Technical Engineer

RES Limited; Ilford; Hybrid; GBP 40,000 - 55,000; Full time

Benefits offered by this job

Company car

Health benefits

Pension

Bonuses

Discounts

Cycle to Work

Healthcare access

YuLife app

Job summary

RES Limited in East England is seeking a field-based Technical Sales Engineer to drive technical sales of heat pump systems. You will conduct site surveys, design compliant systems, and produce quotations for installers and homeowners while maintaining CRM records.

You will also oversee MCS-compliant installations as the Nominated Technical Supervisor and provide remote technical support, building strong relationships with installers across the region and ensuring project handovers are smooth.

Qualifications

• Site surveys and quotations for installations with installers and homeowners.
• Produce heat loss calculations and system designs using company tools.
• Ensure subcontracted installs comply with MCS and Building Regulations.
• Provide remote technical support and maintain installer relationships.

Responsibilities

• Conduct technical site surveys and agree specifications.
• Produce room-by-room heat loss calculations and quotations.
• Act as Nominated Technical Supervisor for MCS projects.
• Provide phone-based and remote technical support.

Skills

Consultative mindset

Low-temperature hydraulic design

Electrical fault-finding

Travel willingness

Customer-facing communication

Education

Level 3 NVQ or equivalent

LCL/BPEC Heat Pump Design & Installation

G3 Unvented Hot Water, WRAS, MCS standards

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.