Wastewater Modeller | Hybrid Work, Impactful Modelling

Southern Water; Brighton; Hybrid; GBP 30,000 - 50,000; Full time

Job summary

Southern Water is seeking a Wastewater Modeller for our Falmer team. The role is hybrid with occasional site visits, and offers a permanent contract with up to £50,000 depending on skills and experience.

You will build and maintain hydraulic models, analyse data, and support planning and regulatory programmes across the region. A 3–5 year modelling track record and proficiency with InfoWorks ICM are essential.

Qualifications

• 3–5 years of experience in wastewater modelling.
• Experience using hydraulic modelling tools such as InfoWorks ICM.
• Strong analytical and problem-solving skills with attention to detail.
• Ability to interpret complex data and turn insights into actionable recommendations.
• Collaborative mindset and ability to work across multidisciplinary teams.
• A relevant technical qualification (engineering, environmental science, geography, maths or similar).
• Either recently chartered or working toward professional chartership.

Responsibilities

• Build, develop, and maintain hydraulic models of wastewater networks and treatment systems.
• Analyse operational, GIS, and asset data to understand network behaviour and highlight risks.
• Support planning, design, and regulatory programmes through evidence based modelling outputs.
• Work with engineering, operations, and environmental teams to address flooding, pollution, infiltration, capacity constraints, and resilience issues.
• Translate modelling outputs into clear, practical recommendations for technical and nontechnical audiences.
• Contribute to continuous improvement in modelling processes, tools, and data quality.

Skills

Wastewater modelling

Data analysis

Cross-functional collaboration

Education

Engineering or environmental science degree

Tools

InfoWorks ICM

GIS

Job description

Southern Water is seeking a Wastewater Modeller for our Falmer team. The role is hybrid with occasional site visits, and offers a permanent contract with up to £50,000 depending on skills and experience.

You will build and maintain hydraulic models, analyse data, and support planning and regulatory programmes across the region. A 3–5 year modelling track record and proficiency with InfoWorks ICM are essential.