Hydrologist in London

At AECOM, we're delivering a better world. Whether improving your commute, keeping the lights on, providing access to clean water, or transforming skylines, our work helps people and communities thrive. We are the world's trusted infrastructure consulting firm, partnering with clients to solve the world's most complex challenges and build legacies for future generations.

With accelerating infrastructure investment worldwide, our services are in great demand. We invite you to bring your bold ideas and big dreams and become part of a global team of nearly 50,000 planners, designers, engineers, scientists, digital innovators, program and construction managers and other professionals delivering projects that create a positive and tangible impact around the world.

Join our dynamic and multidisciplinary Water Team as a Principal Hydrologist. You can be based in one of our UK or Ireland offices whilst also taking advantage of our flexible hybrid working model. You will be a key player in delivering impactful water projects across the UK and internationally.

You will lead hydrological assessments that inform flood risk management, major infrastructure planning, water resources strategy, and environmental permitting. This is a senior role combining technical excellence, client engagement, project oversight, and team leadership within a growing water team.

Here's what you'll do:

• Lead hydrological assessments to support flood risk appraisals, infrastructure design, catchment strategies, and environmental impact assessments.
• Provide technical direction on rainfall-runoff modelling, river flow estimation, climate change allowances, and catchment analysis.
• Oversee and review hydrological modelling outputs, ensuring quality, accuracy, and compliance with UK regulatory guidance.
• Act as technical lead on major frameworks and multidisciplinary projects across transport, energy, water, and development sectors.
• Advise clients on flood risk policy, drainage strategy, abstraction licensing, and environmental permitting requirements.
• Mentor and develop junior hydrologists, fostering technical excellence and knowledge sharing.

Join our team, where we don't just construct infrastructure but also uplift communities and enhance lives. Become part of our dynamic Water business, which boasts around 600 experts across the UK & Ireland. Collaborate with top-tier engineers and consultants to deliver a variety of captivating projects, from small initiatives to large-scale ventures, all the way from concept to completion.

Take advantage of career development opportunities, technical practice networks, AECOM University, volunteering days and our flexible hybrid working model to ensure a work-life balance that suits your lifestyle. We recognise that everyone's circumstances are different, so we're happy to discuss part-time or flexible working arrangements that suit you.

Be part of a dynamic team that tackles challenging and impactful water projects. Access to continuous learning and development opportunities. 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.

Degree (BSc/BEng/MSc) in Hydrology, Civil Engineering, Environmental Science, Geography, or a related discipline. Extensive experience delivering hydrological assessments within consultancy or regulatory environments. Experience with hydrological modelling tools and data analysis software. Proven ability to lead projects and provide technical oversight.

If you share our vision and are ready to make a difference in the nuclear industry, we want to hear from you.

We celebrate diversity, including neurodiversity, and believe it enriches our team. If you are an applicant with a disability that requires reasonable accommodation to complete the application process, please contact us at ReasonableAdjustments@aecom.

At AECOM, we value everyone's unique contributions and perspectives. AECOM is committed to maintaining a secure and trustworthy recruitment process and takes any fraudulent hiring activity seriously. To support this commitment, all newly hired employees are required to attend an in-person Day 1 onboarding at an AECOM office location as a condition of employment.

AECOM is the world's trusted infrastructure consulting firm, delivering professional services throughout the project lifecycle – from advisory, planning, design and engineering to program and construction management. Our teams are driven by a common purpose to deliver a better world through our unrivaled technical and digital expertise, a culture of equity, diversity and inclusion, and a commitment to environmental, social and governance priorities.

You will have the flexibility you need to do your best work with hybrid work options. Whether you're working from an AECOM office, remote location or at a client site, you will be working in a dynamic environment where your integrity, entrepreneurial spirit and pioneering mindset are championed.

AECOM provides a wide array of compensation, benefits and well-being programs to meet the diverse needs of our employees and their families. As an Equal Opportunity Employer, we believe in each person's potential, and we'll help you reach yours. We are a Disability Confident Employer and will offer an interview to applicants who have a disability or long-term condition, who meet the minimum/essential criteria for the role.