Job Details
Closing Date: 2026-06-21
Title: Finance Business Partner – Wastewater Capital Delivery
Location: Durrington, Worthing (Hybrid)
Contract Type: Permanent
Hours: Full time, Monday to Friday (flexible working options considered)
Salary: Up to £65,000 per annum, depending on skills and experience, plus benefits
About the Role
Financial leadership within Southern Water’s AMP8 Wastewater Capital Delivery function, ensuring investment decisions are robust, efficient and aligned to regulatory commitments while driving efficiencies and value for money.
Responsibilities
* Serve as the Finance Lead for Wastewater Capital Delivery, providing trusted financial advice and insight to senior stakeholders across AMP8 programmes and portfolios.
* Own the AMP8 wastewater CAPEX budget, including profiling, in‑year forecasting and long‑term outlook, with clear articulation of risks, opportunities and delivery confidence.
* Support the business to challenge costs and drive efficiencies, ensuring capital solutions are affordable, efficient and aligned to Ofwat’s value for money expectations.
* Provide robust financial input into investment decisions, business cases and change control, ensuring spend remains aligned to regulatory allowances and outcomes.
* Deliver high‑quality financial analysis, including scenario modelling, cost sensitivity and options appraisal, to support prioritisation and delivery trade‑offs.
* Produce, develop and improve AMP‑focused CAPEX and performance reporting, providing clear insight into spend, forecast outturn, efficiency delivery and regulatory performance.
* Provide strong financial governance and cost assurance across capital programmes and projects, recommending corrective actions where delivery or affordability risks arise.
* Partner with engineering, delivery, commercial and asset teams to embed strong cost management, control assurance and efficient ways of working.
* Support continuous improvement of forecasting, reporting and financial processes to enhance transparency, challenge and responsiveness throughout AMP8.
Essential
* Experience in Finance Business Partnering, Management Accounting, FP&A or a similar commercial finance role, with demonstrable exposure to capital investment or regulated delivery environments.
* Strong analytical skills, with the ability to interrogate complex, imperfect data and provide clear, credible insight and challenge.
* Proven ability to constructively challenge costs, influence delivery decisions and support efficiency opportunities without compromising outcomes.
* Excellent communication skills, with confidence engaging senior operational, engineering and programme stakeholders.
* Ability to work autonomously, manage competing priorities and make sound judgements in a fast‑moving AMP delivery environment.
* Strong commercial awareness and understanding of project, programme or asset‑based delivery drivers.
* Advanced Microsoft Excel skills and strong capability across core Microsoft Office tools.
Desirable
* A professional accounting qualification (or qualification in progress); qualified by experience will also be considered.
* Experience within utilities, regulated environments, infrastructure or asset‑intensive industries, particularly CAPEX‑heavy organisations.
* Understanding of Ofwat regulation, AMP frameworks, cost assessment principles.
* Experience using Power BI or similar financial reporting and visualisation tools, or a strong willingness to learn.
Our Commitment to Diversity
We welcome applicants from all backgrounds, identities and experiences. We do not discriminate based on race, ethnicity, gender, sexual orientation, age, disability, religion or any other protected characteristic. If you need reasonable adjustments during the recruitment process, please let us know.
Additional Information
In line with Southern Water’s security requirements, successful candidates will be required to provide evidence of their identity, eligibility to work in the UK, criminal record check (DBS) and verification of their employment and/or education history for the past three years. Appointment to this role is subject to the successful completion of all pre‑employment checks, including security vetting. If a candidate does not meet the required security standards or fails to pass the vetting process, Southern Water reserves the right to withdraw the offer of employment. Some positions may also require higher levels of security vetting, which may involve providing additional documentation.
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