Construction Supervisor (NEC4)

Assystem GmbH; Helensburgh; On-site; GBP 60,000 - 80,000; Full time

Benefits offered by this job

Enhanced sick pay

Cycle to work scheme

Discount vouchers for leisure activities

Job summary

Assystem GmbH is seeking an experienced Construction Supervisor in Helensburgh, UK, to oversee major infrastructure projects in the nuclear sector. As the NEC4 Supervisor, you will ensure compliance with contract requirements while maintaining safety and quality standards on site.

The ideal candidate will have extensive experience, excellent communication skills, and a strong understanding of regulatory environments. Join us to contribute to significant projects and develop your career in a dynamic work setting.

Qualifications

• 15+ years' experience in major civil engineering or infrastructure projects.
• Excellent communication and stakeholder management skills.
• Solid understanding of CDM Regulations and Health & Safety legislation.

Responsibilities

• Act as NEC4 Supervisor ensuring compliance with contract requirements.
• Supervise construction activities, monitoring quality, safety, and progress.
• Review contractor documentation, including Inspection & Test Plans.

Skills

NEC4 contracts knowledge

Construction quality assurance

Health & Safety compliance

Stakeholder management

Organizational skills

Regulated environment experience

Education

HNC/HND in Civil Engineering or related discipline

Tools

Construction management software

Job description

# Construction Supervisor (NEC4)* Defence* Contracting / Support Functions* Helensburgh* United Kingdom* 06/07/26* On site* ShareI apply##Today, Assystem is among the top three independent nuclear engineering firms worldwide. With over 60 years of experience in highly regulated sectors, the group supports public and industrial stakeholders in the execution of complex and strategic infrastructure projects, subject to high safety and security requirements. Assystem mobilizes 8,000 experts in 13 countries and intervenes across the entire project lifecycle, in engineering, project management and digital solutions.## Job Description**Construction Supervisor (NEC4)****About the Role**We’re looking for an experienced **Construction Supervisor** to join our growing team, supporting the delivery of major infrastructure projects within the UK nuclear sector. Reporting to the Construction Manager, you’ll oversee site activities, ensuring contractors deliver work safely, efficiently, and to the highest quality standards.Working as part of the Client team, you’ll primarily fulfil the **NEC4 Supervisor** role while supporting wider HSQE activities on site. This is an excellent opportunity to work on nationally significant projects within a highly regulated environment. What You’ll Do* Act as the **NEC4 Supervisor**, ensuring works comply with contract requirements and project scope.* Supervise construction activities, monitoring quality, safety, and progress on site.* Carry out inspections, witness testing, identify defects, and support quality assurance.* Review contractor documentation, including Inspection & Test Plans (ITPs), Quality Plans, and construction methods.* Work closely with Project Managers, contractors, and stakeholders to support successful project delivery.* Maintain accurate site records, reports, and project documentation.* Monitor contractor Health & Safety performance and support HSQE activities.* Contribute to commissioning, lessons learned, and continuous improvement across projects. Why Join Us?Be part of a collaborative team delivering some of the UK’s most important infrastructure projects. You’ll work alongside industry experts, gain exposure to high-profile programmes, and help shape the future of the UK’s nuclear sector while developing your career in a challenging and rewarding environment.## My profile What We’re Looking ForEssential* Experience supervising construction works on large civil engineering or infrastructure projects.* Good understanding of **NEC4 contracts** and the Supervisor role.* Strong knowledge of construction quality, health & safety, and site inspections.* Excellent communication and stakeholder management skills.* Ability to work effectively within regulated environments and manage multiple priorities.* Strong organisational skills with attention to detail.* Solid understanding of **CDM Regulations** and Health & Safety legislation.* Minimum **15 years’ experience** delivering major civil engineering or infrastructure projects.* Experience in heavy civil construction, including groundworks, utilities, temporary works, reinforced concrete, and structural steel.* Experience working within **highly regulated environments** with robust safety and quality management systems.* Excellent attention to detail, strong organisational skills, and a collaborative approach to problem-solving.* Able to work proactively and confidently in complex project environments.Desirable* Experience within the **Nuclear, Defence, Oil & Gas**, or other highly regulated industries.* Knowledge of Factory Acceptance Testing (FAT), Site Acceptance Testing (SAT), and commissioning activities.* Experience with regulated control of work systems (e.g. **NSAG** or similar).* Relevant construction or engineering qualifications.* **NEC4 Supervisor Accreditation** (or willingness to achieve within six months).* Previous experience in the **Nuclear** sector.* Experience delivering building, prefabrication, or **MEICA** (Mechanical, Electrical, Instrumentation & Control) works.* HNC/HND (or higher) in Civil Engineering or a related discipline.* **SMSTS**, **CITB CSCS Black Card**, **IOSH Managing Safely**, and First Aid certification.* Experience within the **Nuclear, Defence, Oil & Gas**, or other highly regulated industries.* Knowledge of Factory Acceptance Testing (FAT), Site Acceptance Testing (SAT), and commissioning activities.* Experience with regulated control of work systems (e.g. **NSAG** or similar).* Relevant construction or engineering qualifications.**Why Join the Switchers Community?**A dynamic career management policy to enable our employees to progress through our five business lines: operations, project, technical, sales and support functionsProvide opportunities to work on exciting, global projectsAccess to an employee assistance programme with free mindfulness, health, wellbeing resources and a confidential support line available 24/7 via phone or textDiscount vouchers for days out and restaurants, eye test and glasses vouchers, cycle to work scheme, free flu jabsEnhanced sick pay**NOTICE TO CANDIDATES ON RECRUITMENT FRAUD – We are committed to safeguarding candidates from fraudulent activity associated with our recruitment process. Please note that we will never offer specialist CV writing services, request payment or ask for sensitive personal information during the recruitment process.**Umbrella contractorRequires sole UK national with SC clearance**NOTICE TO CANDIDATES ON RECRUITMENT FRAUD – We are committed to safeguarding candidates from fraudulent activity associated with our recruitment process. Please note that we will never offer specialist CV writing services, request payment or ask for sensitive personal information during the recruitment process.**We are committed to equal treatment of candidates and promote, as well as foster all forms of diversity within our company. We believe that bringing together people with different backgrounds and perspectives is essential for creating innovative and impactful solutions. Skills, talent, and our people’s ability to dare are the only things that matter !. Bring your unique contributions and help us shape the future.