TL;DR

Senior Firmware Engineer (Embedded IoT): Design, develop, and optimize embedded firmware for Vehicle-to-Grid (V2G) systems with an accent on grid compliance, scalability, and over-the-air upgradability. Focus on developing production-ready firmware, debugging in real-world EV and grid contexts, and collaborating with cross-functional teams including hardware and compliance.

Location: London, United Kingdom

Company

%hirify_global% is a fast-growing UK startup focused on innovative EV charging and grid management solutions, recognized as one of the fastest growing companies in the UK and EMEA.

What you will do

Design and optimize embedded firmware for V2G systems and peripherals including ISO 15118/IEC 61851, SPI, I2C, RS-485, and Ethernet.
Develop scalable, maintainable firmware with focus on grid compliance and over-the-air updates.
Collaborate with hardware, power electronics, and compliance teams to meet safety and certification requirements.
Perform in-depth debugging using protocol and power analyzers in EV and grid-connected environments.
Support factory test firmware and diagnostics for reliable mass production.
Document firmware design, architecture, and regulatory considerations.

Requirements

Location: Must be based in or able to work onsite in London, United Kingdom
Strong experience in embedded firmware development, especially in energy or power electronics.
Proficiency in embedded C/C++ and deep understanding of Linux TCP/IP stack.
Experience with V2G communication protocols such as ISO 15118, OCPP, or IEC 61850.
Competent with debugging tools and version control (Git) and CI/CD workflows.
Ability to collaborate across cross-functional teams including power and compliance engineers.

Nice to have

Experience with embedded Linux environments (Yocto) and cloud backend integration.
Scripting skills in Python for automation and production support.
Background in energy metering, grid synchronization, and safety-critical firmware development (ASIL, SIL).