Senior​/Principal Drainage 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. Our people power our performance – we succeed when they do. With countless opportunities to collaborate, learn, and grow, the possibilities for excellence are as varied as every individual.

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.

We help conceive, drive, and implement transport solutions for cities, regions, and asset owners/operators around the globe. From preparing the business case and advising on related issues – such as revenue, procurement, and environmental legislation – to delivering the completed infrastructure and helping maintain it. Our planning, engineering, environmental and management skills cover the whole project cycle. We play a major role in developing and delivering the Global Transport Sector Strategy.

Do you want to be part of an employee‑owned company where our unique independence affords us the opportunity to focus on projects that matter – those delivering positive social outcomes and enhancing the environment? Do you want to harness digital innovation and push the boundaries of current practice in pursuit of technical excellence? Working for a company like ours, with technical excellence at our core, offers you access to industry recognised experts in a variety of disciplines and the support and opportunities you are after for your career progression.

At Mott Mac Donald, we are a collaborative team, excited to solve complex challenges that have a positive impact on the world, and we are always looking for like‑minded people to join us.

We deliver a wide variety of engineering and advisory projects in support to the challenges faced by the transportation sector. As part of this, we are committed to ensuring that highways are resilient to the effects of climate change, safeguarding and enhancing the environment for future generations and providing our clients with asset management advice. We have an ambition to grow into the Spanish market and support infrastructure development for public and private clients.

In the UK, we continue to support High Speed 2 to deliver one of the biggest railway projects in Europe, have been appointed by National Highways to mitigate the risk of pollution from highway drainage outfalls across the country as part of their 2030 Water Quality Programme, and have secured new large highway schemes such as the Lower Thames Crossing and the A9 – Tomatin to Moy, adding to numerous other existing commitments, and are reinforcing our excellent technical teams in response to that.

We are seeking a Senior or Principal Drainage Engineer with experience in both the Spanish and UK markets, and a solid understanding of drainage design to work with us part time or full time and strengthen our global team. This a fantastic professional opportunity for driven individuals to drive our growth in Spain and take the lead on a range of projects in the UK and across the rest of the world.

As part of our team, you will be able to make a difference by:

• Identifying opportunities to pursue in Spain
• Leading a team of drainage design engineers in the design of sustainable drainage infrastructure on prestigious projects
• Contributing to innovative grey and blue‑green solutions and climate change resilience
• Embracing and enhancing digital drainage design delivery solutions

Key responsibilities and duties include:

• Liaising with potential Spanish clients and identifying…