Mechanical Engineer (HVAC)

CompanyDalkia UK

LocationSizewell, England, United Kingdom

Posted At2/5/2026

UK Visa Sponsorship Analytics

Occupation Type

Metal working production and maintenance fitters

Occupation Code Skill LevelMedium Skilled

Sponsorship Salary Threshold

£41,700 (£21.38 per hour)

Standard minimum applies

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Description

Mechanical Engineer (HVAC)

Location: Sizewell B, Leiston, Suffolk

Contract: Permanent, Full-Time (37.5 hours/week)

Salary: Competitive, based on experience

About the Role

Dalkia UK is looking for a qualified and experienced Mechanical Engineer (HVAC) to join our dedicated team at Sizewell B, working under our long-term partnership with EDF. This is a hands-on, technically challenging role in a highly regulated, heavy industrial environment—perfect for an engineer who thrives on responsibility and wants to contribute to one of the UK’s key energy generation sites.

Key Responsibilities

Carry out planned preventative maintenance (PPM) on a wide range of HVAC and mechanical systems, including heavy plant equipment.
Diagnose and resolve faults arising from help desk requests and operational reports.
Support with maintenance of HVAC systems across the site, including office and welfare facilities.
Maintain and repair mechanical plant including pumps, air compressors, fans, motors, drives, pneumatic controls, and pressurisation systems.

Ensure all work is delivered to high standards of health, safety, and quality assurance, in line with nuclear site requirements.

Participate in ongoing training and development to maintain industry certifications and site competency.

About You

You’ll be a hands-on engineer with a strong background in mechanical engineering, ideally gained in an industrial, utilities, energy, or nuclear environment. You take pride in your technical ability, attention to detail, and commitment to safety.

Essential Skills & Qualifications

Time-served Mechanical Engineer with a relevant NVQ Level 3 qualification
Proven experience working on mechanical systems in an industrial setting, preferably HVAC
Comfortable working with both mechanical and basic electrical systems
Strong understanding of health & safety regulations and industry standards
Competent with Microsoft Office and digital maintenance systems

What We Offer

24 days annual leave + bank holidays
Overtime opportunities
Excellent pension contributions

Flexible benefits including:

▪️ Retail discounts

▪️ Electric car scheme (Subject to acceptance)

▪️ Mental health and wellbeing support

Access to our Employee Assistance Programme (EAP)
Referral and recognition bonuses
Ongoing training and career progression opportunities

Diversity & Inclusion

At Dalkia, we are proud to promote a diverse and inclusive working environment. We welcome applications from all backgrounds and will make reasonable adjustments throughout the recruitment process to support you.