Principal Hydrologist

Company Description

Lead hydrology projects that protect communities and shape the future of water!

You will be based in one of our UK or Ireland offices and work within a flexible hybrid model. In this senior role you will lead technical, client‑facing and project‑management activities for high‑impact water projects across the UK and internationally.

• 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.
• Support business development activities, including bid preparation and client relationship management.

• 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.
• Strong knowledge of UK hydrological guidance (e.g., FEH methods, Flood Estimation Handbook, EA guidance).
• Experience with hydrological modelling tools and data analysis software.
• Proven ability to lead projects and provide technical oversight.
• Chartered status (CEng, CSci or CEnv) or working towards chartership.
• Excellent communication skills with experience engaging clients and stakeholders.

• Be part of a dynamic team tackling 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.
• 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.

All your information will be kept confidential according to EEO guidelines. 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 criteria for the role.