HCM Core Functional Consultant

HCM Core Functional Consultant - Remote - Outside IR35

ERP Transformation: SAP On-Premise to Oracle Fusion Cloud

This role is part of an ERP Transformation Programme, migrating from SAP on‑premise HCM to Oracle Fusion Cloud. The HCM Core Functional Consultant is accountable for Core HR functional design, data migration assurance, testing leadership, and business readiness.

The role operates in a complex regulated environment, supporting a diverse workforce and statutory requirements. It works closely with HR, Payroll, Finance, IT, the System Integrator, and programme governance to ensure Oracle Fusion Core HR supports compliant, standardised, and sustainable HR operations.

To lead the translation of SAP HCM Core HR into Oracle Fusion Core HR, ensuring simplified hire‑to‑retire processes, clean and GDPR‑compliant HR data migration, effective UAT, proactive risk management, and high adoption.

• Lead Core HR design across the full hire‑to‑retire lifecycle
• Translate SAP PA/OM processes into Oracle Fusion Core HR best‑practice designs
• Challenge legacy SAP customisation and organization‑specific workarounds
• Design Oracle‑standard worker, assignment, job, grade, position, and organisation structures
• Act as Core HR Design Authority

• Define HR data migration scope (migrate vs archive vs retain read‑only)
• Own HR data migration rules for workers, hierarchies, and absence balances
• Support HR data cleansing prior to System Integrator mobilisation
• Validate migrated HR data and support reconciliation
• Ensure GDPR compliance and data minimisation principles

• Identify and manage HCM functional, data, and adoption risks
• Maintain an HCM risk register with mitigation actions
• Escalate risks impacting Payroll accuracy, security, or statutory obligations
• Support Design Authority and Steer Co decision making

• Define HR test scenarios covering end‑to‑end employee lifecycle
• Support SIT and lead HR involvement in UAT
• Ensure HR design supports Payroll parallel runs
• Support defect triage and prioritisation

• Support HR cutover planning and sequencing
• Validate HR readiness for go‑live
• Provide HR Core support during hypercare and stabilisation

📋 Mobilisation & Discovery
Key

Skills:

SAP HCM knowledge, HR domain expertise, stakeholder engagement
Outcomes:
Clear understanding of SAP complexity, risks, and data readiness

🎨 Design
Key

Skills:

Oracle Fusion Core HR design, process simplification, governance
Outcomes:
Approved future‑state HR design aligned to Oracle standards

📊 Data Migration
Key

Skills:

HR data mapping, cleansing oversight, validation and reconciliation
Outcomes:
Clean, trusted HR data ready for payroll dependency

🔧 Build & Test
Key

Skills:

HR scenario definition, UAT leadership, defect management
Outcomes:
Validated hire‑to‑retire processes

🚀 Cutover & Go‑Live
Key

Skills:

Cutover sequencing, absence balances, readiness assessment
Outcomes:
Controlled go‑live with minimal HR disruption

✅ Post Go‑Live / Hypercare
Key

Skills:

Issue resolution, optimisation, user support
Outcomes:
Stable Oracle Fusion HR adoption

• Proven SAP HCM to Oracle Fusion Core HR implementation experience
• Strong SAP HCM (PA/OM) background
• Oracle Fusion Core HR functional design expertise
• HR data migration and UAT experience
• Experience operating in regulated environments

• Adopt‑not‑adapt mindset
• Strong data ownership and accountability
• Confident challenging legacy practices
• Calm and credible under programme pressure