Embedded Firmware Engineer

Weare5vtech; Bristol; Hybrid; GBP 40,000 - 60,000; Part time

Job summary

A leading tech company in Bristol seeks an Embedded Firmware Engineer for a hybrid part-time role, with the potential to transition to full-time next year. Responsibilities include designing low-power C++ firmware and building robust connectivity features. Ideal candidates will have strong experience in embedded systems and a solid grasp of RTOS fundamentals. Apply now to discuss further opportunities.

Qualifications

• Strong experience developing embedded systems with modern C++ on MCUs.
• Experience with BLE features in production devices.
• Solid understanding of RTOS fundamentals.

Responsibilities

• Design and develop low-power C++ firmware.
• Build robust connectivity features across BLE and LTE-M/NB-IoT.
• Implement diagnostics and fault-tolerant systems.

Skills

Embedded systems development with modern C++

BLE features delivery in production

Cellular IoT expertise (LTE-M/NB-IoT)

RTOS fundamentals

Hands-on with Nordic SDK/Zephyr

Tools

Nordic SDK

Zephyr

nRF Connect

Job description

Embedded Firmware Engineer

Amsterdam, the Netherlands — Hybrid Working — Initial part-time contract: 2-3 days per week — Option to join full-time in 2026.

This Initial engagement is part-time, with scope to discuss a full-time role next year as the team grows.

What you’ll do…

• Design and develop low-power C++ firmware on Nordic nRF platform in an RTOS environment.
• Build robust connectivity features across BLE and LTE-M/NB-IoT.
• Implement diagnostics, logging, and fault-tolerant boot/rollback for field devices.
• Collaborate with embedded, app, and cloud engineers to define protocols and test strategies.

Skills you have…

• Strong experience developing embedded systems with modern C++ on MCUs.
• Delivery of BLE features in production devices.
• Experience with cellular IoT (LTE-M/NB-IoT), sockets/TLS, and constrained networking.
• Solid RTOS fundamentals: scheduling, ISR vs threads, memory management, watchdogs, and low-power design.
• Bonus: hands-on with Nordic SDK/Zephyr, nRF Connect, and common toolchains/debuggers.

If you are looking for the opportunity to build disruptive products, then Apply Now to discuss the details further!

5V Tech are acting as an Employment Agency for the purposes of this position. We offer a reward scheme if you can recommend someone for this position—€250 for you and €250 to a charity of your choice. 5V Tech are recognised talent solutions experts within IoT and Deep Tech, working across Europe, the UK, and North America.