Embedded Wi-Fi Firmware Engineer

<div class="content-intro"><p></p> <p><strong>About Ubiquiti</strong></p> <p>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.&nbsp;At Ubiquiti, you’ll heighten your potential and broaden your horizons - all while shaping the future of connectivity.</p> <p></p></div><p><span style="font-family: helvetica, arial, sans-serif; font-size: 14pt;"><strong>The Position:</strong></span><br><span style="font-family: helvetica, arial, sans-serif; font-size: 12pt;">The Ubiquiti Kaunas office is looking for a talented and self-driven embedded C/C++ developer focused on Wi-Fi. You’ll bring experience, enthusiasm, and creativity to solve brand-new problems, think beyond the obvious, and make things work—even when the solution isn’t straightforward.</span><br><br><br><span style="font-family: helvetica, arial, sans-serif; font-size: 14pt;"><strong>Responsibilities:</strong></span></p> <ul> <li style="font-family: helvetica, arial, sans-serif; font-size: 12pt;"><span style="font-family: helvetica, arial, sans-serif; font-size: 12pt;">Build firmware for new Wi-Fi 6/6E/7 (802.11ax/be) access points and routers;</span></li> <li style="font-family: helvetica, arial, sans-serif; font-size: 12pt;"><span style="font-family: helvetica, arial, sans-serif; font-size: 12pt;">Collaborate with global firmware/hardware teams to deliver cutting-edge wireless networking products;</span></li> <li style="font-family: helvetica, arial, sans-serif; font-size: 12pt;"><span style="font-family: helvetica, arial, sans-serif; font-size: 12pt;">Develop and maintain user-space services and libraries (hostapd, wpa_supplicant integration, management daemons);</span></li> <li style="font-family: helvetica, arial, sans-serif; font-size: 12pt;"><span style="font-family: helvetica, arial, sans-serif; font-size: 12pt;">Integrate third-party components/SDKs (e.g., QCA/MediaTek) into our firmware and build system (OpenWrt-based);</span></li> <li style="font-family: helvetica, arial, sans-serif; font-size: 12pt;"><span style="font-family: helvetica, arial, sans-serif; font-size: 12pt;">Maintain and improve existing product firmware (stability, performance, security);</span></li> <li style="font-family: helvetica, arial, sans-serif; font-size: 12pt;"><span style="font-family: helvetica, arial, sans-serif; font-size: 12pt;">Work closely with HW/RF engineers on bring-up, calibration, board support, and issue investigation;</span></li> <li style="font-family: helvetica, arial, sans-serif; font-size: 12pt;"><span style="font-family: helvetica, arial, sans-serif; font-size: 12pt;">Optimize wireless performance: roaming (802.11k/v/r), mesh/EasyMesh, airtime fairness, OFDMA/MU-MIMO, DFS/ACS, QoS/WMM;</span></li> <li style="font-family: helvetica, arial, sans-serif; font-size: 12pt;"><span style="font-family: helvetica, arial, sans-serif; font-size: 12pt;">Diagnose complex field issues using logs, packet captures, and on-device tracing/profiling.</span></li> </ul> <p><span style="font-family: helvetica, arial, sans-serif; font-size: 14pt;"><strong>Requirements:</strong></span></p> <ul> <li style="font-family: helvetica, arial, sans-serif; font-size: 12pt;"><span style="font-family: helvetica, arial, sans-serif; font-size: 12pt;">3+ years of embedded firmware development in C/C++;</span></li> <li style="font-family: helvetica, arial, sans-serif; font-size: 12pt;"><span style="font-family: helvetica, arial, sans-serif; font-size: 12pt;">Solid understanding of Linux internals (Process, memory, networking, netlink, epoll);</span></li> <li style="font-family: helvetica, arial, sans-serif; font-size: 12pt;"><span style="font-family: helvetica, arial, sans-serif; font-size: 12pt;">Strong networking fundamentals: TCP/UDP, routing (static/dynamic), firewalls (iptables/nftables), traffic control (tc);</span></li> <li style="font-family: helvetica, arial, sans-serif; font-size: 12pt;"><span style="font-family: helvetica, arial, sans-serif; font-size: 12pt;">Experience with Wi-Fi stack concepts (802.11 a/b/g/n/ac/ax/be), WPA2/WPA3 security, EAP/SAE;</span></li> <li style="font-family: helvetica, arial, sans-serif; font-size: 12pt;"><span style="font-family: helvetica, arial, sans-serif; font-size: 12pt;">Comfortable with Git and typical embedded build systems (OpenWrt/Buildroot, cross-compilation, toolchains);</span></li> <li><span style="font-family: helvetica, arial, sans-serif; font-size: 12pt;">Experience with AI tools - Claude, Codex, etc;</span></li> <li style="font-family: helvetica, arial, sans-serif; font-size: 12pt;"><span style="font-family: helvetica, arial, sans-serif; font-size: 12pt;">Fluent in English and Lithuanian.