Development Engineer

myenergi Ltd; Stallingborough; On-site; GBP 65,000 - 90,000; Full time

Benefits offered by this job

Employee Wellbeing Package

Free fruit

Yoga sessions

Birthday leave

25 days annual leave

Job summary

myenergi Ltd seeks a senior development engineer to own end-to-end firmware and hardware design, from specification to delivery. You will mentor junior engineers and collaborate across firmware, hardware, QA and compliance teams.

You will write bare-metal firmware for ARM Cortex-M, design circuits, validate interfaces, and help shape product evolution across the HEMS range. The role requires autonomous, cross-domain thinking and leadership.

Qualifications

• Solid production-quality embedded C firmware experience for real-time MCUs.
• Hardware lifecycle design including schematic capture and PCB layout.
• Comfort with cross-domain firmware-hardware boundaries and complex schematics.

Responsibilities

• Write, test and maintain embedded firmware for ARM Cortex-M and other MCUs.
• Design and document analogue/digital circuits for embedded hardware.
• Lead cross-domain projects and mentor junior engineers.

Skills

Embedded C

Firmware development

Systems thinking

Mentoring

Communication

JTAG/SWD debugging

Version control

Education

Engineering degree (Electronic / Computer)

Tools

Altium Designer

DipTrace

Job description

You are a versatile, experienced development engineer who is equally comfortable writing embedded firmware, designing analogue and digital circuits, and thinking at a system level about how products work end-to-end. You don't pigeonhole yourself : you solve problems across firmware and hardware boundaries, contribute to multiple products, and bring a breadth of technical experience that specialists can't match. You'll work across the HEMS product range, contributing where the need is greatest : whether that's writing bare-metal firmware for a new feature, designing a circuit for a new product revision, validating a hardware-firmware interface, or helping the team think through a tricky cross-domain problem. This is a senior role with significant autonomy. You'll own your work from specification through to delivery, collaborate closely with firmware and hardware specialists, and play an active role in mentoring more junior engineers.

Key Responsibilities

• Firmware Development: Write, test, and maintain embedded C firmware for ARM Cortex-M and other real-time microcontrollers (TM4C, PIC24, RL78)
• Implement features, drivers, and control logic across multiple HEMS products
• Write unit tests and contribute to test frameworks; debug using JTAG/SWD, oscilloscopes, and logic analysers
• Write clean, well-structured firmware code adhering to MISRA-C guidelines
• Participate in peer code reviews; contribute to improving firmware quality across the team
• Hardware Design: Specify, design, document, and test analogue and digital circuit designs for embedded hardware
• Circuit analysis, modelling, and simulation using common industry tools
• DC-DC power supply design; power electronics awareness
• PCB schematic capture and layout (Altium Designer / DipTrace)
• Work with the compliance team to ensure relevant standards are met in new designs
• Component research and collaboration with the procurement team
• Contribute to patent identification and IP support where relevant
• System-Level Contribution: Act as a cross-domain resource: resolve issues that span hardware and firmware boundaries
• Collaborate with engineering and production teams for test and product lifetime support
• Identify technical and project risks across disciplines
• Contribute to peer design reviews across firmware and hardware
• Leadership & Collaboration: Provide mentoring and technical guidance for junior and mid-level engineers
• Work closely with firmware developers, hardware engineers, QA, and the compliance team
• Manage and organise own work through Jira; participate in team stand-ups and sprint ceremonies
• Document and present work; contribute to team demos and technical reviews
• Engage in Continuous Professional Development to stay current with standards, microprocessors, and coding best practice

Core Values

• Challenge the norm and set new standards
• Try new ideas and learn fast
• Focus on progress, not perfection
• Speak up, even when it's hard
• Empowered - Own the outcome
• Take responsibility for your work and results
• Make informed decisions
• Welcome challenge and give it respectfully
• Put customers first
• United - Work as one
• Collaborate and share openly
• Communicate clearly and honestly
• Support each other
• Think beyond your own team
• Purposeful - Do work that matters
• Consider the impact of your decisions
• Help customers save money and cut carbon
• Build technology that is made to last
• Deliver value through continuous improvement, The myenergi family is incredibly important to us and we are committed to Mental Health and Wellbeing in the workplace. Not only do we have an Employee Wellbeing Package and a number of trained Mental Health First Aiders across the business to ensure all employees maintain a positive frame of mind. We also provide free fruit and hold a free yoga session every Wednesday morning.
• Career Development: We support and encourage career development. We were recently ranked the 9^th fastest growing company and want you to grow with us.
• Positive Working Environment and Employee Empowerment: We pride ourselves on the culture we have created, our workforce is our extended family built on trust and respect.
• Birthday Leave: Because everyone deserves a day off on their birthday!, 25 days Annual Leave and bank holidays, plus a chance to sell or purchase extra days off with our holiday purchase scheme. We all need time to reenergise and recharge. An Employee Wellbeing Package and a number of trained Mental Health First Aiders across the business to ensure all employees maintain a positive frame of mind.

Qualifications and Experience

• Embedded C firmware: solid, production-quality experience writing bare-metal firmware for real-time microcontrollers
• Hardware design: proven track record of electronics lifecycle design; schematic capture and PCB layout experience
• Circuit design: experience designing circuits for embedded systems; DC-DC power supply design
• Embedded system understanding: comfortable at the firmware-hardware boundary; reads and works from complex schematics
• Debugging: proficient with JTAG/SWD, oscilloscopes, logic analysers, and lab equipment
• Version control: Git and Jira comfortable
• Communication: strong written and verbal communication; able to document and present technical work clearly
• Relevant engineering degree (Electronic Engineering, Computer Engineering, or similar) or equivalent demonstrable practical experience
• Self-directed and autonomous; comfortable managing own workload across multiple workstreams

Desirable Skills & Experience

• Experience with TI TM4C, Microchip PIC24, or Renesas RL78 platforms
• Familiarity with Altium Designer and/or DipTrace
• Power electronics experience - switching power supplies, AC rectification, inrush current management
• Understanding of PCB layout for RF and high-speed signal integrity
• Experience working with a compliance team on product certification
• Exposure to IoT communication hardware and protocols (awareness level, not ownership)
• Coding experience beyond C (Python useful for scripting/automation; C# or similar a bonus)
• Knowledge of energy systems: residential energy management, CT sensing, load control (directly relevant to our product range)
• AI-assisted development: use of AI tools (GitHub Copilot, ChatGPT, Claude) to accelerate design, documentation, and code review; we embrace this
• Innovation and curiosity: you spot a better way to solve a problem and you go after it

myenergi is a growing global clean-tech manufacturer dedicated to removing the barriers to a greener future. Known for our award-winning zappi EV charger and our intelligent home energy management ecosystem, we empower customers to control, store, and optimise their self-generated energy. With an expanding international presence and ambitious plans for continued global growth, we're shaping the future of smart, flexible homes, leading innovation in solar, EV, and battery technology to create a cleaner, more sustainable future for all., myenergi are at the front line of British renewable eco-smart technology innovation and manufacture. Our brand new innovations complex is at the heart of the of the Humber Freeport, the epicentre of green technology in the UK. Our world renowned Zappi product was the world's first solar and wind compatible electric car charger in the world, well and truly putting British manufacturing back on the global stage!