Mechanical Engineer (HVAC) in Sizewell

Energy Jobline ZR; Sizewell; On-site; GBP 60,000 - 80,000; Full time

Job summary

A leading energy services provider in Sizewell seeks a qualified Mechanical Engineer (HVAC) for a full-time, hands-on role. The ideal candidate will have NVQ Level 3 and experience in maintaining mechanical systems in industrial settings. Responsibilities include preventative maintenance, fault diagnosis, and ensuring high safety standards. Competitive salary and various benefits are offered.

Benefits

24 days annual leave + bank holidays

Overtime opportunities

Excellent pension contributions

Flexible benefits including retail discounts

Mental health and wellbeing support

Ongoing training and career progression opportunities

Qualifications

• Experience working in a mechanical industrial setting, preferably HVAC.
• Strong background in mechanical engineering.
• Comfortable working with mechanical and basic electrical systems.

Responsibilities

• Carry out planned preventative maintenance on HVAC and mechanical systems.
• Diagnose and resolve faults from help desk requests.
• Maintain and repair mechanical plant including pumps and compressors.
• Ensure compliance with health, safety, and quality assurance standards.

Skills

Mechanical engineering

HVAC systems

Attention to detail

Health & safety regulations

Education

NVQ Level 3 qualification

Tools

Microsoft Office

Digital maintenance systems

Job description

Job Description

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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 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
• Mental health and wellbeing support
• Access to our Employee Assistance Programme (EAP)
• Referral and recognition bonuses
• Ongoing training and career progression opportunities

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.

If you are interested in applying for this job please press the Apply Button and follow the application process. Energy Jobline wishes you the very best of luck in your next career move.