Principle Engineer

Job Title: Principal Engineer
Salary: £52,000 to £75,000 (dependent on experience)
Location: Hybrid – Swindon, Slough, Crossness, or Maple Lodge
Type: Permanent, hybrid (up to 3 days on-site/office)

About the Role:

Our client is seeking a highly skilled Principal Engineer to lead design and assurance activities across a transformative £300 million capital infrastructure programme. This is a unique chance to take ownership of major water treatment projects, managing technical delivery from feasibility through to commissioning.

About the Client:

Our client is the UK’s largest water and wastewater utility provider, serving over 16 million people. They are on a bold mission to modernise water treatment infrastructure and create a more sustainable and resilient network.

Key Responsibilities:

• Plan and manage design activities from concept through to contract award
• Oversee technical assurance, detailed designs, and design change reviews
• Provide technical guidance to project and commissioning teams
• Act as the contact for CDM regulations, including Designer or Principal Designer roles
• Conduct health & safety site inspections and support continuous improvement
• Apply rigorous risk management and de-risking strategies
• Build effective internal and external stakeholder relationships
• Influence project delivery with commercial insight and engineering leadership

What Our Client is Looking For:

• Degree in Civil or Mechanical Engineering (or similar discipline)
• Chartered engineer status (or actively working toward it)
• Proven experience delivering complex capital engineering projects (up to £100M+)
• Strong decision-making, communication, and stakeholder management skills
• Demonstrated leadership in people and team management
• Valid UK driving licence and access to transport

What Our Client Offers:

• Competitive salary of £52,000 to £75,000 per annum
• £5,800 annual car allowance
• 26 days’ holiday (increasing to 30 with service) + bank holidays
• Annual bonus scheme
• Private medical healthcare
• Generous pension (up to 12% employer contribution)
• Annual personal medical assessments
• Extensive wellbeing and discount benefits via a dedicated hub

Eligibility:

You must have the right to work in the UK. This role requires regular site attendance (up to 3 days per week) across key locations and therefore a full driving licence is essential.

Opportunity for Growth:

This role offers real leadership and influence on a nationally significant infrastructure programme. You’ll be supported with continued professional development and clear progression routes within a major utility provider committed to long-term transformation.

We are an equal opportunity employer and value diversity in our company. We do not discriminate on the basis of race, religion, colour, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.