Technical Engineer

RES Limited; Corringham; On-site; GBP 40,000 - 65,000; Full time

Benefits offered by this job

Company Car

Annual leave

Pension scheme (matched)

Bonuses potential

Enhanced maternity/adoption leave

Healthcare access

YuLife app

Cycle to Work

Job summary

RES Limited in East England is seeking a field-based Technical Sales Engineer to deliver client-focused heat pump solutions. You will conduct site surveys, design systems, cost quotations, and manage handovers, while supporting installers on technical issues.

The role requires a consultative approach, strong knowledge of heat pump technology and MCS compliance, and willingness to travel in the East London/Ipswich area. A company car and competitive benefits are provided.

Qualifications

• Level 3 NVQ or equivalent in Plumbing & Heating.
• LCL/BPEC Heat Pump Design & Installation qualification.
• G3 Unvented Hot Water, WRAS and MCS standards knowledge.
• Proven experience in low-temperature hydraulic design and electrical fault‑finding.
• Consultative mindset translating technical data for non‑technical customers.
• Based in/around East London or Ipswich with travel willingness and overnight stays.

Responsibilities

• Conduct technical site surveys, agree system specs with installers/homeowners, produce on-site quotations, commission ASHP systems, complete handovers and resolve issues via remedial visits.
• Produce room-by-room heat loss calculations, system designs and performance assessments using company tools, and compile proposals and quotations for the sales team; maintain CRM records.
• Act as Nominated Technical Supervisor for regional MCS projects to ensure installations meet MCS standards and Building Regulations.
• Provide phone-based and remote technical support, maintain relationships with installers, and be a consistent technical contact.

Skills

Technical expertise

Consultative selling

Troubleshooting electrical faults

Travel readiness

Education

Level 3 NVQ Plumbing & Heating

LCL/BPEC Heat Pump Design & Installation

G3 Unvented Hot Water

WRAS compliance

MCS standards knowledge

Tools

CRM systems

MCS design tools

Job description

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

Responsibilities

• 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.

Qualifications

• 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.

Salary and Benefits

Competitive Salary + Company Car + Excellent Benefits

Benefits

• Annual leave (increasing with length of service)


• 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


• free access to healthcare


• our popular YuLife app


• our Cycle to Work scheme and more!

Employment Details

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

About the Company

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.