Infrastructure TDA

Infrastructure Technical Design Authority (TDA) Overview We are seeking an experienced Infrastructure Technical Design Authority (TDA) to support several strategic infrastructure and cloud transformation initiatives within a large enterprise environment. This role will provide technical leadership across infrastructure, cloud, platform and security domains, ensuring solutions are robust, scalable, secure and aligned with architectural standards. The successful candidate will work closely with project teams, architects and stakeholders to define, review and govern technical designs across Azure, Microsoft technologies, virtualisation platforms and hybrid hosting environments.

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Contract Details Role: Infrastructure Technical Design Authority (TDA)
Contract Length: Initial 6 months
Extension: Expected
Location: Belfast preferred, UK-wide candidates considered
Working Pattern: Primarily remote with occasional onsite meetings
Interview Process: Single-stage interview
Rate: Competitive market rates
Key Responsibilities Provide technical leadership across multiple infrastructure projects.
Review, challenge and approve technical designs.
Produce and review High-Level Designs (HLDs).
Produce and review Low-Level Designs (LLDs).
Define and maintain infrastructure standards and roadmaps.
Ensure solutions align with enterprise architecture principles.
Support cloud adoption and infrastructure modernisation initiatives.
Work closely with project teams, engineers and stakeholders to shape technical solutions.
Provide governance and technical assurance throughout project lifecycles.
Support design decisions across infrastructure, cloud, networking, security and hosting platforms.
Technology Environment The environment includes a mixture of:
Microsoft Azure
Microsoft 365
VMware
Virtualisation Technologies
Hybrid Cloud Platforms
Enterprise Infrastructure
Identity & Access Management
Infrastructure Security
Storage & Backup Solutions
Windows Server Technologies
Hosting & Datacentre Services
Essential Experience Candidates should demonstrate Experience in:
Enterprise Infrastructure Engineering
Infrastructure Architecture or Technical Design Authority responsibilities
Infrastructure governance and technical assurance
Azure infrastructure and cloud solutions
Microsoft 365 technologies
VMware and virtualisation platforms
Hybrid cloud and hosting environments
Infrastructure modernisation and migration programmes
Producing and reviewing HLDs and LLDs
Working with senior technical and business stakeholders
Managing technical risk and solution approval processes
Ideal Background Suitable candidates may currently be working as:
Infrastructure TDA
Infrastructure Architect
Technical Architect
Cloud Infrastructure Architect
senior Infrastructure Consultant
Azure Infrastructure Architect
Lead Infrastructure Engineer
Infrastructure Design Authority
Key Attributes Strong communication and stakeholder management skills.
Ability to challenge and influence technical decisions.
Experience operating in complex enterprise environments.
Strong documentation and governance capabilities.
Ability to balance strategic thinking with practical delivery considerations.
This is an excellent opportunity to work on large-scale infrastructure transformation initiatives while operating at the centre of technical decision-making and architecture governance.
Job Title: Infrastructure TDA
Location: Belfast, UK
Job Type: Contract to Hire
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