Technical Engineer

RES Limited; Coat; On-site; GBP 42,000 - 65,000; Full time

Benefits offered by this job

Company Car

Excellent Benefits

Job summary

RES Limited is hiring a Field Based Technical Sales Engineer covering East England. You will conduct technical site surveys, design heat pump systems, prepare quotations and handovers, and resolve issues on remedial visits.

The role requires knowledge of MCS standards, G3 unvented hot water, WRAS, and low-temperature hydraulic design, with travel to install sites and occasional overnight stays. A company car and comprehensive benefits package are included.

Qualifications

• Survey installations and design room-by-room heat loss calculations.
• Produce proposals and quotations; maintain CRM records.
• Coordinate MCS-compliant sub-contractor installations.
• Provide phone-based and remote technical support.

Responsibilities

• Conduct technical site surveys and agree system specs.
• Produce on-site quotations and commission Air Source Heat Pumps.
• Handover completed systems and resolve issues during remedial visits.
• Maintain strong relationships with installers.

Skills

Low-temperature hydraulic design

Electrical fault finding

Consultative selling

Customer liaison

Willingness to travel

Education

Level 3 NVQ or equivalent

LCL/BPEC Heat Pump Design & Installation

G3 Unvented Hot Water

WRAS

MCS standards

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.