Senior Developer

Job summary

The 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 services
• harnessing the power of AI for the public good
• strengthening and extending our digital and data public infrastructure
• elevating leadership and investing in talent
• funding for outcomes and procuring for growth and innovation
• committing to transparency and driving accountability

We 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 need

Job description

Former DSIT recruitment campaigns are continuing as usual, but candidates should be aware that following the Government’s announcement on the changes to some civil service departments, roles will be subject to the machinery of government moves and will ultimately be in one of the new departments. We will provide more information if you are selected for a role. This work remains of high importance to the civil service, and we thank you for your continued interest.

The National Data Library will be a single trusted gateway to curated, high-quality public sector data. We are transforming the government’s open data portal, data.gov.uk into the National Data Library to improve how we support problem solvers to use public data. We have an ambitious roadmap with the goal to maximise the use of available data to make good decisions, build innovative services, learn and experiment.

As a Senior Developer, you’ll play a key role in building and improving the performance of the National Data Library platform.

Read about what it’s like working at GDS as a developer on the GDS blog.

As a Senior Developer, you’ll:

• work within a multi-disciplinary product team and lead the design, development, and maintenance of robust, scalable open data services and APIs
• provide strategic technical leadership by setting software architecture, engineering practices, and technical direction across the team
• define and evolve scalable, secure design patterns and coding standards, ensuring alignment with GDS standards and cross-government platforms
• collaborate with teams to select technologies, shape roadmaps, and deliver resilient, maintainable digital services that meet programme goals
• represent the department at technical forums, open-source communities, and government working groups
• ensure delivery aligns with the Service Standard, Technology Code of Practice, and departmental governance processes

Person specification

We’re interested in people who have experience:

• collaborating effectively with others to develop, deploy and improve containerised cloud-based applications; and can demonstrate strong coding ability in Python and familiarity with HTML, CSS and JavaScript
• using modern software development principles and supporting web application technologies including Docker and Kubernetes; and can demonstrate experience using GitHub as a version control system to document development effectively
• communicating effectively with non-technical users and explaining complex technical concepts in a clear, accessible way
• identifying, locating and fixing service faults
• designing systems of moderate risk, impact and complexity; selecting appropriate design standards, methods and tools; and reviewing designs to ensure suitable technology choices, efficient resource use and effective system integration.
• defining integration builds, coordinating build activities across systems, and understanding how to undertake and support integration testing activities
• understanding common web security risks such as OWASP Top 10, and the corresponding mitigations
• working under guidance to identify process optimisation opportunities and contributing to the implementation of proposed solutions

Benefits

There are many benefits of working at GDS, including:

• flexible hybrid working with flexi-time and the option to work part-time or condensed hours
• a Civil Service Pension with an average employer contribution of 28.97%
• 25 days of annual leave, increasing by a day each year up to a maximum of 30 days
• an extra day off for the King’s birthday
• an in-year bonus scheme to recognise high performance
• career progression and coaching, including a training budget for personal development
• a focus on wellbeing with access to an employee assistance programme
• job satisfaction from making government services easier to use and more inclusive for people across the UK
• advances on pay, including for travel season tickets
• death in service benefits
• cycle to work scheme and facilities
• access to an employee discounts scheme
• 10 learning days per year
• volunteering opportunities (5 special leave days per year)
• access to a suite of learning activities through Civil Service learning

Any move to Government Digital Service from another employer will mean you can no longer access childcare vouchers. This includes moves between government departments. You may however be eligible for other government schemes, including Tax Free Childcare. Determine your eligibility at https://www.childcarechoices.gov.uk

Office attendance

The Department operates a discretionary hybrid working policy, which provides for a combination of working hours from your place of work and from your home in the UK. The current expectation for staff is to attend the office or non-home based location for 40-60% of the time over the accounting period.

DSIT does not normally offer full home working (i.e. working at home); but we do offer a variety of flexible working options (including occasionally working from home).

