£55,403. Up to £79,094 additional capability allowance.Published onFull-time (Permanent) £55,403. Up to £79,094 additional capability allowance.Published on 5 November 2025 Deadline 18 November 2025LocationBristol, ManchesterAbout the jobJob summaryThe Government Digital Service (GDS) is the digital centre of government — we are responsible for setting, leading and delivering the vision for a modern digital government.Our priorities are to drive a modern digital government, by:joining up public sector servicesharnessing the power of AI for the public goodstrengthening and extending our digital and data public infrastructureelevating leadership and investing in talentfunding for outcomes and procuring for growth and innovationcommitting to transparency and driving accountabilityWe are home to the Incubator for Artificial Intelligence (I.AI), the world-leading GOV.UK and at the forefront of coordinating the UK’s geospatial strategy and activity. We lead the Government Digital and Data function and champion the work of digital teams across government.We’re part of the Department for Science, Innovation and Technology (DSIT) and employ more than 1,000 people all over the UK, with hubs in Manchester, London and Bristol.The Government Digital Service is where talent translates into impact. From your first day, you’ll be working with some of the world’s most highly-skilled digital professionals, all contributing their knowledge to make change on a national scale.Join us for rewarding work that makes a difference across the UK. You'll solve some of the nation’s highest-priority digital challenges, helping millions of people access services they needGOV.UK Notify makes it easy for public sector service teams to send emails, text messages and letters. Since its launch in 2016, use of GOV.UK Notify has grown exponentially. Today, more than1,600 organisations and 10,976 servicesuse it. We’ve sent over 10.8 billion notifications andcontinue to send millions more notifications every day.GOV.UK Notify is a web application built with Python and Flask, running on Gunicorn. It is supported by several microservices, also written in Python, utilising frameworks and libraries such as Celery, Eventlet, SQLAlchemy, etc.Additionally, GOV.UK Notify utilises AWS RDS (Postgres), AWS SQS, AWS ElastiCache, OpenTelemetry, Prometheus, Grafana and other related services. Concourse CI and Terraform are used to run build-pipelines and manage our infrastructure.For the frontend, we follow theGOV.UK Design System , making use of GOV.UK Frontend components and patterns.As a Senior Developer in GOV.UK Notify you’ll:work as part of a multi-disciplinary agile team, collaborating with frontend developers, content designers, product managers and user researchers to ensure your code puts users first at all stages of developmentwrite clean and secure code following a test-driven approachimplement tools to support development and continuous improvement of the systems you work onsupport the live operation of the services we run during office hours, answering support queries from users, monitoring error rates and responding to incidentsparticipate in out-of-hours support rotas where necessary - you'll be paid an allowance, and a further hourly payment for any duties you perform when on callshare your work and the things you’ve learned through blog posts, show and tells, with the option of presenting at conferences and meetupsuse your learning and development budget to develop your careerPerson specificationWe’re interested in people who:have experience in back-end development, ideally with knowledge of web development in Python, NodeJS or Javahave experience working with cloud based web applications, with technologies such as databases, caching, CDNs, containerisation and Unix-like operating systemshave thorough understanding of software design principles, and an ability to apply themhave proven experience ofmodern software development approaches such as automated testing, test driven development, continuous integration, pair programming, code review and version controlhave understanding of common web security risks such as OWASP Top 10, and the corresponding mitigationsenjoy researching and learning new programming tools and techniques and sharing their skills with othershave experience working in a collaborative environment, and an understanding of the benefits of agile and multi-disciplinary approacheshave a desire to use their skills and experience to make a genuine difference, and to work on important services that are relied upon by millions of peopleprovide technical leadership within team, advising and working with developers to identify the best solutionstake responsibility for solving complex issues, drawing upon a broad knowledge of web technologiestake responsibility for developing others, through line management and/or mentoringhelp recruit other developers and, where appropriate, get involved with sifting and interviewing #J-18808-Ljbffr