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# Design Engineer - Renewables

- **Company:** Unify Hq Limited
- **Location:** Cardiff, UK
- **Experience:** Experienced
- **Contract:** Permanent contract
- **Skills:** Computer-Aided Design, SAP (Applications)
- **Published:** August 7, 2026
- **Apply:** https://www.apply4u.co.uk/jobs/x/43006782/

## About the Role

* Minimum 3 years' experience in renewable energy system design
 * Working knowledge of MCS, PAS#####5, and Building Regulations Part L
 * Proficiency in relevant design software
 * Strong understanding of electrical design principles and grid connection requirements (G98/G99)
 * Excellent communication skills and attention to technical detail
 * Ability to manage multiple projects and meet deadlines
 * Experience within retrofit or social housing decarbonisation programmes
 * Understanding of SAP, EPCs, and energy modelling methodologies

## Description

We are seeking a technically minded Renewables Design Specialist to lead the design, specification, and optimisation of low-carbon energy systems. This role supports domestic and commercial installations, ensuring all designs meet MCS standards, Building Regulations, and industry best practice., * Produce detailed technical designs, schematics, and layout drawings for solar PV, battery storage, ASHP, and ventilation systems (PIV, dMEV)

 * Carry out load, yield, and performance calculations using specialist design software
 * Specify components and materials to ensure efficiency, quality, and cost-effectiveness
 * Prepare technical documentation for installation teams, subcontractors, and customers
 * Ensure compliance with MCS standards, BS 7671 wiring regulations, and manufacturer requirements
 * Conduct feasibility assessments and energy modelling based on site surveys, EPC data, and client needs
 * Ensure all designs and documentation meet PAS 2030/#####, TrustMark, MCS, and planning standards
 * Review and sign off commissioning documentation and as-built drawings
 * Collaborate with Project Managers, Retrofit Coordinators, and Installers to maintain design intent
 * Provide technical support and problem-solving during installation and commissioning


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