Things you need to know

Artificial intelligence

Artificial intelligence can be a useful tool to support your application, however, all examples and statements provided must be truthful, factually accurate and taken directly from your own experience. Where plagiarism has been identified (presenting the ideas and experiences of others, or generated by artificial intelligence, as your own) applications may be withdrawn and internal candidates may be subject to disciplinary action. Please see our candidate guidance (opens in a new window) for more information on appropriate and inappropriate use.

Selection process details

The standard selection process for roles at GDS consists of:

• a simple application screening process - We only ask for a CV and cover letter of up to 750 words. Important tip - please ensure that your cover letter details how you meet the following skills and experience listed in the “person specification” section above:
• collaborating effectively with others to develop, deploy and improve containerised cloud-based applications; and can demonstrate strong coding ability in Python and familiarity with HTML, CSS and JavaScript
• using modern software development principles and supporting web application technologies including Docker and Kubernetes; and can demonstrate experience using GitHub as a version control system to document development effectively
• communicating effectively with non-technical users and explaining complex technical concepts in a clear, accessible way
• a 20 minute phone screen
• a 90-minute interview (conducted over video conferencing); this will consist of a 60-min technical exercise where you’ll work with another engineer from the team to solve a self-contained programming problem, and a 30-min section at the end for general assessment questions. The technical exercise will be given to you in writing. You'll be asked to discuss the problem with the engineer, devise a plan for solving it, and then to write code to solve the problem. As well as your programming and unit testing skills, we'll be evaluating how you communicate and collaborate, and how you break down the problem. You'll use your own development environment for this (conducted over video conferencing).

In the event we receive a high volume of applications, we will conduct the initial sift against the lead criteria which is:

• collaborating effectively with others to develop , deploy and improve containerised cloud-based applications; and can demonstrat e strong coding ability in Python and familiarity with HTML, CS S and JavaScript

In the Civil Service, we use Success Profiles to evaluate your skills and ability. This gives us the best possible chance of finding the right person for the job, increases performance and improves diversity and inclusivity. We’ll be assessing your technical abilities, skills, experience and behaviours that are relevant to this role.

For this role we’ll be assessing you against the following Civil Service Behaviours:

• working together
• changing and improving
• making effective decisions

We’ll also be assessing your experience and specialist technical skills against the following skills defined in the Government Digital and Data Capability Framework for the Senior Developer role:

• programming and build (software engineering)
• modern development standards
• user focus
• availability and capacity management
• development process optimisation
• information security
• service support
• systems design
• systems integration

• Want to know more about who Government Digital and Data are? Click Here
• Recruitment Timeline
• Sift completion: Monday 19th October 2026
• Phone screens: starting from Monday 26th October 2026
• Panel interviews: Starting from Wednesday 4th October 2026

Candidates that do not pass the interview but have demonstrated an acceptable standard may be considered for similar roles at a lower grade.

A reserve list will be held for a period of 12 months, from which further appointments can be made.

The Civil Service is committed to attract, retain and invest in talent wherever it is found. To learn more please see the Civil Service People Plan and the Civil Service D&I Strategy .

Please note that this role requires SC clearance, which would normally need 5 years’ UK residency in the past 5 years. This is not an absolute requirement, but supplementary checks may be needed where individuals have not lived in the UK for that period. This may mean your security clearance (and therefore your appointment) will take longer or, in some cases, not be possible.

For meaningful checks to be carried out, you will need to have lived in the UK for a sufficient period of time, to enable appropriate checks to be carried out and produce a result which provides the required level of assurance. Whilst a lack of UK residency in itself is not necessarily a bar to a security clearance, and expectation of UK residency may range from 3 to 5 years. Failure to meet the residency requirements needed for the role may result in the withdrawal of provisional jobs offers.

Sponsorship

DSIT cannot offer Visa sponsorship to candidates through this campaign. DSIT holds a Visa sponsorship licence but this can only be used for certain roles and this campaign does not qualify.

Feedback will only be provided if you attend an interview or assessment.

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