Principal Process Engineer

Mott Mac Donald is a global engineering, management, and development consultancy with over 20,000 employees across more than 50 countries and 140+ offices.

We work across incredible global industries, delivering exciting work that is defining our future and making an important societal impact in the communities we serve.

Whether you want to grow as a subject matter expert or broaden your experience with roles across our international community, you’re surrounded by global specialists who want to combine their expertise and champion you to be your best. As a proudly employee‑owned business, we benefit our clients, our communities, and each other, investing in creating the right space for everyone to feel empowered, included, and valued.

Whatever your ambition, Mott Mac Donald is where people come to be brilliant.

The Water Utilities Division is Mott Mac Donald’s centre of excellence for responding to the UK and Ireland's water and wastewater challenges. The work we do is at the forefront of ensuring safe water supplies for future generations, preventing urban flooding, and improving the health of our rivers and coastal environments. Our multi‑disciplinary teams provide a variety of services throughout the full project life cycle, from advisory services and feasibility studies to outline and detailed design.

Together, we deliver best‑in‑class solutions to our clients while offering diverse and technically stimulating opportunities to our people.

We have an exciting opportunity for a talented Senior Process Engineer to join our team in Spain to support the delivery of our UK and Ireland clients’ water and wastewater programmes.

Key responsibilities and duties include:

• Undertaking studies, concept, preliminary and detailed water and wastewater treatment design
• Project management duties, including programme and financial management for small to medium sized projects with a process focus
• Conduct discipline checker role on standard outputs
• Interfacing and liaising with clients and other stakeholders
• Mentoring and contributing to the development of junior staff
• Working with resource coordinators to manage project resources and to grow and develop our capability through recruitment and training
• Business development including providing specialist support to our Account Leaders and Practices and guiding on proposals and tenders in the water and wastewater fields
• Challenge of the client’s technical standards and the acceptance of waivers and deviations, relevant to their discipline

At Mott Mac Donald you will have control of your own career path and great prospects for career progression as the business continues to grow. We can offer development in technical, management or client‑facing directions.

We are looking for a motivated individual, keen to make a difference in the sector, take wide responsibilities and progress professionally.

• Degree in Chemical Engineering or related engineering field
• Chartered Status (CEng) with a recognised Professional Institution
• Significant experience in development and delivery of outline, feasibility and detailed process engineering design solutions
• Good understanding of conventional and innovative water and/or wastewater treatment technologies
• Track record in conducting water and/or wastewater treatment plant and process root‑cause analysis reviews
• Ability to support process elements of bids, fee proposals or offers of service
• Ability to check and review technical deliverables, calculations and reports
• Strong communication skills to interact with other disciplines and clients, and to develop and promote the team
• A team leader capable of managing and motivating individuals to consistently delivery
• Willingness to contribute to and develop technical knowledge networks
• A drive to be abreast of professional development and knowledge of current and emerging technical solutions
• Track record of using wastewater modelling tools such as Bio Win
• Understanding of key water sector treatment and sustainability needs

Experience in the UK water sector would be advantageous although not necessary.

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