We are currently looking for C Developer (Radio FW for IoT) that will be part of our international Core team (of 10 people*)* which is responsible for building services and integrating devices from Zigbee and possibly soon Matter networks into a high-level system. You will be in charge of developing our Silicon Labs SDK based firmware following Zigbee 3.0 standard.

This is a great job for a person with a passion for trying out new tools, reasearch existing development areas sharing ideas with the team, and putting in the effort to bring those ideas to life (you can use our systems at your home every day and see results of your work).


Developing IoT Radio FW using Silicon Labs SDK
Porting application to the most recent SDK
Improving monitoring of devices reachability in the ZIgbee netowork
Research: Investigate possibility to employ RCP solution from the Silicon Labs to run Matter and Zigbee networks simultanously
Adding new features and improving existing ones
Designing and developing IoT edge software modules that interact with sensors, and wireless communication devices
Designing software architecture and developing components required to communicate device to device & device to cloud
Rigorous revision controls of the software
Troubleshooting errors in wireless networks
Performing hands-on development and troubleshooting on embedded system
Contributing to maintaining high communication uptime for each device
Being capable to work unattended in a multilayer architecture once given clear direction
Discussing your ideas within a team to get the best solutions
Trainings and possibility to learn Go


Minimum 3 years of active development experience in C with safe coding skills
Experience with at least 2 projects
Theoretical knowledge of wireless communication (university or hands-on experience)
Practical experience with at least one of the wireless technologies like Zigbee/Thread (mostly prefered togheter with any other 802.15.4 based protocol), but also any other like Z-Wave, Bluetooth, Wi-Sun might be sufficient.
Strong command of English
Willingness to do some research regarding Matter technology and Radio co-processor (RCP)
Ability to work unattented on the project destined for one person


Experience with firmware from Silicon Labs
Experience in porting application to different SDK versions
General knowledge of operating systems
Good knowledge of either physics or automated control


Contract of employment or B2B
17 000 – 25 000 PLN monthly salary (gross/net on invoice)
On-site during ramp-up and hybrid later (Cracow’s office based at Jasnogorska 1 Street)
Multisport and language lessons (Norwegian and English)
Work equipment that makes work more comfortable
Learning and development budget
Share option program
Being part of non-corpo environment with relaxed, easy-going people and short decision path (with plenty of room for creativity!)
Opportunity to work on breakthrough projects with the latest IoT technologies
Opportunities for career advancement and professional development in a high-profile team
Great upskilling opportunities – option to participate in multiple learning initiatives, meetups, and internal projects

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