Service Architect

Public Sector Resourcing, managed by AMS; Greater London; Hybrid; GBP 70,000 - 90,000; Full time

Job summary

National Savings & Investments (NS&I) invites a Service Architect for a 6‑month hybrid contract in London, Durham or Glasgow. Establish and govern the service taxonomy framework, and develop hierarchies across services, capabilities, offerings and applications.

Collaborate with Solution Architects to embed service requirements into designs and drive governance. The role requires extensive experience in large organisations, service design and taxonomy creation, plus ITIL knowledge, with a focus

Qualifications

• Proven experience as a Service Architect within large, complex organisations.
• Experience establishing Service Architecture as a recognised discipline.
• Strong service design and service implementation background.
• Demonstrable experience defining service taxonomy and classification frameworks.
• Experience creating Service Design Packages and Service Design Documents.
• Strong knowledge of ITIL v3 and/or ITIL 4.

Responsibilities

• Establish and govern the organisation's service taxonomy framework.
• Develop and maintain hierarchical service structures across business services, capabilities, service offerings and applications.
• Develop Service Design Packages and associated documentation.
• Define service models, SLAs, support arrangements and operational requirements.
• Collaborate with Solution Architects to incorporate service requirements into solution designs.
• Support service readiness assessments and governance reviews.
• Participate in design assurance and quality gate activities.
• Build strong relationships with business and technical stakeholders.
• Influence teams to adopt service‑oriented practices and ways of working.

Skills

Service Architecture

ITIL v3/v4

Service Taxonomy

Service Design

Stakeholder Management

Job description

On behalf of National Savings & Investments (NS&I), we are looking for a Service Architect (Inside IR35) for a 6‑month contract based Hybrid (two days per week) in London, Durham or Glasgow.

NS&I is one of the largest savings organisations in the UK, operating as a government department and an executive agency.

This role is subject to the Baseline Personnel Security Standard and financial credit checks.

Responsibilities

• Establish and govern the organisation's service taxonomy framework.
• Develop and maintain hierarchical service structures across business services, capabilities, service offerings and applications.
• Develop Service Design Packages and associated documentation.
• Define service models, SLAs, support arrangements and operational requirements.
• Collaborate with Solution Architects to incorporate service requirements into solution designs.
• Support service readiness assessments and governance reviews.
• Participate in design assurance and quality gate activities.
• Build strong relationships with business and technical stakeholders.
• Influence teams to adopt service‑oriented practices and ways of working.

Essential Qualifications

• Proven experience as a Service Architect within large, complex organisations.
• Experience establishing Service Architecture as a recognised discipline.
• Strong service design and service implementation background.
• Demonstrable experience defining service taxonomy and classification frameworks.
• Experience creating Service Design Packages and Service Design Documents.
• Strong knowledge of ITIL v3 and/or ITIL 4.

Please note: this role can only be worked within the UK and is not available Overseas.

EEO Statements

Disability Confident: NS&I guarantees to interview all candidates who have a disability and who meet all the essential criteria for the vacancy. In cases of high volume, the best candidates from within that group will be interviewed. The scheme encourages candidates with a disability and/or neurodivergence to apply. In exceptional circumstances, desirable criteria may include holding active security clearance.

Armed Forces Covenant: NS&I guarantees to interview veterans or spouses / partners of military personnel who meet all the essential criteria for the vacancy. In cases of high volume, the best candidates from within that group will be interviewed. In exceptional circumstances, desirable criteria may include holding active security clearance.