Technical Engineer

RES Limited; Canterbury; On-site; GBP 45,000 - 65,000; Full time

Benefits offered by this job

Company car

Annual leave (increasing with service)

Pension scheme (matched)

Bonuses potential

Healthcare access

YuLife app

Cycle to Work

Job summary

RES Limited is seeking a Technical Sales Engineer for a field-based role in East England. You will work with installers and homeowners to specify systems, produce on-site quotations, and commission Air Source Heat Pumps, with full training and support provided.

You will design room-by-room heat loss calculations, develop system designs and performance assessments, and compile proposals for the sales team, keeping accurate CRM records and ensuring project compliance across MCS standards.

Qualifications

• Must have Level 3 NVQ Plumbing & Heating or equivalent.
• Heat pump design & installation qualification (LCL/BPEC) is required.
• Knowledge of MCS standards, G3 unvented hot water and WRAS beneficial.
• Proven experience with low-temperature hydraulic design and fault-finding.
• Ability to translate technical data for non-technical customers.

Responsibilities

• Conduct technical site surveys and agree system specifications with installers/homeowners.
• Produce on-site quotations and commission air source heat pump systems; oversee handovers and remedial visits.
• Produce heat-loss calculations, system designs and performance assessments using company tools; prepare proposals and quotations; maintain CRM records.
• Act as Nominated Technical Supervisor for regional MCS projects to ensure compliance with standards and Building Regulations.
• Provide phone-based and remote technical support; maintain strong relationships with installers and act as a technical point of contact.

Skills

Low-temperature hydraulic design

Electrical fault-finding

Consultative selling

Technical problem solving

Communication with non-technical users

Education

Plumbing & Heating Level 3 NVQ

Heat Pump Design & Installation (LCL/BPEC)

MCS Standards & Building Regulations knowledge

Tools

CRM software

Company 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.