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Senior Embedded Software Engineer

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Ohme is a cleantech venture focused on making the switch to sustainable transport and energy faster, easier, and more affordable through their intelligent energy platform.
London, UK
Senior Software Engineer
5+ years


Ohme is on a mission to accelerate the transition to sustainable transport and energy. They are seeking a Senior Embedded Software Engineer to join their rapidly growing team. The ideal candidate will have extensive experience in C software development for embedded systems, with a strong background in microcontrollers, digital electronics, and low-level interfaces.

The role involves designing, coding, and testing firmware for embedded systems, contributing to codebase improvements, and maintaining released products. The engineer will also be responsible for building and maintaining automated testing harnesses and providing high-level support for hardware and firmware issues.

Ohme operates at the intersection of energy and transport, using technology and data integrations to connect cars, chargers, and energy providers. They have partnerships with major brands like Octopus Energy and Volkswagen UK, and are expanding their operations across multiple countries.

The company offers a competitive benefits package, including private health insurance, pension scheme, and various allowances. Ohme values diversity and inclusion, encouraging a culture where everyone can be themselves at work.

This is an excellent opportunity for a skilled embedded software engineer to join a fast-paced, sustainability-focused scale-up with global ambitions. The ideal candidate will embody Ohme's values of moving fast, being brave, pushing the bar, taking ownership, and being transparent.

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  • Design, Code and Test firmware for embedded systems
  • Contribute to the improvement of the structure and design of the codebase for future scalability
  • Maintain released products
  • Provide third-level support, debug and identify root-causes with hardware and firmware issues
  • Build and maintain an automated testing harness for embedded system devices
  • Create and execute manual and automated test cases


  • More than 5 years' experience of C software development in embedded environment
  • Experience developing low level software on microcontrollers e.g. STM32 and FreeRTOS
  • Understanding of Digital Electronics and interfacing hardware with firmware
  • Strong experience with electronics, analogue data capture and processing
  • Strong working experience in low level interfaces, particularly CAN
  • Working experience in wireless communications, particularly for HTTPS and WebSockets over cellular and WiFi
  • Good verbal and written communication skills
  • Experience of the software development lifecycle
  • Good university degree, ideally in computer science or electronic engineering


Medical Insurance
Dental Insurance
Vision Insurance
  • Competitive salary and bonus
  • Private Health Insurance
  • Aegon Pension Scheme
  • Life Assurance Scheme with death in service benefit of 4x salary
  • Income Protection Scheme for long term illness
  • Ride to Work Scheme
  • Payroll Giving Scheme
  • Season Ticket Loan to spread cost of travel over 12 months
  • Eye Test every 2 years

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