Design Engineer - Renewables

Unify Hq Limited

Cardiff, UK

5 days ago

Role details

Contract type

Permanent contract

Employment type

Full-time (> 32 hours)

Experience level

Experienced

Experience required

3 years minimum

Working hours

Regular working hours

Job source

www.apply4u.co.uk

Tech stack

Computer-Aided Design SAP (Applications)

Job 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

Requirements

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

About the company

UnifyHQ is proud to be working in partnership with our client, a leading energy efficiency provider delivering grant-funded retrofit solutions across South Wales. Their work spans solar PV, battery storage, air source heat pumps and insulation, with a strong focus on compliance, quality, and carbon reduction.