Overview
Role: Enterprise Architect
Location: London, UK
Type: Contract (Outside)
Duration: 6 Months
We are looking for an experienced Enterprise Architect to join on a contract basis, with a focus on the HR domain highly desirable. The role will provide architectural leadership, work directly with executives, and deliver clear roadmaps to shape future transformation. The candidate should bring proven expertise in HR systems (Core HR, Payroll, Talent, Learning), strong knowledge of EA frameworks, and hands-on experience with EA tooling such as LeanIX. Key deliverables will include HR capability models, data catalogues, transformation roadmaps, Application Architectures, Integration Architectures and executive-level presentations. The ideal candidate can operate independently, engage confidently at senior level, and leave behind reusable artefacts and knowledge for the permanent EA team.
Key Responsibilities
* Develop and maintain HR capability models, data catalogues, and system inventories in enterprise architecture tools in LeanIX.
* Produce transformation roadmaps aligned to business objectives and IT strategy.
* Engage with executives and senior stakeholders to translate business priorities into architectural deliverables.
* Define and apply EA standards, patterns, and governance processes.
* Evaluate HR and adjacent domain solutions, including SaaS platforms and integration options.
* Provide architectural oversight on HR system integration, data flows, and interoperability.
* Ensure HR technology roadmaps reflect security, compliance, and data protection requirements.
* Deliver clear and actionable artefacts (heatmaps, reference architectures, roadmaps) to support investment and change decisions.
* Transfer knowledge and leave behind reusable materials to support the permanent architecture function.
Required Skills & Experience
* Proven track record as an Enterprise Architect, with visibility at executive level.
* Strong HR domain expertise (e.g. Core HR, Payroll, Talent, Learning, Workforce Planning).
* Proficiency in EA frameworks and methods.
* Experience with enterprise architecture tooling (LeanIX).
* Ability to design and communicate transformation roadmaps and capability models.
* Strong knowledge of integration approaches, APIs, and data management within HR systems.
* Awareness of security, GDPR, and compliance requirements.
* Excellent communication and stakeholder management skills, able to influence executives and technical teams alike.
* Able to deliver quickly, operate independently, and focus on defined outputs.
Example Deliverables
* HR capability model and data catalogue in EA tool.
* Transformation roadmap for HR domain.
* Executive-level presentation packs with recommended options and trade-offs.
* Documented design principles and guardrails for HR technology.
* Knowledge transfer and handover to permanent EA team.
GCS is acting as an Employment Business in relation to this vacancy
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