Connected Energy is leading the way in the development of battery energy storage solutions. We are one of only a handful of energy storage companies worldwide that have developed the technology to use second-life electric vehicle batteries as an energy storage system. Our product is changing the way businesses manage their energy and we have systems in operation on commercial sites across the UK and Europe. Role Overview We are seeking a highly skilled Senior Electrical Engineer with expertise in the design and development of Battery Energy Storage Systems (BESS) at 1MW power levels. The ideal candidate will be responsible for delivering innovative, efficient, and cost-effective electrical designs for BESS projects, ensuring compliance with industry standards and regulatory requirements. The candidate will also be proficient in generating clear, comprehensive documentation for the outsourcing of projects and managing the necessary approvals and standards throughout the design and development lifecycle. Main Activities Lead the design and development of multiple Electrical Systems for Battery Energy Storage Solutions (BESS) at 1MW power levels, ensuring optimal performance, reliability, and scalability. Design electrical schematic, single line diagram, field wiring diagram in Auto-CAD Electrical and generate BOM in Vault following applicable standards such as UL508A and IEC61439-1/2 standards. Design cable schedules for AC and DC circuits including Single-line interpretation, ampacity calculation, and cable/termination selection. Design and configure panels for BESS to include component selection such as breakers, fuses and relays for DC and AC circuits, functional safety analysis, auxiliary load estimation, and thermal management control. Evaluate product and system design and configurations for compliance to relevant industry standards such as BS 7671, IEC 61439, IEC 60617, IEC 61508, ISO 13849 with understanding of UL9540A, UL1741 and UL1973. Ensure cohesion between Electrical team and SW team, particularly with I/O circuits for the Main PLC Controller Safety Controller. Perform effective and decisive requirements management, ensuring stakeholders are aware and informed. Evaluate product and system design and configuration for compliance to relevant industry standards. Create testing specification, plan, and interconnection requirements Develop product documentation such as manuals, TCF, work instructions Collaborate in a team environment, working closely with cross-functional teams including mechanical engineers, software engineers, and project managers to ensure the complete development of the systems and associated supporting packages SAP, Autodesk Vault and Autodesk Inventor Perform electrical simulations for DC and AC circuits, modelling, and analysis such as load flow, fault analysis, transient analysis Generate detailed documentation for the outsourcing of various system components, ensuring that specifications and quality standards are clearly communicated to external vendors. Collaborate with external suppliers and contractors to ensure timely and cost-effective delivery of equipment and services. Ensure designs meet local, national, and international electrical standards, codes, and regulations. Manage the approvals process for electrical designs, obtaining necessary certifications and regulatory approvals for the BESS systems. Oversee the electrical testing, validation of the BESS installations to ensure compliance with design specifications and operational safety. Troubleshoot electrical system issues during the commissioning phase, ensuring a smooth transition to operation. Mentor junior engineers, providing guidance on technical challenges, project management, and professional development. Support control of electrical database and component catalogue within Autodesk Vault To ensure HS process and procedures are followed, especially when isolating and re-energising systems. Essential criteria: Bachelor’s or Master’s degree in Electrical Engineering, Power Systems, or related field. 5 years experience with AutoCAD Electrical or similar software. Strong background in power systems design, including experience with power electronics, inverters, DC/AC conversion, and battery storage technologies. Ideally 5 years of electrical engineering experience focusing on designing and testing power systems and control panels preferably in BESS Ability to design electrical circuits to 1000 VAC / 1500 VDC ensuring compliance to relevant standards safety. Able to review project specification and interconnection requirements Understanding of embedded software development including industrial control communication protocols Personal specification: Strong project management skills with the ability to handle multiple projects and deadlines. Excellent written and verbal communication skills for clear reporting and effective collaboration with teams and external partners. Leadership and mentoring capabilities for guiding junior engineers Excellent communication skills. What We Value Whilst we’ve been around for 15 years, we have maintained our start-up working culture. As a small company, we can be agile and flexible, and our people are too. Here are some of the qualities that we look for in our people, defined by our values: Innovators: you’ll be able to think outside the box, always looking to find the best solution. Ambitious: we think big and look for people who are happy to think independently, ready to use your own initiative to help us to become a global leader in our field Sustainability-minded: you’ll have a passion for making the world a better place with an interest in green technology. Trusted: you’ll be a real team player with a willingness to chip in to get the job done. Adaptable: comfortable with change in a fast-paced environment. Equal Opportunities As an equal opportunities employer, we do not discriminate based on any protected attribute. Our commitment is to provide equal opportunities in an inclusive work environment. Connected Energy is conscious that some groups of people are statistically less likely to apply for a role if they feel they do not fully meet the requirements. If you like what we do, align with our values, and think that you can do the job well, regardless of whether you meet 100% of the job requirements, the Connected Energy team would encourage you to apply. Employee Benefits As well as the opportunity to be part of a growing, global, clean technology business, our additional benefits include: A company-matched pension, share options health care cash plan, income protection, an EV car scheme a bike to work scheme VISA Sponsorship Candidates should make clear their right to work and VISA status upon application to our hiring team.