Senior Migration Architect

Senior Migration Architect

Posted 1 day ago by HM Revenue & Customs

Negotiable
Undetermined
Hybrid
England, United Kingdom

Summary: The Senior Migration Architect role involves leading the planning, design, and execution of the ETMP Regeneration Programme, a significant transformation project migrating HMRC’s Enterprise Tax Management Platform from ECC6 to S/4HANA. The position requires extensive experience in S/4HANA migrations and aims to ensure successful delivery through collaboration with senior leadership and various stakeholders. The architect will also be responsible for developing technical documentation and engaging with suppliers to maintain architectural integrity. This role is critical to enhancing HMRC’s core tax accounting and payment capabilities.

Key Responsibilities:

  • Drive the end-to-end delivery of the enterprise architecture for the ETMP Regeneration Programme.
  • Provide architectural leadership and assurance across all stages of S/4HANA migration.
  • Develop and maintain technical documentation, including system architecture diagrams.
  • Prepare and deliver clear, concise briefings to senior leaders.
  • Work across a diverse ecosystem of internal HMRC teams, suppliers, systems integrators, and technology vendors.
  • Collaborate effectively within a multi-disciplinary environment.
  • Review supplier proposals and contribute to commercial discussions.

Key Skills:

  • Hands-on experience in leading and completing S/4HANA migrations.
  • Strong track record of delivering enterprise architecture in large-scale transformation programmes.
  • Ability to operate in large, multi-stakeholder environments.
  • Deep expertise in ECC6, S/4HANA, BW/4HANA, SAP BTP, Fiori, and Integration Suite.
  • Experience with RISE with SAP, SaaS, and PaaS hosting models.
  • Experience reviewing supplier proposals and managing commercials.
  • Ability to communicate complex technical ideas clearly to various audiences.

Salary (Rate): undetermined

City: undetermined

Country: United Kingdom

Working Arrangements: hybrid

IR35 Status: undetermined

Seniority Level: undetermined

Industry: IT

Detailed Description From Employer:

Contingent Labour Contract - Initial 6 Months which may be extended. Hybrid - Any HMRC Regional Centre

We are seeking a highly experienced and delivery-focused Migration Architect to help lead and support senior leadership in the successful planning, design 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 ECC6 to S/4HANA. The role is central to ensuring the successful delivery of this complex and high-impact programme, which underpins HMRC’s core tax accounting and payment capabilities.

Key Responsibilities:

  • Ensure Delivery of the Target Architecture: Drive the end-to-end delivery of the enterprise architecture for the ETMP Regeneration Programme, ensuring successful outcomes across planning, design and implementation phases
  • S/4HANA Migration Leadership: Provide architectural leadership and assurance across all stages of S/4HANA migration, drawing on direct experience of having completed one or more such migrations
  • Architecture Documentation: Develop and maintain technical documentation, including system architecture diagrams
  • Senior Leadership Engagement: Prepare and deliver clear, concise briefings to senior leaders. Translate complex technical concepts into simple, actionable language to support informed decision-making
  • Cross-Team Collaboration: Work across a diverse ecosystem of internal HMRC teams, suppliers, systems integrators (SIs), and technology vendors to ensure architectural alignment and delivery cohesion
  • Multi-disciplinary Teamwork: Operate effectively within a multi-disciplinary environment, collaborating with delivery leads, techno-functional experts, analysts, architects, programme management leads and business stakeholders
  • Commercial and Supplier Oversight: Review supplier proposals, contribute to commercial discussions, and ensure architectural integrity across third-party engagements

Essential Criteria:

  • S/4HANA Migration Expertise: Hands-on experience in leading and completing one or more S/4HANA migrations, including ECC6 transition planning and execution. Knowledge of SAP’s Activate methodology
  • Proven Delivery Experience: A strong track record of delivering enterprise architecture in large-scale, complex transformation programmes
  • Complex Programme Environment: Demonstrated ability to operate in large, multi-stakeholder environments with competing priorities and high delivery expectations
  • SAP Technology Knowledge and Experience: Deep expertise in ECC6, S/4HANA, BW/4HANA, SAP BTP (including major apps such as Work Zone, Build Apps, BPA etc), Fiori, Integration Suite, RISE and the latest SAP product and service offerings
  • Cloud and Hosting Models: Strong experience with RISE with SAP, SaaS, and PaaS hosting models, including architectural design, deployment, integration, networking and security
  • Supplier and Commercial Acumen: Experience reviewing supplier proposals, managing commercials, and working across multiple suppliers, systems integrators (SIs), vendors, and internal teams
  • Communication Skills: Ability to communicate complex technical ideas clearly and effectively to both technical and non-technical audiences, including senior leadership

Desirable Criteria:

  • TRM & PSCD Knowledge and/or Experience: Awareness of SAP Industry Solutions Tax & Revenue Management (TRM) and Public Sector Collections and Disbursements (PSCD)
  • Wider Architecture Knowledge: Enterprise Architecture knowledge and experience or other technologies and domains outside of SAP. Well rounded knowledge of data, integration, networks, security, identity management, etc.
  • Public Sector Experience: Experience of working in the Public Sector, especially taxation, and/or large, complex industries such as Finance, Utilities, etc.