Join us. Rethink IT.

The Position:
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.


Responsibilities:

• Build firmware for new Wi-Fi 6/6E/7 (802.11ax/be) access points and routers;
• Collaborate with global firmware/hardware teams to deliver cutting-edge wireless networking products;
• Develop and maintain user-space services and libraries (hostapd, wpa_supplicant integration, management daemons);
• Integrate third-party components/SDKs (e.g., QCA/MediaTek) into our firmware and build system (OpenWrt-based);
• Maintain and improve existing product firmware (stability, performance, security);
• Work closely with HW/RF engineers on bring-up, calibration, board support, and issue investigation;
• Optimize wireless performance: roaming (802.11k/v/r), mesh/EasyMesh, airtime fairness, OFDMA/MU-MIMO, DFS/ACS, QoS/WMM;
• Diagnose complex field issues using logs, packet captures, and on-device tracing/profiling.

Requirements:

• 3+ years of embedded firmware development in C/C++;
• Solid understanding of Linux internals (Process, memory, networking, netlink, epoll);
• Strong networking fundamentals: TCP/UDP, routing (static/dynamic), firewalls (iptables/nftables), traffic control (tc);
• Experience with Wi-Fi stack concepts (802.11 a/b/g/n/ac/ax/be), WPA2/WPA3 security, EAP/SAE;
• Comfortable with Git and typical embedded build systems (OpenWrt/Buildroot, cross-compilation, toolchains);
• Fluent in English and Lithuanian.

Nice to have:

• Linux wireless/driver experience (mac80211/cfg80211, NL80211); familiarity with ath10k/ath11k/mt76;
• Hands-on with hostapd/wpa_supplicant customization and control interfaces;
• Experience with chipset SDKs (Qualcomm Atheros, MediaTek) and board bring-up;
• RF basics and validation: link budget/SNR/MCS, spectral scan, regulatory domains (FCC/ETSI), DFS certification;
• Mesh networking (802.11s/EasyMesh), band/steering, roaming optimization (k/v/r);
• Traffic analysis/diagnostics with Wireshark, tcpdump, radiotap, iPerf3, IxChariot; automated test frameworks;
• Python/Bash for tooling, CI/CD familiarity, DPI/traffic classification exposure.

Benefits:

• International work environment and work with global development teams;
• Ability to deliver software that is used by millions of people across the globe;
• Access to all Ubiquiti products;
• Medical insurance;
• Hybrid approach - office in Kaunas;
• Flexible work hours;
• Compensation package matching global standards, including competitive salary depending on your qualification and background (starting from 3000 up to 7000 Euro gross monthly);
• A-class office with all the necessities - snacks, drinks, free lunches, free parking, etc!