Senior Firmware Engineer

Established in 1997, Softeq was built from the ground up to specialize in new product development and R&D, tackling the most difficult problems in the tech sphere. Now we've expanded to offer early-stage innovation and ideation plus digital transformation business consulting. Our superpower is to deliver all of this under one roof on a global scale. So let's get started and build a better future together!

Softeq is looking for a Senior Firmware Engineer in the Embedded Systems department.

We're building new silicon based product: the Nordic nRF7120 (Wi-Fi 6 + Bluetooth LE + companion cellular) running Zephyr via the nRF Connect SDK and looking for the primary Zephyr voice on the team.

This position will require firmware architecting and in collaboration with multi-disciplinary team design and development a single shared business-logic core, serves both, the incumbent STM32 platform and the new Nordic platform for years to come.

Salary Range: €65,000.00 To €80,000.00 Annually

Responsibilities:

• Own firmware on the nRF7120 / Zephyr NCS platform: DK bring-up, Kconfig + device tree structure, thread topology, little fs storage, MCU boot/DFU;
• Build native Zephyr connectivity: Wi-Fi, Bluetooth host, and cellular via the Zephyr modem subsystem;
• Own firmware observability with Memfault: coredumps, metrics, OTA campaigns, alerting — a first-class quality-and-velocity investment for the whole team;
• Set the bar for firmware quality: host-build CI as a compile firewall, unit-testable C with injectable fakes, replay-harness behavior-preservation;
• Collaborate with hardware, software, QA, and system engineering teams.

Requirements:

• 8+ years hands-on embedded firmware, including 3+ years shipping production Zephyr / nRF Connect SDK code on real hardware ;
• nRF7120 (rare) or adjacent nRF52/nRF53/nRF91 experience;
• Production fluency in Kconfig and device tree ;
• Zephyr Bluetooth host with real GATT-service porting, native Zephyr Wi-Fi, cellular over the modem subsystem;
• Nordic Semiconductor MCU and hardware peripherals experience (e.g. PWM, ADC, DAC, CAN, UART, etc.);
• West, deep C99/C11, CMake, git;
• Production Memfault experience;
• Experience with firmware-level power optimization techniques;
• You use AI-assisted coding tools (Claude Code, Cursor, Copilot) in daily work;
• Experience with firmware-level power optimization techniques;
• Consumer IoT consumer-connected-hardware device firmware background (wearables, trackers, connected devices);
• Real overlap with CET/EET business hours; a long-term (2+ year) commitment;
• English language written and verbal communication skills (min. B2 level);
• Bachelor’s degree in Computer Science, Electrical Engineering or related field.

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