Principal Electrical Design Engineer

We are looking to strengthen our engineering team with a Principal EICA Engineer based in the Thames Region hybrid working available with an expectation to attend sites on a regular basis.

Power the Future of Water Infrastructure

At MWH Treatment, we're looking for a talented Principal Electrical Design Engineer to provide technical leadership across some of the UK's most important water and wastewater infrastructure projects.

This is an exciting opportunity for an experienced electrical engineering professional to lead the design and delivery of complex projects, influence technical strategy, support major bids, and mentor the next generation of engineers. You'll play a key role in delivering safe, innovative and cost-effective electrical solutions that support critical infrastructure and environmental sustainability.

As a recognised technical expert, you will take ownership of electrical engineering design activities, ensuring projects are delivered to the highest standards of quality, safety and compliance.

The Role

As a Principal Electrical Design Engineer, you will provide authoritative technical leadership across a portfolio of projects, guiding multidisciplinary teams to deliver robust electrical engineering solutions.

Working closely with Discipline Leads, Chief Engineers, Project Managers, construction teams, clients and suppliers, you will transform complex project requirements into practical, compliant and commercially sound designs while driving engineering excellence throughout the project lifecycle.

Key Responsibilities

• Lead and coordinate the delivery of complex electrical engineering designs within the water and wastewater sector.
• Provide technical leadership and guidance across multidisciplinary project teams.
• Develop innovative, practical and risk-balanced engineering solutions.
• Ensure all electrical designs are safe, sustainable, compliant, buildable and cost-effective.

Produce, review and approve electrical calculations, specifications, reports, drawings and design documentation.

Support major project bids and contribute to successful project delivery strategies.

Act as a technical reviewer and maintain high standards of engineering governance and quality assurance.

Manage technical delivery from high-level project briefs, balancing programme, cost, quality and resource requirements.

Identify, assess and manage technical risks, ensuring issues are addressed proactively.

Work closely with clients, contractors, suppliers and internal stakeholders to achieve project objectives.

Support and mentor engineers and designers, helping to develop technical capability across the business.

Promote a culture of continuous improvement, safety, customer focus and engineering excellence.

You'll be an experienced Electrical Design Engineer with a strong technical background and a proven ability to lead complex projects within the water, utilities or infrastructure sectors.

Essential

• Degree qualified in Electrical Engineering (BEng, MEng or equivalent).
• Significant experience delivering electrical engineering design solutions within the UK water and wastewater industry.
• Strong understanding of electrical systems associated with water and sewage treatment facilities.
• Experience leading multidisciplinary engineering design projects.
• Knowledge of LV and HV power distribution, motor control centres, standby generation, power systems and industrial installations.
• Ability to develop practical, efficient and economical engineering solutions.
• Good understanding of related engineering disciplines including mechanical, civil, process engineering and project management.
• Strong appreciation of automation, control and instrumentation systems (EICA).

Excellent technical judgement, problem-solving and decision-making skills.

Ability to present technical proposals clearly, confidently and convincingly to clients and stakeholders.

Strong coordination and leadership skills with a commitment to quality, safety and project delivery.

Desirable

• Chartered Engineer (CEng) status.
• Experience as a technical reviewer, approver or signatory.
• Strong knowledge of relevant electrical standards and regulations, including BS 7671.
• Previous experience managing or mentoring engineering teams.
• Established professional network within the UK water sector.
• Experience of electrical design for treatment works, pumping stations and related infrastructure.

Why Join MWH Treatment?

• Work on major water and wastewater projects that genuinely impact communities across the UK.
• Take a leading role in shaping technical solutions for nationally significant infrastructure.
• Collaborate with highly experienced multidisciplinary teams.
• Enjoy excellent opportunities for career progression and professional development.
• Join a business committed to innovation, sustainability, quality and safety.

Join Us

If you're an experienced Electrical Design Engineer seeking a senior technical leadership position where you can influence project success, develop engineering talent and drive technical excellence, we'd love to hear from you.

Join MWH Treatment and help deliver the critical infrastructure that keeps water flowing for millions of people across the UK.

MWH Treatment is an integrated design and build provider working in the water sector. With over 1400 staff working across eight regional centres, supporting six long-term water sector frameworks and two recently won frameworks, operating both as a sole contractor but also in joint ventures and alliances. 

At MWH Treatment we believe that people matter. We know to build successful, creative teams we need a diverse workforce that can deliver innovative ways of thinking. We provide an environment where you will have the freedom to develop and grow to your full potential, creating opportunity by inviting, embracing, and celebrating difference, our goal as an employer is to motivate, and develop our employees. By fosterin

g a diverse range of talents and perspectives we ensure we have the breadth of viewpoints, experiences, and skills needed to succeed. Embracing diversity of all kinds enables us to provide a work environment and culture that plays a key role in attracting and retaining the right people with the right skills. 

As signatories to the Armed Forces Corporate Covenant, we have made a promise to support our forces, working with the CTP to help ex veterans find work in the civilian world. We also support Mates in Mind, a charitable programme to improve and promote positive mental health in the workplace. We don’t just tick boxes; we live these values every day. 

What MWH offer 

Packages include -  

A competitive salary 

Hybrid Working (Jobs needs dependent) 

Car/car allowance (Jobs needs dependent) 

25 days holiday + Bank Holidays (with an additional 5 days available to buy) 

Contribution Pension scheme 

Life Assurance 

Health Insurance 

Private Medical Insurance 

And many more benefits including – cycle to work scheme, discounts and savings Hub, Kids Pass etc