Technical Engineer

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

Benefits offered by this job

Annual leave

Pension (matched up to 9%)

Bonuses

Maternity / Adoption leave

Healthcare

Job summary

RES Limited is seeking a Technical Sales Engineer for a field-based role covering East England. You will conduct technical site surveys, agree specifications with installers and homeowners, and produce quotations while commissioning Air Source Heat Pump systems.

You will ensure projects conform to MCS standards and Building Regulations and support installers with remote technical assistance. Based around East London/ Ipswich area with travel, you will translate technical data for non-technical

Qualifications

• Conduct on-site surveys and translate technical data for non-technical customers.
• Produce room-by-room heat loss calculations and system designs using company tools.
• Ensure projects meet MCS standards and Building Regulations.
• Provide remote technical support and maintain relationships with installers.

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.

Skills

Technical sales

Site surveys

Heat pump design & installation

MCS compliance knowledge

Low-temp hydraulic design

Electrical fault-finding

Consultative communication

Travel readiness

Education

NVQ Level 3 Plumbing & Heating

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.