Construction Manager

OnSite; City Of London; On-site; GBP 45,000 - 55,000; Full time

Benefits offered by this job

Family-friendly leave

Company pension

Health programme

Cycle to work

Career development

Diversity networks

Recognition scheme

Job summary

OnSite is a leading UK contractor delivering drainage, sewer rehabilitation, pipelines and rail projects. The Construction Manager will oversee Heathrow-based works, lead delivery across lining and rehabilitation, and ensure safety, quality and client satisfaction across multiple schemes.

With strong technical knowledge and commercial acumen, you’ll manage budgets, timelines and resources, acting as the main client contact and driving continuous improvement in project performance.

Qualifications

• Extensive experience delivering UV lining, rehabilitation, repair, and installation works in live, high-risk environments.

Responsibilities

• Lead and manage projects from scoping and pricing through delivery, commissioning and handover.
• Develop methodologies, delivery strategies, resource plans and programmes for efficient delivery.
• Prepare accurate cost estimates and pricing models ensuring profitability and client alignment.
• Oversee performance against programme, budget, quality, safety, and contractual targets.
• Act as primary client contact, maintaining strong relationships and providing technical support.
• Represent the business professionally in high-profile environments and support partnerships.
• Produce and implement RAMS ensuring regulatory and company compliance.
• Promote HSEQ culture and safe project execution.
• Manage UV lining assets, maintenance, PMI inspections and corrective actions.
• Coordinate repairs and operations to minimise disruption and maintain continuity.
• Provide leadership and mentoring to engineers and operatives.
• Drive continuous improvement and strategic input for growth.

Skills

UV lining

Project management

Commercial awareness

Safety & compliance

Leadership

Stakeholder management

Job description

Construction Manager

Salary: £45,000 - £55,000 (DOE)

Location: Heathrow

Contract: Full-Time Permanent 40 hours per week

About Us

OnSite is one of the UK's leading providers of professional contracting services. With a proven track record in the successful delivery of projects and contracts across a broad spectrum of market sectors, OnSite consists of specialist operating areas - drainage, sewer rehabilitation, pipelines, civil engineering, specialist maintenance and rail services.

The Role

The Construction Manager currently operates within the Heathrow office, providing management across lining, rehabilitation and associated drainage works, operations, and asset maintenance for their respective projects. The role combines strong technical knowledge with commercial awareness, client-facing capability, and a commitment to safety, quality, and continuous improvement.

Key Responsibilities

• Lead and manage projects from initial scoping and pricing through to delivery, commissioning, completion, and handover, ensuring successful outcomes across multiple schemes.
• Develop project methodologies, delivery strategies, resource plans, and programmes to ensure works are delivered efficiently and in line with client requirements.
• Prepare accurate cost estimates and pricing models, ensuring commercial viability, profitability, and alignment with client expectations.
• Oversee project performance to ensure delivery against programme, budget, quality, safety, and contractual targets.
• Act as the primary point of contact for clients, maintaining strong working relationships and providing operational, technical, and commercial support throughout project lifecycles.
• Represent the business professionally within high-profile operational environments, strengthening client confidence and supporting long-term partnership development.
• Produce, review, and implement Risk Assessments and Method Statements (RAMS), ensuring full compliance with industry regulations, contractual obligations, and company procedures.
• Promote a positive Health, Safety, Environmental and Quality (HSEQ) culture, ensuring all works are undertaken safely and in accordance with regulatory and industry standards.
• Manage UV lining and CCTV equipment assets, including maintenance, repairs, PMI inspections, and corrective actions to ensure operational readiness and compliance.
• Coordinate repair programmes and operational activities to minimise service disruption, maximise efficiency, and maintain business continuity.
• Provide leadership, mentoring, and technical guidance to engineers, supervisors, and operatives, supporting workforce development, training initiatives, and succession planning.
• Drive continuous improvement by enhancing processes, standards, operational performance, compliance, and overall service delivery while contributing strategic input to support business objectives and growth.

What You'll Need

• Extensive experience delivering UV lining, rehabilitation, repair, and installation works within live and high-risk operational environments.
• Proven project management experience, including planning, pricing, reporting, resource allocation, and the successful delivery of multiple concurrent schemes.
• Strong commercial awareness with the ability to balance operational delivery, client requirements, project profitability, and business objectives.
• Demonstrable ability to manage competing priorities while maintaining high standards of safety, quality, compliance, and performance.
• Excellent leadership and communication skills, with experience mentoring operational teams and building strong relationships with clients and stakeholders.
• Comprehensive understanding of construction, utility, rail, or infrastructure environments, with a focus on delivering safe, efficient, and high-quality project outcomes.

What You'll Get

• Family-Friendly Leave: Enhanced Maternity, Adoption, Paternity & Shared Parental Leave, Fertility Support, and up to 5 paid Carer's Days
• Financial & Life Assurance: Company Pension Scheme with salary sacrifice options
• Health & Wellbeing: Employee Assistance Programme and 24/7 Virtual GP access for you and your dependents
• Lifestyle & Perks: Cycle to Work Scheme and My Premier Benefits discounts, cashback, and vouchers
• Professional Development: Hands-on training and ongoing career development opportunities
• Inclusion & Belonging: Active People Networks - Disability & Neurodiversity, Unity+, Women's Network, Parent & Carer Networking Group and more
• Performance & Recognition: Annual salary review, Reward & Recognition Scheme, and Long Service Awards.

At South Staffordshire Group, inclusion matters. We have a wide range of employee networks which are employee-led communities that bring our people together, support different perspectives and create a strong sense of belonging. Our people are encouraged to get involved as members or allies.

We are committed to building a team that reflects the diversity of the communities we serve.

We warmly welcome applications from candidates of all backgrounds, including all genders, ethnicity, sexual orientations, and physical and neurodiverse abilities.

We are happy to discuss reasonable adjustments and encourage you to let us know how we can best support you throughout the recruitment process.