Job Vacancy Technical Architect

In this role, you will take ownership of reviewing, reconstructing and maintaining technical designs across a complex application estate. Working under the direction of the Application Upgrade Programme (AUP) Solution Architecture function, you’ll assess existing High Level Designs (HLDs), investigate gaps and inconsistencies, and work with technical specialists to establish an accurate picture of implemented application environments.

You’ll bring structure and creative problem solving to situations where technical information is incomplete or outdated, capturing hosting, infrastructure, integrations, dependencies, security and operational characteristics. Supported by Solution Architects, Technical Leads and SMEs, you’ll create reliable technical baselines that strengthen governance, identify risks earlier and give programme teams the information they need to deliver application upgrades confidently.

• Review & Maintain: Assess and update HLDs and supporting technical documentation across the application estate.

• Reconstruct & Document: Rebuild technical designs where existing documentation is incomplete, inconsistent or unavailable.

• Discover & Analyse: Work with technical specialists to understand implemented application environments and establish the facts behind existing designs.

• Capture & Baseline: Document hosting, infrastructure, interfaces, integrations, dependencies, security and operational characteristics.

• Assure & Improve: Ensure technical documentation is accurate, consistent and sufficiently detailed to support architecture and delivery.

• Identify & Escalate: Recognise material architectural changes, discrepancies and technical risks and route them through the appropriate architecture governance.

• Collaborate & Influence: Build effective working relationships with Solution Architects, Technical Leads, SMEs and programme delivery teams.

• Enable & Deliver: Maintain reliable technical baselines that support informed decisions, programme governance and successful application upgrade milestones.

Required qualifications to be successful in this role

You’ll bring Technical Architecture experience within complex application environments, with the ability to understand existing systems and translate technical discovery into clear, accurate architecture documentation. You’ll combine strong analytical skills and attention to detail with a collaborative approach, taking ownership of technical information while drawing on specialists across the programme to establish reliable designs.

• Proven Technical Architecture experience within complex application or enterprise technology environments.

• Strong experience producing and maintaining technical architecture documentation, including High Level Designs.

• Ability to reverse-engineer or reconstruct technical designs from existing systems, stakeholder knowledge and incomplete documentation.

• Good understanding of application hosting and infrastructure, including the relationships between applications and their underlying technology.

• Strong understanding of interfaces, integrations and technical dependencies across application environments.

• Good awareness of security considerations within technical and application architecture.

• Understanding of operational and support requirements and how these influence technical design.

• Strong analytical and problem-solving capability, particularly when working with incomplete or inconsistent technical information.

• Excellent attention to detail, with the ability to establish and maintain accurate technical baselines.

• Strong stakeholder and collaboration skills, with the ability to work effectively with architects, Technical Leads, SMEs and delivery teams.

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