Hybrid Junior Developer – AI & Data Tools

National Audit Office; Greater London; Hybrid; GBP 38,000 - 47,000; Full time

Job summary

The National Audit Office (NAO) is the UK’s independent public spending watchdog. We are seeking a Junior Developer to join the AI, Data and Analytics Team (AIDA) to design, build, test and maintain digital tools supporting financial audit work across the Financial Audit service line.

This development role suits someone with 1–3 years in a development, data or technical role. You will work independently on coding tasks and collaborate with peers to deliver reliable, well-documented solutions in

Qualifications

• Knowledge of Python and the ability to use it to solve practical development or data problems.
• Knowledge of JavaScript and an understanding of how it is used to build interactive user interfaces or web applications.
• Understanding of programming fundamentals, such as functions, variables, data structures, control flow, unit testing, integration testing and debugging.
• Ability to work with data and apply basic data quality checks, validation and transformation.
• Ability to produce clear, structured and concise written documentation for technical and non-technical audiences.

Responsibilities

• Develop, maintain and improve applications, scripts and tools that support financial audit delivery.
• Write clear, reliable and maintainable code, following agreed team standards and good development practice.
• Support the development of front-end and back‑end components, including user interfaces, APIs and data processing logic.
• Work with structured and semi-structured data, helping to prepare, transform, validate and analyse data for use in audit tools.
• Assist with testing, quality assurance and defect resolution, including documenting test results and maintaining an audit trail.
• Collaborate with colleagues to understand user requirements, translate them into development tasks and deliver outputs to agreed timescales.
• Contribute to documentation, user guidance, technical notes and handover materials so that applications can be supported effectively.
• Learn new tools, frameworks and development approaches as AIDA's technology stack evolves.

Skills

Python

JavaScript

Unit testing

Data handling

Documentation

Tools

Git

CI/CD

Cloud platforms

Job description

The National Audit Office (NAO) is the UK’s independent public spending watchdog. We are seeking a Junior Developer to join the AI, Data and Analytics Team (AIDA) to design, build, test and maintain digital tools supporting financial audit work across the Financial Audit service line.

This development role suits someone with 1–3 years in a development, data or technical role. You will work independently on coding tasks and collaborate with peers to deliver reliable, well-documented solutions in