</span></li> </ul> <p><span style="font-family: helvetica, arial, sans-serif; font-size: 14pt;"><strong>Nice to have:</strong></span></p> <ul> <li style="font-family: helvetica, arial, sans-serif; font-size: 12pt;"><span style="font-family: helvetica, arial, sans-serif; font-size: 12pt;">Linux wireless/driver experience (mac80211/cfg80211, NL80211); familiarity with ath10k/ath11k/mt76;</span></li> <li style="font-family: helvetica, arial, sans-serif; font-size: 12pt;"><span style="font-family: helvetica, arial, sans-serif; font-size: 12pt;">Hands-on with hostapd/wpa_supplicant customization and control interfaces;</span></li> <li style="font-family: helvetica, arial, sans-serif; font-size: 12pt;"><span style="font-family: helvetica, arial, sans-serif; font-size: 12pt;">Experience with chipset SDKs (Qualcomm Atheros, MediaTek) and board bring-up;</span></li> <li style="font-family: helvetica, arial, sans-serif; font-size: 12pt;"><span style="font-family: helvetica, arial, sans-serif; font-size: 12pt;">RF basics and validation: link budget/SNR/MCS, spectral scan, regulatory domains (FCC/ETSI), DFS certification;</span></li> <li style="font-family: helvetica, arial, sans-serif; font-size: 12pt;"><span style="font-family: helvetica, arial, sans-serif; font-size: 12pt;">Mesh networking (802.11s/EasyMesh), band/steering, roaming optimization (k/v/r);</span></li> <li style="font-family: helvetica, arial, sans-serif; font-size: 12pt;"><span style="font-family: helvetica, arial, sans-serif; font-size: 12pt;">Traffic analysis/diagnostics with Wireshark, tcpdump, radiotap, iPerf3, IxChariot; automated test frameworks;</span></li> <li style="font-family: helvetica, arial, sans-serif; font-size: 12pt;"><span style="font-family: helvetica, arial, sans-serif; font-size: 12pt;">Python/Bash for tooling, CI/CD familiarity, DPI/traffic classification exposure.</span></li> </ul> <p><span style="font-family: helvetica, arial, sans-serif; font-size: 14pt;"><strong>Benefits:</strong></span></p> <ul> <li style="font-family: helvetica, arial, sans-serif; font-size: 12pt;"><span style="font-family: helvetica, arial, sans-serif; font-size: 12pt;">International work environment and work with global development teams;</span></li> <li style="font-family: helvetica, arial, sans-serif; font-size: 12pt;"><span style="font-family: helvetica, arial, sans-serif; font-size: 12pt;">Ability to deliver software that is used by millions of people across the globe;</span></li> <li style="font-size: 12pt;"><span style="font-size: 12pt;">Opportunity to leverage and integrate modern AI tools into product development;</span></li> <li style="font-family: helvetica, arial, sans-serif; font-size: 12pt;"><span style="font-family: helvetica, arial, sans-serif; font-size: 12pt;">Access to all Ubiquiti products;</span></li> <li style="font-family: helvetica, arial, sans-serif; font-size: 12pt;"><span style="font-family: helvetica, arial, sans-serif; font-size: 12pt;">Medical insurance;</span></li> <li style="font-family: helvetica, arial, sans-serif; font-size: 12pt;"><span style="font-family: helvetica, arial, sans-serif; font-size: 12pt;">Hybrid approach - office in Kaunas;</span></li> <li style="font-family: helvetica, arial, sans-serif; font-size: 12pt;"><span style="font-family: helvetica, arial, sans-serif; font-size: 12pt;">Flexible work hours;</span></li> <li style="font-family: helvetica, arial, sans-serif; font-size: 12pt;"><span style="font-family: helvetica, arial, sans-serif; font-size: 12pt;">Compensation package matching global standards, including competitive salary depending on your qualification and background (starting from 3000 up to 7000 Euro gross monthly);</span></li> <li style="font-family: helvetica, arial, sans-serif; font-size: 12pt;"><span style="font-family: helvetica, arial, sans-serif; font-size: 12pt;">A-class office with all the necessities - snacks, drinks, free lunches,&nbsp;free parking, etc!</span></li> </ul>