Assistant Site Manager

Octavius Infrastructure; Greater London; On-site; GBP 40,000 - 55,000; Full time

Benefits offered by this job

Company Car scheme

Private Healthcare

Enhanced Paternity & Maternity package

25 days Annual Leave + birthday off

Job summary

A leading infrastructure firm in the United Kingdom is seeking an Assistant Site Manager with OLE experience to support on-site construction management. The role involves ensuring safety and quality in delivery while fostering a collaborative team environment. Candidates should have experience in rail or infrastructure projects, holding relevant qualifications. The position offers a competitive rewards package, including health care, hybrid working, and support for personal development.

Qualifications

• Experience in rail or infrastructure, particularly OLE works.
• Experience contributing to projects around £3 million.
• Holding SSSTS or SMSTS qualification is a must.

Responsibilities

• Support management of on-site construction activities.
• Ensure work is executed safely and to quality standards.
• Promote a collaborative culture among the site team.

Skills

Leadership

Communication

Team Motivation

Safety Standards

Education

Degree, HND, NVQ in Civil Engineering or related

Tools

NEC

ICE

Job description

Octavius is proud to be a key delivery partner on Network Rail's North West & Central Framework, supporting the safe, efficient, and reliable operation of one of the busiest regions of the UK rail network. We are looking for an Assistant Site Manager, ideally with OLE experience to join our team.

Role

In this role, you will support the safe and successful delivery of on‑site construction activities, helping ensure our work is executed to the highest standards of safety, quality, and efficiency. You will:

• Support the leadership and management of site activities to ensure works are delivered safely, on programme, and to the expected quality standards in line with the Line of Sight.
• Develop and maintain strong working relationships with internal teams, suppliers, and customers, always representing Octavius positively and professionally.
• Promote and embody a collaborative culture across the site team—driving behaviours that put safety, teamwork, and delivery first.
• Support the protection and enhancement of Octavius' reputation by delivering work aligned to our values and customer expectations.

You'll receive… (because we value you)

We offer a competitive rewards package, including a Company Car scheme, Private Healthcare, Pension, Life Assurance cover, 25 days Annual Leave (and a day off for your birthday). You'll also have access to Hybrid working where possible, an enhanced Paternity & Maternity package and the opportunity to develop yourself personally and professionally.

About You… (what You Are Skilled At)

You will be someone who naturally leads by example and sets a high professional standard, demonstrating Octavius' Values: Integrity, Caring, Progressive, Openness, and Quality. You'll also be someone who:

• Communicates clearly, inspires confidence, and supports a positive team culture
• Builds trust and is respected by colleagues, subcontractors, and clients
• Motivates the team to deliver under pressure in a safe and controlled manner
• Takes personal accountability for site delivery and team performanceSets a strong benchmark for safety and quality on site
• Conducts regular Welfare and Development meetings and sets clear objectives
• Identifies individuals ready for development and supports their progression

You'll Bring… (your Wealth Of Experience & Qualifications)

To be successful, you will ideally have:

• Experience working in a rail or infrastructure environment, with exposure to OLE works
• Experience of contributing to projects up to c.£3 million
• SSSTS or SMSTS qualification
• PTS/COSS/ES and relevant industry training
• Good IT skills and an understanding of programming
• Working knowledge of NEC, ICE or similar forms of contract
• An industry‑recognised qualification such as a Degree, HND, NVQ, or equivalent in Civil Engineering, Construction, or related disciplines
• Or equivalent experience gained through extensive on‑site learning and development

Ready to shape the future of rail with us?

If you're looking to take the next step in your site management career within a supportive, forward‑thinking rail delivery team, we'd love to hear from you.

Inclusion and diversity are important to us, we are an equal opportunities employer and value difference. We want and will continue to build an inclusive environment where our people thrive. We firmly believe constantly striving to build a truly diverse workforce is what makes us a strong business and will enable us to continue to solve important problems and deliver unrivalled value to both our customers and clients. If you need any specialist support throughout your application, we will work with you where we can to support your journey with us.