Nick Smith contributed to ONSdigital’s design-system and dis-wagtail repositories, focusing on maintainable, reusable solutions for data visualization and templating. He developed a language-agnostic array extension utility for Nunjucks, relocating and refactoring the function to improve code organization and documentation while ensuring robust error handling and unit test coverage. In dis-wagtail, Nick implemented multi-type charting capabilities for statistical articles, introducing a featured chart component and supporting advanced configuration such as annotations and aspect ratios. His work leveraged JavaScript, Python, and Django, enhancing both frontend and backend systems to support clearer data storytelling and more consistent developer experiences.