Principal Data Scientist

Closing date

02 August 2026

Online assessment

12 – 16 August 2026

Interview dates

02 September (in person)

The Parliamentary and Health Service Ombudsman (PHSO) make final decisions on complaints about UK Government departments and the NHS in England. Our work deals with complex, often sensitive issues, where decisions must be fair, well‑reasoned and backed by evidence. The insight we produce helps identify where public services fall short and supports real improvement.

At PHSO analysis matters. Evidence is closely examined, decisions are open to challenge, and methods must stand up to scrutiny. For a Senior Data Scientist, this means working in an environment where explainability, ethics and sound methodology are essential, not optional. There is space to influence how data science and AI are used responsibly in a highly accountable setting.

Based in Manchester City centre, we offer flexibility built on trust and a culture that values independence, fairness and doing the right thing. If you want to apply your expertise to complex, real‑world problems and see your work shape decisions that affect people’s lives, we offer purpose, challenge and genuine impact.