Agentic AI Engineer Salary: London: £60,670 - £67,500 / National: £57,670 - £64,500. If the successful candidate is a current Civil Servant joining on level transfer, HM Treasury will honour their current substantive salary if higher. Contract Type: Temporary up to 12 months/ Loan (potential to become permanent) Working Pattern: This post is available on a full time, part time or job share basis, and flexible working hours can be accommodated. Location: London (1 Horse Guards Road) or Darlington (Feethams House) This role will play a critical part in shaping how HM Treasury designs, builds and governs agentic AI systems. About the Team The Data Hub is a centre of excellence for advanced analytics and data management in HM Treasury. Collaborating with partners inside and outside government, we implement the Treasury’s data strategy through developing the organisation’s data capability and driving data-led transformation across the department. The Hub also provides strategic coordination and support to teams within the department, bringing data tools and technologies to bear on new and existing data sources. It applies innovative methods to enable rich analysis and support HMT’s departmental objectives, delivering new insights and improving decision-making. Within the Data Hub, this role will focus on the emerging use of agentic AI systems, working at the intersection of data engineering, AI capability and governance. You will join a multidisciplinary team of data engineers, data scientists and generalists who collaborate closely, value learning and knowledge sharing, and work on products used widely across the organisation. About the Job You will lead the technical back‑end development of agents used across the organisation, ensuring they are reliable, secure, well‑governed and aligned with departmental standards. The post holder will combine strong data engineering expertise with a good understanding of AI systems, security considerations, and the confidence to work with a wide range of stakeholders to support safe and effective deployment. We are not looking for you to have all the required skills already – however, we expect you to have a relevant background, skills and demonstrate the willingness and ability to learn as you go. Key accountabilities include: Design and build the technical back‑end for agentic AI systems, including data pipelines, orchestration layers and integrations, ensuring solutions are scalable, secure and maintainable. Establish and implement governance and technical controls for agentic AI, covering areas such as logging, monitoring, auditability, access control, and safe interaction with data and systems. Develop and maintain reusable agent frameworks and services, enabling teams across HM Treasury to deploy specialist agents efficiently and consistently. Work closely with security, data protection and architecture colleagues to ensure agentic AI solutions comply with organisational policies and wider government standards. Collaborate with policy, analytical and operational teams to understand business needs and translate them into robust technical solutions. Provide expert technical advice and guidance on agentic AI and supporting data infrastructure to colleagues across the department. Promote good engineering practice, including clear documentation, code quality, testing, and knowledge sharing within the Data Hub and beyond. Support capability building across the organisation, helping teams understand how to safely adopt and use agent-based AI solutions. About You We are looking for proven experience in designing and building robust back‑end systems, such as data pipelines, services or orchestration layers, that are scalable, secure and maintainable as well as having demonstrable experience applying technical governance and controls to complex systems, including areas such as logging, monitoring, audit-ability, access management and safe interaction with data. We would like you to have the ability to provide credible technical leadership and advice, including explaining complex concepts clearly, promoting good engineering practice, and supporting others to adopt solutions safely and confidently. Some of the Benefits our people love! 25 days annual leave (rising to 30 after 5 years), plus 8 public holidays and the King’s birthday (unless you have a legacy arrangement as an existing Civil Servant). Additionally, we operate flexitime systems, allowing employees to take up to an additional 2 days off each month Flexible working patterns (part-time, job-share, condensed hours) Generous parental and adoption leave packages Access to a generous Defined Benefit pension scheme with employer contributions of 28% Access to a cycle-to-work salary sacrifice scheme and season ticket advances A range of active staff networks, based around interests (e.g. analysts, music society, sports and social club) and diversity For more information about the role and how to apply, please follow the apply link.