Solar PV & Battery Technical Lead (Residential Design & QA) Salary: Up to £55,000 bonus Location: Colchester or London (hybrid) occasional site visits Benefits: Company vehicle, 28 days holiday (incl. bank holidays) SERT is recruiting on behalf of a fast-growing renewable energy installation business for a Solar PV & Battery Technical Lead to support the delivery of high-quality, compliant residential systems across the UK. This role is suited to an experienced solar engineer or electrician looking to step off the tools and move into a technical leadership and design authority position. The role You will take ownership of the technical design, specification, and quality assurance of residential solar PV and battery storage systems. Acting as a senior technical point of contact, you will ensure all designs and installations meet MCS standards, BS 7671, G99/G100, DNO requirements, and manufacturer specifications. Key responsibilities Lead end-to-end technical design of residential solar PV and battery systems Produce compliant PV layouts, inverter/battery specifications, cable schedules, and single-line diagrams Conduct desktop technical assessments using surveys, photos, roof plans, and design tools Validate roof layouts, shading analysis, and system performance estimates Ensure full compliance with MCS, G99/G100, and DNO requirements Provide technical guidance to installers, project managers, and customers Support installer vetting, training, and QA processes Troubleshoot technical issues and refine designs based on installer feedback Improve internal technical processes, templates, and design standards Keep up to date with evolving solar and battery technologies and regulations Essential experience Proven experience designing and specifying solar PV and battery storage systems Strong understanding of electrical installation practices and BS 7671 Experience working to MCS standards Confident interpreting surveys, photos, and roof plans Strong attention to detail with a methodical approach Clear communicator, comfortable advising installers and stakeholders UK driving licence (for occasional site visits) Desirable 18th Edition Wiring Regulations Experience with PV design software (PVSol, Helioscope, OpenSolar) Battery commissioning or manufacturer training (e.g. GivEnergy, Tesla, SolarEdge) MCS Solar PV qualification or equivalent Experience leading teams or managing technical workflows Package Up to £55,000 basic bonus Company vehicle 28 days holiday (including bank holidays) Opportunity to shape technical standards within a scaling renewable business Apply via SERT for a confidential discussion.