Drainage Engineer

Mott MacDonald is a global engineering, management, and development consultancy committed to delivering impactful work that shapes the future.

We are a team of over 20,000 experts working across the world in more than 50 countries.
We are proud to be part of an ever-changing global industry, delivering transformative work that’s defining our future. It’s our people who power that performance. As an employee-owned business, we invest in creating a space for everyone to feel safe and valued and empowered with the right tools and support. 

Whether you want to pursue excellence in your specialism or broaden your experience with flexible roles across our business, you’ll be connected to a community of global experts championing you to be your best. Join us and shape your story with Mott MacDonald, where everyone has the opportunity to be brilliant.

Job Description

Applicants must have a strong academic background in Engineering and experience working within a UK-based consultancy, completing flood risk assessments, surface water drainage strategies, and detailed drainage designs using InfoDrainage, MicroDrainage, or Causeway Flow.

Typical responsibilities include:

• Preparation of DMRB design reports and technical specifications for stormwater drainage and related works.


• Responsible for designing all aspects of drainage for highways, rail, and urban development projects. Exposure to aviation drainage is an added advantage.


• Day-to-day project management, including the delivery of concept studies, detailed designs, and construction drawings.


• Liaison with UK offices, assisting in the preparation of fee proposals and financial control of projects when acting as a package project manager.


• Ensuring projects are delivered on budget, on schedule, and to technical standards, while meeting QA, CDM, sustainability, and HSE requirements.


• Direct line management responsibilities, including mentoring and managing early-career professionals, ensuring technical excellence in all deliverables.


• Maintaining a positive working environment within the team.

Candidate Specification :

• Minimum of 5 years of professional experience in the relevant field.


• Strong understanding of hydraulic and hydrological principles.


• Detailed drainage designs using MicroDrainage and InfoDrainage. Ability to execute high-quality SuDS designs using InfoDrainage and Flow.


• Ability to analyze technical design problems and propose innovative solutions to improve outcomes and processes.

Flexible working
At Mott MacDonald, we support our staff to create work-life balance which works for them and welcome candidates looking for career flexibility. We are open to discussing flexible working at interview stage.

Our benefits package is designed to enhance your experience:

• Agile working


• Critical illness and compassionate leave


• Paternity Leave


• Group term life insurance, and Group medical insurance coverage


• Career mobility options


• Short and Long-term global employment opportunities


• Global collaboration and knowledge sharing