Embedded Software Engineer - UniFi Connect
About Ubiquiti
At Ubiquiti Inc., we create technology platforms for Businesses, Smart Homes, and Internet Service Providers, driven by our goal to connect everyone, everywhere. To date, Ubiquiti has shipped over 100 million devices worldwide, from ISP networking products to next generation of IT solutions. Our growth is made possible by the dedicated team of hundreds behind the scenes. From software developers and product managers to designers and strategists, Team UI is driven to achieve our common goal: Rethinking IT. At Ubiquiti, you’ll heighten your potential and broaden your horizons - all while shaping the future of connectivity.
Join forces with us on our mission to build a better IT industry. We are currently looking for a highly skilled Embedded Software Engineer to our team in Stockholm or Malmö, Sweden.
Please note that applicants must live in Sweden and hold a valid work permit at the time of application to be considered for this role.
Responsibilities:
Design, implement, and debug embedded firmware for 802.15.4 Thread-based devices (border routers, RCPs, sleepy/end devices) running on an RTOS and embedded Linux
Integrate and maintain the OpenThread stack and Matter commissioning/data-model layers across the product line
Work closely with hardware engineers on SoC/MCU bring-up and debug radio timing, RF, and low-power issues at the driver level
Implement and troubleshoot Thread border routing, SRP, and network commissioning/joining flows, including bridging to Wi-Fi/Ethernet backbones
Diagnose firmware-level issues using JTAG/SWD debuggers, logic analyzers, and protocol sniffers/packet captures
Write and maintain unit and integration tests; participate in code review
Contribute to OTA update pipelines and manufacturing/production test tooling
Requirements:
Strong proficiency in C++ (99 % code base) and C for embedded systems
Hands-on experience with an RTOS (FreeRTOS, Zephyr, or similar)
Solid MCU debugging skills
Solid networking fundamentals, including IPv6, TCP/UDP
Strong analytical and debugging skills; able to work independently and cross-functionally
Nice to have:
Embedded Linux experience
Linux kernel development experience
Practical experience with 802.15.4 Thread, or comparable low-power mesh wireless protocols (Zigbee, Bluetooth Mesh)
Experience with OpenWRT, Yocto, or Buildroot build systems
Matter/CHIP protocol experience
Direct experience with the OpenThread stack
Experience with vendor embedded SDKs (ESP-IDF, nRF Connect SDK, or similar)
Please note that a background check will be conducted in the final stage of the recruitment process