
c-programming10
sys10
unit-testing9
Programming languages (2)
Github contributions (5)
nrfconnect/sdk-nrf
Apr 2021 - Jan 2023
nRF Connect SDK main repository
Role in this project:
Back-end Developer
Back-end DeveloperContributions:2476 reviews, 110 commits, 178 PRs in 1 year 9 months
Contributions summary:Tommi primarily contributed to the SMS sending and receiving library, adding support for SMS sending, decoding received messages, and providing an SMS sample. The user also implemented unit tests for the SMS library and improved error logging, particularly for UCS2-encoded messages. Furthermore, the developer addressed an issue related to the SMS service getting stuck by acknowledging malformed SMS messages to maintain service functionality.
connect-sdknrf-connect-sdkinfinibandlteppp
trantanen/sdk-nrf
Jan 2021 - Apr 2025
nRF Connect SDK main repository
Contributions:1225 pushes, 295 branches in 4 years 3 months
connect-sdknrf-connect-sdklteinfinibandnetbox
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