Public Sector Resourcing
Service Architect

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On behalf of National Savings & Investments, we are looking for a Service Architect (Inside IR35) for a 6 Month contract based Hybrid in either London, Durham or Glasgow two days per week.
NS&I is one of the largest savings organisations in the UK with more than 24 million customers and over £218 billion invested. We are both a government department and an Executive Agency of the Chancellor of the Exchequer. Our origins can be traced back more than 150 years to 1861.
This role is subject to Baseline Personnel Security Standard and financial credit checks.
About the Role
As a Service Architect, your main responsibilities will be:
- 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.
Reasons to use Rodeo
I’m in my final year doing Economics and I don’t know whether to apply for grad schemes now or do a masters first. What do you think?
Honest answer — it depends on where you want to end up. A lot of top grad schemes (Big 4, civil service, banking) don’t need a masters. Let’s look at the ones you’d be competitive for now, and we can decide if a masters actually adds anything.
Also worth knowing: most autumn 2026 applications are open now. Timing matters more than you think.
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Graduate Consultant — 2026 Scheme
Why you're a good match
StrongYour economics background and your summer at a regional bank line up with what PwC looks for on the consulting scheme. Applications close in four weeks.
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Why you're a good match
You’ve got the grades and the economics background, and your bank internship is exactly the experience this scheme looks for. Apply soon — deadlines close within the month.
Experience fit
Your summer at the bank plus your econometrics coursework map directly to the day-one responsibilities on this scheme — client modelling, market briefings, and deal support.
Only hits
No noise. No "maybe this fits." Just roles with a clear explanation of why they're right — and where to focus when applying.
Essential Requirements
- 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 be aware that this role can only be worked within the UK and not Overseas.
Disability Confident
As a member of the Disability Confident Scheme, NS&I guarantees to interview all candidates who have a disability and who meet all the essential criteria for the vacancy. In cases where we have a high volume of candidates who have a disability who meet all the essential criteria, we will interview the best candidates from within that group. This scheme encourages candidates with a disability and/or neurodivergence to apply. In exceptional circumstances, we may also need to apply the desirable criteria in our shortlisting process which may include holding active security clearance.


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Armed Forces Covenant
National Savings & Investments guarantees to interview veterans or spouses / partners of military personnel who meet all the essential criteria for the vacancy. In cases where we have a high volume of ex-military candidates / military spouses or partners, who meet all of the essential criteria, we will interview the best candidates from within that group. In exceptional circumstances, we may also need to apply the desirable criteria in our shortlisting process which may include holding active security clearance.
In applying for this role, you acknowledge the following "this role falls in scope of the Off Payroll Working in the Public Sector legislation. Any rates of payment quoted will reflect the gross rate per day for the assignment and will be subject to appropriate taxes and statutory costs. As such the payment to the intermediary and your income resulting from this contract will be different".
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