Senior Firmware Engineer, Converge
£58.5-65k
2-5 days a week in office (Blackfriars, London)
AI and cloud-based technologies for construction
Job no longer available
AI and cloud-based technologies for construction
21-100 employees
Job no longer available
£58.5-65k
2-5 days a week in office (Blackfriars, London)
21-100 employees
Company mission
Converge's mission is to build the future more efficiently, safely, and sustainably, by the digitising physical reality of construction.
Role
Who you are
- The ideal candidate will have extensive experience with Zephyr RTOS, Bluetooth Low Energy (BLE), and LoRaWAN, with a proven track record of successfully taking products from design to mass manufacturing, to long term maintenance
- 5+ years of firmware engineering experience, with at least 2 years working with Zephyr RTOS
- Proficiency in C/C++ for embedded development
- Experience with ARM Cortex-M microcontrollers and associated toolchains
- Solid understanding of embedded software development best practices, including version control (Git), CI/CD pipelines, and automated testing
- Proven track record of shipping products from concept to high-volume manufacturing
Desirable
- Expertise in Bluetooth Low Energy (BLE), including GATT, GAP, and power optimization techniques
- Strong knowledge of LoRaWAN stack, including device provisioning, network architecture, and radio performance tuning
- Experience working with DFU (Device Firmware Update) mechanisms and over-the-air updates. Familiarity with wireless certification processes (FCC, CE, etc.) and compliance testing
- Experience with secure bootloaders, cryptographic protocols, and embedded security
- Knowledge of sensor interfacing protocols (SPI, I2C, UART, CAN, etc.)
- Exposure to low-power design techniques for battery-operated devices
- Experience with cloud integration and edge computing
- Strong problem-solving skills and ability to work in a fast-paced environment
What the job involves
- We are looking for a highly skilled Senior Firmware Engineer to join our team and play a key role in developing embedded systems for IoT products
- Design, develop, and optimise firmware for embedded systems using Zephyr RTOS
- Implement and maintain BLE and LoRaWAN based communication protocols
- Work closely with hardware engineers to integrate firmware with custom hardware platforms
- Develop and execute unit tests, integration tests, and validation frameworks
- Optimise power consumption and memory footprint for embedded devices
- Troubleshoot and debug complex firmware issues using JTAG, oscilloscopes, logic analyzers, and protocol sniffers
- Collaborate with cross-functional teams including software, hardware, and product management to define and deliver product requirements
- Lead the firmware release cycle, including version control, documentation, and deployment for manufacturing
- Support manufacturing and production testing, ensuring firmware stability and performance in high-volume production environments
Salary benchmarks
Our take
Converge’s immediate focus has been to help civil engineers on construction sites better monitor concrete strength. Since its founding, Converge has deployed thousands of sensors across the UK, helping hundreds of engineers do their job more efficiently, and building deep insight and expertise in the construction industry by connecting the physical environment.
Construction work involving concrete typically requires manual monitoring, lab tests, waiting games and over-pouring. It’s inefficient, expensive and damaging to the environment. Converge’s flagship product helps to avoid all this.
It is able to use the data collected from its portfolio of projects to predict future concrete behaviour. London City Airport was the first commercial project that combined data including temperature readings from the concrete with local weather forecasts, to give a prediction of when the concrete will reach strength.
Converge's ambition is to reduce average cement content in concrete by 15%, estimating a 26 megaton carbon emissions reduction per year by 2030. It is currently expanding its suite of modules to include the optimisation of construction logistics and structural health.
Freddie
Company Specialist at Welcome to the Jungle
Insights
Company
Funding (2 rounds)
May 2025
$24.8m
LATE VC
May 2022
$18.8m
SERIES A
Total funding: $43.6m
Company benefits
- 33 days annual leave (incl. bank holidays)
- Closed over the end-of-year holidays
- Flexible working options
- Enhanced Parental Leave
- Open communication across departments
- Training and development opportunities
- Regular company outings and events. E.g. Craft Beer Fridays
Company HQ
City of London, London, UK
Leadership
Raphael Scheps
(CEO & Co-Founder)Studied maths and physics at Cambridge before working as an engineer at Mellanox Technologies and then a researcher at the Weizmann Institute.
Gideon Farrell
(CTO & Co-Founder)Studied astrophysics at Cambridge before working as a researcher for Intel's WISP and then at the Weizmann Institute.
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