Technical Engineer

RES Limited; Ilminster; On-site; GBP 42,000 - 62,000; Full time

Benefits offered by this job

Company Car

Excellent Benefits

Annual leave and pension scheme

Job summary

RES Limited is seeking a Field Based Technical Sales Engineer in the East England region. You will conduct site surveys, agree system specs with installers/homeowners, and produce quotations for on-site heat pump projects.

The role involves commissioning, handovers and resolving issues with remote support. You will design room-by-room heat loss calculations, develop proposals, and ensure projects comply with MCS standards while travelling across the region to install and support systems.

Qualifications

• Site surveys and system specifications with installers/homeowners.
• Room-by-room heat loss calculations using company tools.
• Coordinating with sales and ensuring MCS compliance for projects.
• Providing phone and remote technical support to installers.

Responsibilities

• Conduct technical site surveys, agree specs, produce quotations and commission heat pump systems.
• Produce technical proposals for the sales team and maintain CRM records.
• Act as Nominated Technical Supervisor for regional MCS projects.
• Support installers via phone/remote contacts and travel as needed.

Skills

Travel willingness

Consultative selling

Technical troubleshooting

Customer relationship

Electrical fault-finding

Education

NVQ L3 Plumbing & Heating or equivalent

LCL/BPEC Heat Pump Design & Installation

Tools

MCS compliance knowledge

CRM systems

On-site design tools

Job description

As a Field Based Technical Sales Engineer you'll be responsible for:

• Conducting technical site surveys, agreeing system specifications with installers and homeowners, producing on-site quotations, commissioning Air Source Heat Pump systems, completing system handovers, and resolving technical issues through remedial visits.
• Produce room-by-room heat loss calculations, system designs and performance assessments using company design tools and established processes, with full training and technical support provided. Compile technical proposals and quotations for the sales team, ensuring accurate project records are maintained within the CRM system.
• Acting as the Nominated Technical Supervisor for all regional MCS projects, ensuring every subcontracted installation adheres to MCS standards and Building Regulations.
• Providing phone-based and remote technical support, maintaining strong working relationships with assigned installers, and acting as a consistent technical point of contact.
• Plumbing & Heating: Level 3 NVQ or equivalent.
• Heat Pumps: LCL/BPEC Heat Pump Design & Installation.
• Compliance: G3 Unvented Hot Water, WRAS, and a comprehensive knowledge of MCS standards.
• Technical Expertise: Proven experience in low-temperature hydraulic design and electrical fault-finding.
• Soft Skills: A "consultative" mindset with the ability to translate technical data into actionable insights for non-technical customers.
• Logistics: Based in/around East London or Ipswich, with a willingness to travel and occasional overnight stays.
• Competitive Salary + Company Car + Excellent Benefits

Technical Sales Engineer - Field Based - RES - Renewables - East England

So, who are we? We are RES, a part of the Wolseley Group - a leading specialist trade merchant across the UK and Ireland. We pride ourselves in putting our people and customers at the heart of everything we do - and best of all, provide opportunities to develop skills and build careers through our award-winning Wolseley Talent Guild. Also, did we mention? In addition to the competitive salary, there are also benefits on tap - including... Annual leave (increasing with length of service), a generous pension scheme (matched up to 9%), potential to earn bonuses, enhanced maternity/adoption leave and access to a great range of online and high street discounts. We also promote positive health and wellbeing by offering free access to healthcare, our popular YuLife app, our Cycle to Work scheme and more!

This is a full‑time, permanent, field based role working 42.5 hours per week Monday to Friday between 8am - 5pm.