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Enterprise Architect

Date: 29-Jan-2023

Location: SLOUGH, GB

Company: Telefonica S.A.

It matters to us that Team O2 is as diverse as the communities we serve. 

We’re aware that we need more diversity in our senior leadership roles, so we welcome and encourage people from all backgrounds to apply. 

Whoever you are, O2 has a place for you. 

Come join us.


Location(s):  Slough

Closing Date: TBC


About the role

The Enterprise Architect is responsible for working with business stakeholders and external partners / consultancies to develop the strategic architecture capability, helping Telefonica UK to realise business outcomes, and adopting digital standards into its architectural landscape.

The focus of this position is to define the capability and align the investment in technology that is used to ensure, activate, and run the network and IT platforms. This role will cover major aspects of smart metering capability and its deployment into the cloud. This will cover all aspects of Data, integration, security, cloud, reporting systems and tools and their integration to the rest of the Enterprise to create a single cohesive solution supporting Business, Operations, and 3rd Parties.


Key Responsibilities

Architecture Governance

  • Be responsible for defining, publishing and communicating architecture principles and technology roadmaps for all area of responsibility.
  • Own a selection of business capabilities and influence the shape and direction of the business capability model.
  • Protects the value of the IT strategy and its underpinning of the business strategy.
  • Along with your EA peers, run Architecture Review Boards to:
  • Provide direction and decide on dispensations received.
  • Architecture contract creation.
  • Agree and publish new principles. 
  • Managing architectural debt.
  • Review changes to the IT strategy.


Stakeholder Management;

  • Be responsible for identifying and managing relevant stakeholders and external partners, working with them proactively to solve problems, lead and drive business outcomes through an awareness of commercial goals within the context of IT. Be responsible for communicating and actively seeking feedback on the architecture roadmaps and plans.



  • Deliver artefacts and supporting documentation
  • Be responsible for the production of architecture artefacts such as; architecture contracts, Line of Business roadmaps and architecture principles. 
  • Maintain business driver’s vs benefits view for business area.
  • Shape and Influence Grow / Transform Vision Cards through outcome statements.
  • Create and maintain architecture artefact templates.
  • Identify for when architecture contracts are required on projects and ensure that they are created.
  • Provide Architecture Governance at all forums.
  • Be responsible for ensuring the outcome of the business planning process aligns to the overall business outcome statements and the IT strategy.
  • Communicating investment vs risk options and the different choices the business can make.


Capability Life Cycle Management;

  • Contribute to the business case for architectural change based on identifying opportunities to improve or simplify architecture in collaboration with other stakeholders.
  • Own and maintain all the data around capabilities and mapping to technology.
  • Work with business stakeholders to produce business outcome statements to shape and influence IT demand.



  • Optimising the Telefonica planning process with regards to sequencing of project delivery by influencing roadmaps and investment
  • Working with right across the business to provide initial architecture steer on projects and new initiatives.
  • Support RFI and RFP processes for new application component assessments, in collaboration with stakeholders (and/or suppliers).
  • Ensure re-use of existing capabilities is maximised and bespoke development is minimised.



  • Identify opportunities for innovation across the enterprise.
  • Drive innovation ideas into POCs for evaluation- securing stakeholder support and funding.


Market Awareness;

  • Attend relevant industry forums to stay abreast with wider industry developments and key business drivers.
  • Leverage expert insights such as Gartner to reinforce recommendations.
  • Awareness of potential new capabilities to appropriate stakeholders.


What We Need from You:

Essential Skills:

  • Experience with applying proven delivery methodologies (TOGAF Certified)
  • Proven experience in at least 2 IT disciplines preferably Service Assurance / Operation Support Systems.
  • Typically, with degree level education
  • Experience managing complex projects
  • Knowledge of Database, Data Warehousing, ETL, BI and Reporting tools and processes.
  • Knowledge of Azure cloud micro service deployments, scalability, and Disaster Recovery



We’ll be sending you emails about the status of your application. To make sure you receive these, please add and to your Safe Senders list.

We’re looking to pay a great compensation package (depending on experience) for this position. We also offer plenty of extras to sweeten the deal, which could include things like bonuses, life assurance cover, health care and lots of flexible benefits.  

Also, every employee has their personal development supported with a LinkedIn learning account; plus other role specific learning available through our award-winning digital learning platform - O2 Campus. 

We also believe a great work-life balance is important, so we’re open to considering flexible working arrangements. Like to know more, feel free to raise it.  

Join us and we’ll encourage you to be bold every day. So take a deep breath, your career is about to go to exciting new places. 

If you have any questions around the role then please email who will be happy to help.