Senior Infrastructure Architect

Overview

Senior Infrastructure Architect role at Transport for London. Salary: £78,000-£85,000 dependent on skills, knowledge & experience. Benefits include free travel across TfL services, Final Salary Pension and 30 days annual leave. Location: North Greenwich, London - Hybrid Working. TfL operate a Hybrid Working policy with a maximum of 50% of time working from home a month, averaging 2-3 days a week in the office.

As a Senior Infrastructure Architect in the Hosting and Infrastructure Architecture team at TfL you’ll be at the heart of major projects and programmes that continually improve the travel experience in London. You will develop new solutions in Public and Private Cloud to deliver initiatives across cyber security, customer facing services, revenue collection, end user computing, and internal systems that keep the business running.

What You’ll Be Doing

You’ll be responsible for the end-to-end lifecycle of specific infrastructure products – from conceptualisation and business case development, right the way through to shaping achievable strategies and roadmaps. You will be supported by the Project Manager, Business Analyst, Development Solution Architecture and Test Teams to explore high and low-level designs, before deployment and operation. You will work with third-party suppliers to ensure proposed solutions meet business and technical requirements.

Knowledge And Experience

We are looking for someone with expert knowledge across at least 3 of the following infrastructure technologies:

• Virtualisation platforms (e.g. Azure Local, VMware, Hyper-V)
• Hyper Converged Infrastructure and Virtual Storage Attached Networking
• Cloud platforms, including features and capabilities with providers such as Azure and AWS
• Networking and connectivity (e.g. TCP/IP, DNS, VPNs, proxies, load balancing)
• Enterprise Operating Systems and Databases (e.g. Windows Server, RedHat Enterprise Linux, Oracle DBEE, SQL Server)
• We would be advantageous to demonstrate knowledge of the following: Enterprise Security (e.g. IDS/IPS, Encryption, PKI); Microsoft 365 platforms, Exchange Online, Teams, SharePoint, EntraID; additional network technologies (firewalls, switching and routing) and network architecture; managing contractual issues in a project environment; project management tools and techniques; certification in an Enterprise Architecture Framework such as TOGAF

The ideal candidate would also be educated to degree level or possess relevant professional experience.

In Addition To Being Skilled In

• Strong infrastructure architecture skills in architecting technology components across software, infrastructure and networks.
• Ability to take a loose set of requirements and build a high-level architecture using common standards, refining as information evolves.
• Proven ability to analyse complex components, identify decision points, draw conclusions and produce design artefacts.
• Ability to communicate effectively, both orally and in writing, with a broad group of stakeholders including project managers, business analysts, developers, engineers and testers.
• Experience of designing and delivering systems using industry standard frameworks and open standards.
• Ability to work independently and as part of a team.
• Delivery-focused with the ability to prioritise tasks in a high-pressure environment to meet deadlines.

Advert closes on Sunday 14th September 2025 at 23.59

NB: if you already applied to this role within the last 6 months, please do not apply again.

Benefits

• Final salary pension scheme
• Free travel for you on the TfL network
• Reimbursement of 75% of the cost of a standard class ticket for National Rail travel from home or 75% reimbursement on a 28-day flexi ticket
• 30 days annual leave plus public and bank holidays
• Hybrid working approach
• Private healthcare discounted scheme (optional)
• Tax-efficient cycle-to-work programme
• Retail, health, leisure and travel offers
• Discounted Eurostar travel

Equality, diversity and inclusion

We are committed to equality, diversity and inclusion. We aim to be a disability confident employer and guarantee an interview to any disabled candidate who meets the essential criteria. We also use anonymising software to remove identifying information from CVs and cover letters to promote fairness. We welcome flexible working arrangements and invite candidates to discuss needed flexibility at interview.

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