Climate & Environment Full-time

Senior Hydrologist

AECOM

Posted

Jul 28, 2026

Location

Remote (UK)

Type

Full-time

Mission

What you will drive

Start here. Grow here.

Our Water team is on the lookout for a passionate Senior / Principal Hydrologist to join our dynamic and rapidly growing Water Business Line in Bristol. This is your chance to help deliver high profile, influential projects across the UK and even further afield while working at the heart of one of the UK’s most ambitious and connected engineering hubs.

Here’s what you’ll do:

  • Produce flood hydrological assessments which are assisting the design of flood alleviation schemes, flood risk assessments or the preparation of Environment Agency flood maps.
  • Apply industry standard guidance (FEH) to derive flood flows estimations for a range of catchment types throughout England.
  • Produce high quality technical reports.
  • Use GIS tools (ArcGIS Pro, QGIS) to support your work.
  • Technically review hydrological assessments produced within AECOM.
  • Build relationships with clients and across other technical disciplines.
  • Keep up-to-date with developments in methodologies and guidelines that may affect our services and share them with the team.
  • Be an active member of our national community of hydrologists and hydraulic modellers.

Come grow with us.

We are a growing team who service a wide variety of clients, which will be at your fingertips to explore.

Our current clients in the UK vary from local government, water companies and private developers. We also have large contracts for Middle Eastern clients where you could be working on some of the most ambitious projects in the world. Example projects / frameworks are:

  • Nationally Significant Infrastructure schemes where detailed flood modelling is needed to robustly inform the flood risk assessments.
  • Great Grid Partnership which is enabling the UK’s energy transition and comprises of 17 major onshore and offshore projects.
  • Environment Agency Mapping and Modelling Framework delivering national, catchment and local scale flood risk mapping and modelling to support the EA’s obligations to its customers.
  • Thames Water Professional Services Framework covering the multidisciplinary services, engineering services and environmental services.
  • Severn Trent Water Design Services Framework supporting the construction of major schemes.
  • Southern Water Strategic Delivery Partner supporting Kier in the delivery of non-infrastructure water and wastewater projects.
  • Wessex Water Capital Delivery Framework which comprises projects from optioneering to detailed design, including environmental investigations.

Why Join Us:

We are a close-knit team of engineers, technicians, hydrologists, hydraulic modellers and project managers. Some of us spend most of our working time in the office, and some regularly work from home. We meet every week to check in, share news and plan work. We work hard to give our team development opportunities, whether that is a secondment to see the client’s perspective, an assignment to spend time on site to manage a construction contract, or arranging training to allow you to grow.

In joining the team you will have the opportunity to shape your career, Perhaps you would like to help develop our international offering, drive innovation through technology, or act as a mentoring champion to develop our team. We will make sure you get the opportunities and responsibilities you need.

Now's your time to:

  • Be part of a dynamic team that tackles challenging and impactful water projects.
  • Work alongside industry-leading professionals and thought leaders.
  • Engage in a collaborative and inclusive work environment.
  • Access to continuous learning and development opportunities.
  • Earn a competitive salary and comprehensive benefits package.
  • Enjoy the flexibility to work in a way that fits your lifestyle while supporting a healthy work–life balance.

Profile

What makes you a great fit

Start here. Grow here.

Our Water team is on the lookout for a passionate Senior / Principal Hydrologist to join our dynamic and rapidly growing Water Business Line in Bristol. This is your chance to help deliver high profile, influential projects across the UK and even further afield while working at the heart of one of the UK’s most ambitious and connected engineering hubs.

Here’s what you’ll do:

  • Produce flood hydrological assessments which are assisting the design of flood alleviation schemes, flood risk assessments or the preparation of Environment Agency flood maps.
  • Apply industry standard guidance (FEH) to derive flood flows estimations for a range of catchment types throughout England.
  • Produce high quality technical reports.
  • Use GIS tools (ArcGIS Pro, QGIS) to support your work.
  • Technically review hydrological assessments produced within AECOM.
  • Build relationships with clients and across other technical disciplines.
  • Keep up-to-date with developments in methodologies and guidelines that may affect our services and share them with the team.
  • Be an active member of our national community of hydrologists and hydraulic modellers.

Come grow with us.

We are a growing team who service a wide variety of clients, which will be at your fingertips to explore.

Our current clients in the UK vary from local government, water companies and private developers. We also have large contracts for Middle Eastern clients where you could be working on some of the most ambitious projects in the world. Example projects / frameworks are:

  • Nationally Significant Infrastructure schemes where detailed flood modelling is needed to robustly inform the flood risk assessments.
  • Great Grid Partnership which is enabling the UK’s energy transition and comprises of 17 major onshore and offshore projects.
  • Environment Agency Mapping and Modelling Framework delivering national, catchment and local scale flood risk mapping and modelling to support the EA’s obligations to its customers.
  • Thames Water Professional Services Framework covering the multidisciplinary services, engineering services and environmental services.
  • Severn Trent Water Design Services Framework supporting the construction of major schemes.
  • Southern Water Strategic Delivery Partner supporting Kier in the delivery of non-infrastructure water and wastewater projects.
  • Wessex Water Capital Delivery Framework which comprises projects from optioneering to detailed design, including environmental investigations.

Why Join Us:

We are a close-knit team of engineers, technicians, hydrologists, hydraulic modellers and project managers. Some of us spend most of our working time in the office, and some regularly work from home. We meet every week to check in, share news and plan work. We work hard to give our team development opportunities, whether that is a secondment to see the client’s perspective, an assignment to spend time on site to manage a construction contract, or arranging training to allow you to grow.

In joining the team you will have the opportunity to shape your career, Perhaps you would like to help develop our international offering, drive innovation through technology, or act as a mentoring champion to develop our team. We will make sure you get the opportunities and responsibilities you need.

Now's your time to:

  • Be part of a dynamic team that tackles challenging and impactful water projects.
  • Work alongside industry-leading professionals and thought leaders.
  • Engage in a collaborative and inclusive work environment.
  • Access to continuous learning and development opportunities.
  • Earn a competitive salary and comprehensive benefits package.
  • Enjoy the flexibility to work in a way that fits your lifestyle while supporting a healthy work–life balance.

About

Inside AECOM

Building sustainable legacies through innovative infrastructure and environmental solutions.