AtkinsRéalis
Principal Enterprise Architect (CNI)

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Job Description
Overview
Shaping a smarter, more agile world!
AtkinsRéalis is growing its Digital Blueprint consulting team and is looking for Enterprise Architects with extensive experience working with Critical National Infrastructure (CNI) organisations in the transportation (aviation, rail or highways) and nuclear energy sectors. Is this you?
We are looking to build our multi-disciplinary team with people from business, technology or consulting backgrounds who bring architecture expertise to the digital transformation of our CNI clients. We welcome applications from creative and adaptable systems thinkers who want to be part of shaping the future, whilst expanding your own career potential.
When it comes to living your life, we want your role with AtkinsRéalis to be a key part of your personal journey. We have a collaborative inclusive team culture where people will help, guide and mentor you to help you grow. We pitch in and help colleagues because we succeed as a team. Our flexible and remote working policies are designed to support different personal priorities and needs.
Read more about how you can thrive with us:
Your role
As an Enterprise Architect in our Secure Government business unit you'll bring your specialist Critical National Infrastructure (CNI) experience to a wide variety of digital transformation programmes. This could involve working with CNI organisations on enterprise architecture, digital engineering, cyber security or operational technology (OT) projects. It could provide opportunities for overseas working if that’s what interests you. AtkinsRéalis provides significant investment in training and development: we want to help you be successful.
Whilst Architecture experience in digital and operational technology in asset-intensive and heavily-regulated environments is important, we are equally interested in individuals who can bridge the gap between senior decision-makers, technology delivery teams and operational users. We are looking for individuals who:
- Bring credibility with CNI stakeholders, based on a practical understanding of the challenges faced by asset-intensive and heavily-regulated organisations, plus how operational, information and technology ecosystems interact.
- Are confident engaging with stakeholders at all levels, from front-line staff and subject matter experts through to executive decision-makers.
- Can rapidly assimilate complex information, identify patterns and relationships, and apply lessons learnt from previous programmes, systems and real-world usage.
- Possess strong critical-thinking and analytical skills, enabling them to challenge assumptions and develop evidence-based recommendations.
- Combine rigour and pragmatism to governance, assurance and risk management activities; bringing determination and confidence to break deadlocks and chart a path through complex issues.
- Are comfortable operating in ambiguous environments where requirements are still emerging and the pathway to delivery is not always clear.
- Demonstrate creativity and innovation when solving complex challenges involving the safe and efficient use of digital and operational technology.
- Understand the opportunities and limitations of emerging technologies, including Artificial Intelligence, data analytics and automation.
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
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About you
Education:
- Degree-level in a relevant business, technical or analytical subject supported by ongoing professional development.
In-depth knowledge of the UK regulatory environment in your chosen CNI industries. Note: extensive cyber security or OT/IT convergence experience may be a substitute for a second industry.
Leadership and Impact:
- Extensive evidence of shaping business investment decisions and providing architectural leadership that balances strategic outcomes, resilience, risk and affordability e.g. aligning digital transformation, rationalisation or innovation adoption initiatives with business goals and operational needs.
Technical knowledge:
- Familiar with common frameworks and good practice (e.g. TOGAF, INCOSE, DAMA) and modelling languages/notations (e.g. ArchiMate, SysML, BPMN).
Essential Technical knowledge:
- Wide but not deep across software, Infrastructure and Networks, with the ability communicate effectively with non-technical stakeholders and highly technical SMEs alike.
Desirable Technical knowledge:
- We are particularly interested in individuals with experience in Digital Twins, BIM, API Integration, GIS, and Analytics platforms.
- Familiarity with AI-enabled tools and techniques, with the ability to critically evaluate and validate outputs using domain expertise.
Rewards & benefits
Explore the rewards and benefits that help you thrive – at every stage of your life and your career. Enjoy competitive salaries, employee rewards and a brilliant range of benefits you can tailor to suit your own health, wellbeing, financial and lifestyle choices. Make the most of a myriad of opportunities for training and professional development to grow your skills and expertise. And combine our hybrid working culture and flexible holiday allowances to balance a great job and fulfilling personal life.


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About AtkinsRéalis
We're AtkinsRéalis, a world-class engineering services and nuclear organization. We connect people, data and technology to transform the world's infrastructure and energy systems. Together, with our industry partners and clients, and our global team of consultants, designers, engineers and project managers, we can change the world. We're committed to leading our clients across our various end markets to engineer a better future for our planet and its people.
Additional information
Security clearance
This role may require security clearance and offers of employment will be dependent on obtaining the relevant level of clearance. If this is necessary, it will be discussed with you at interview. The vetting process is delivered by United Kingdom Security Vetting (UKSV) and may require candidates to provide proof of residency in the UK of 5 years or longer. If applying to this role please do not make reference to (in conversation) or include in your application or CV, details of any current or previously held security clearance.
Diversity & Inclusion
We are committed to creating a culture where everyone feels that they belong - a place where we can all be ourselves, thrive and develop to be the best we can be. So, we offer a range of family friendly, inclusive employment policies, flexible working arrangements and employee resource groups to support all employees. As an Equal Opportunities Employer, we value applications from all backgrounds, cultures and ability. As a Disability Confident Leader, we are committed to offering an interview to all applicants who have a disability and meet the essential criteria. If you would like to be considered under this commitment, please let us know at the application stage.
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Worker Type
Employee
Job Type
Regular
At AtkinsRéalis, we seek to hire individuals with diverse characteristics, backgrounds and perspectives. We strongly believe that world-class talent makes no distinctions based on gender, ethnic or national origin, sexual identity and orientation, age, religion or disability, but enriches itself through these differences.
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