Senior Firmware Engineer

Softeq; United States; Remote; USD 140,000 - 190,000; Full time

Job summary

Softeq is seeking a Senior Firmware Engineer for its Embedded Systems team in the United States. You will architect and own firmware for the Nordic nRF7120 using Zephyr via the nRF Connect SDK, supporting both the existing STM32 platform and new Nordic hardware for years ahead.

Responsibilities include DK bring-up, Kconfig and device tree management, and implementing native Zephyr connectivity (Wi-Fi, Bluetooth, modem).

Qualifications

• 8+ years hands-on embedded firmware experience.
• 3+ years shipping Zephyr/nRF Connect SDK on real hardware.
• Proficiency with Kconfig and device tree.
• Zephyr Bluetooth host and Wi-Fi experience on real devices.

Responsibilities

• Own firmware on nRF7120/Zephyr with DK bring-up and device tree structure.
• Develop native Zephyr connectivity: Wi-Fi, Bluetooth host, cellular via modem subsystem.
• Improve firmware observability with Memfault (coredumps, metrics, OTA).
• Maintain high firmware quality with CI, unit tests, and injectable fakes.
• Collaborate with hardware, software, QA and systems teams.

Skills

Embedded firmware

Zephyr

nRF Connect SDK

Kconfig

Device tree

Bluetooth

Wi-Fi

CI/CD

C programming

Power optimization

English communication

Education

Bachelor's degree in CS/EE

Tools

nRF7120

nRF52/53/91x

Zephyr RTOS

nRF Connect SDK

Job description

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.

Responsibilities:

• Own firmware on the nRF7120 / ZephyrNCS 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.);
• 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.

Softeq communicates only from @ softeq.com email addresses. We never request payments or fees for any reason during hiring — including trainings or courses to be completed, equipment, onboarding, or background checks — and we will not ask for banking information, cryptocurrency or gift cards. If you receive a message from any other domain or requesting payment, do not respond and report it to [e-mail]