Senior Technical Architect - HMRC - G7

Bristol, East Kilbride, Edinburgh, Glasgow, Liverpool, Manchester, Telford, Worthing

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HMRC is transforming the UK's tax system through cutting-edge digital innovation and the Chief Digital and Information Officer (CDIO) Group is at the heart of that mission.

We are building high-quality digital services that will enhance the customer experience, enable real-time interactions, and make tax simpler and more intuitive for everyone. By equipping our colleagues with modern tools and technologies, we are also reshaping how we work - allowing HMRC to focus its resources where they can deliver the greatest impact.

Chief Engineering & Platform Office (CEPO) - supports the HMRC CDIO group delivering IT projects that enable HMRC's strategy and policies. We design, manage and maintain the IT services that support CDIO platform operations.

Our team is made up of specialists in delivery, business analysis, engineering, and live service support. We work closely with stakeholders across HMRC to ensure our IT systems meet their needs.

Due to the expansion of the Tax, Benefits, and Enterprise Operations team, the current migration project from SAP ECC to SAP S/4HANA, and the desire to build S/4HANA capability, we are bringing knowledge and expertise on S/4HANA into the team.

We are seeking a highly skilled and delivery-focused SAP S/4HANA Technical Expert to support the successful planning, configuration, and execution of the ETMP Regeneration Programme. This is a once-in-a-generation transformation initiative to migrate HMRC's Enterprise Tax Management Platform (ETMP) from SAP ECC6 to S/4HANA. The role is critical to ensuring the technical success of this complex and high-impact programme, which underpins HMRC's core tax accounting and payment capabilities.

Key responsibilities

• S/4HANA Migration Execution: Lead and support the development, testing, and deployment of S/4HANA Integrations.
• Technical Integration: Act as a bridge between functional requirements and technical implementation, ensuring end-to-end solution integrity across SAP modules and integrations.
• Documentation: Oversee, Create and maintain technical specifications, configuration documents, and integration mappings.
• Stakeholder Engagement: Collaborate with business users, architects, functional experts and technical teams to translate requirements into system solutions.
• Cross-Team Collaboration: Work across internal HMRC teams, systems integrators (SIs), and vendors to ensure cohesive delivery and issue resolution.
• Testing and Validation: Support system integration testing (SIT), user acceptance testing (UAT), and cutover planning activities.
• Support and Hypercare: Provide post-go-live support, troubleshoot issues, and contribute to knowledge transfer and training.

Essential Criteria:

• S/4HANA Migration Experience: Hands-on experience configuring and supporting one or more S/4HANA migrations, including ECC6 transition planning and execution.
• Familiarity with SAP Activate methodology.
• SAP Technical Expertise: Deep knowledge of core SAP modules including S/4HANA, BTP, Integration Suite and PI/PO, Work Zone, Build Apps, Fiori, Build Process Automation, and cloud deployment models (e.g., RISE with SAP, SaaS, PaaS).
• Cross-Functional Exposure: Experience working with data, integration, security, and identity management in SAP landscapes.
• Delivery Experience: Proven ability to deliver in large-scale, multi-stakeholder transformation programmes.
• Communication Skills: Strong ability to communicate technical and functional concepts to diverse audiences, including senior stakeholders.
• Industry Specific SAP Knowledge: Relevant to tax, finance, and public sector operations - such as TRM, PSCD, FICA.
• SAP Business Warehousing knowledge: such as BW, BW/4HANA, SAP Analytics Cloud, Datasphere.

Additional Security Information

This role requires the successful candidate to hold or be willing to hold Security Check (SC) clearance.