Senior Water Quality Modeller

Company: Sweco
Apply for the Senior Water Quality Modeller
Location: Bristol
Job Description:

Senior Water Quality Modeller

Location: Bristol – this role can be worked flexibly with a minimum of 3 days per week in the office. The Senior Water Quality Modeller supports water companies through AMP8 and beyond, addressing critical challenges around water quality, storm overflows and environmental compliance.

Responsibilities

  • Develop, calibrate, audit and interpret models to assess water quality performance within sewerage catchments and receiving waters.
  • Undertake Urban Pollution Modelling (UPM) studies to identify, assess and investigate water quality failures and compliance risks.
  • Develop and appraise improvement options to address identified water quality issues, including CSOs and intermittent discharges.
  • Provide technical assurance and peer review of modelling outputs, reports and proposed improvement options.
  • Advise on the selection and application of appropriate modelling tools and techniques, such as SIMCAT, SAGIS, InfoWorks ICM, MIKE and GIS.
  • Produce Water Framework Directive (WFD) compliance assessments to support environmental assessments and regulatory submissions.
  • Design, model and support the delivery of Natural Flood Management (NFM) measures where appropriate.
  • Prepare technical reports and environmental and water quality impact assessments.

Qualifications

  • Significant experience in water quality and hydrology applied to a range of projects.
  • Degree or equivalent in a relevant subject including geography, engineering, environmental sciences or maths.
  • Strong knowledge and experience of standard hydrological and water quality modelling software and environmental assessment tools.
  • Demonstrated ability to lead and manage projects, working within agreed deliverables, key milestones, project methodology, QA and control strategy.
  • Knowledge of Flood Risk Assessment, Natural Flood Management and Sustainable Drainage (SuDs) techniques.
  • Working towards or holding chartered status from an appropriate institution (C.Eng or C.WEM).

Benefits

  • Flexible and hybrid working (Flexworks Policy).
  • Competitive pension contribution.
  • Life Assurance.
  • Private Medical Insurance.
  • Discretionary Annual Bonus Scheme.
  • Payment of two relevant professional subscriptions.
  • 25 days holiday plus bank holidays, with the option to purchase up to 5 additional days per year.
  • Cycle2Work Scheme.
  • Employee Assistance Programme (wellbeing, mental health, financial and work advice).
  • Employee discounts via Sweco Benefit Select (Faircare).
  • Salary Sacrifice Electric Vehicle Scheme.
  • Tree planting for all new starters.

Equal Opportunity Employer

We are an equal opportunity employer and a Real Living Wage Employer that respects the contributions of all colleagues. Our commitments include the Armed Forces Covenant, a Disability Confident Committed employer status and a guaranteed interview scheme for applicants covered by the Equality Act 2010. We actively promote equality, inclusivity and diversity for everyone and provide reasonable adjustments for applicants with disabilities.

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Posted: June 11th, 2026