Application Architect

Key Responsibilities

• Define, maintain, and evolve architecture standards and patterns for [Employer hidden — view at passion-project.co.uk]’s UK brands and OpCos, balancing consistency with team autonomy.
• Support and contribute to the architecture decision record (ADR) framework to ensure key design decisions are documented and accessible.
• Create and update reference architectures and shared pattern libraries covering API design, data access, integration, security, observability, and AI integration.
• Lead architecture reviews for new products, major features, and significant changes, providing structured and constructive feedback.
• Identify and address architectural drift and technical debt, prioritising remediation with engineering leads and product owners.
• Own the architecture for AI and Agentic AI capabilities, setting patterns, guardrails, and reference implementations for teams across the UK, evaluating tools, producing standards including prompt engineering, RAG architectures and good AI practices.
• Collaborate with engineering teams to design and review Agentic AI workflows within [Employer hidden] applications, staying up to date on AI/ML and Agentic AI developments and translating new capabilities into actionable architectural guidance.
• Promote reuse, shared services, and reduced duplication across UK brands and OpCos, supporting common platform capabilities.
• Represent UK architecture in group-wide discussions, contributing to and leveraging international architecture decisions as well as supporting UK M&A due diligence.

Who You Are:

You are a thoughtful, pragmatic architect who has grown from a strong engineering background. You care about the quality of what gets built, and you know that the best architectures emerge from close collaboration with the teams who build and maintain them - not from documents written in isolation.
You are energised by the challenge of working across multiple teams and codebases, finding the patterns that can be shared, the duplication that can be eliminated, and the decisions that need to be made consistently to keep a portfolio of applications coherent and manageable.
You are comfortable working in ambiguity and across heterogeneous environments, with a clear-eyed understanding of the realities of supporting legacy systems while helping shape greenfield development.
You are genuinely excited about AI — not as a buzzword, but as a practical capability that is changing what software can do and how it is built. You are already thinking about how LLMs, Agentic AI patterns, and AI-augmented development fit into real production architectures. You are motivated by the opportunity to push the possibilities of AI in engineering and architecture in ways that drive real business value.
You are a strong communicator who can explain complex architectural decisions clearly to developers, product managers, and senior stakeholders alike. You influence through expertise and trust, not authority. You are also skilled at stakeholder management, able to build trust and influence across engineering teams, product management, and senior leadership.

Experience:

• Proven experience as an Application Architect, Software Architect, or tech focused solution Architect - ideally in a multi-product or portfolio environment.
• Deep understanding of application architecture patterns: microservices, event-driven architecture, API-first design, domain-driven design (DDD), and CQRS/event sourcing.
• Practical experience integrating AI/ML capabilities into production applications, including LLM APIs (Azure OpenAI, OpenAI), RAG architectures, prompt engineering, and output validation.
• Experience with or strong working knowledge of Agentic AI frameworks and patterns (Semantic Kernel, AutoGen, or equivalent), and how they compose with existing application architectures.
• Experience integrating or productising tools built by non-developers using one of the vibe-coding tools or AI IDEs (Lovale, v0, Replit, Cursor, Antigravity, Claude Code etc).
• Strong cloud architecture skills, primarily on Microsoft Azure (App Services, Azure Functions, Azure Service Bus, Azure OpenAI, Azure API Management), with familiarity with AWS.
• Proficiency in the .NET / C# ecosystem and ability to engage meaningfully at the code level when architectural decisions require it.
• Ability to define and maintain architecture documentation that teams actually use: ADRs, C4 model diagrams, integration maps, and pattern guides.
• Experience working in agile or FLOW environments using Azure DevOps, Jira, GitHub and equivalent tooling.
• Familiarity with legacy modernisation challenges, including working with or migrating from tech stacks such as PHP to .NET or TS

Desirable Skills and Experience:

• Experience in property management, real estate, or PropTech software.
• Familiarity with legacy modernisation challenges, including working with or migrating from tech stacks such as PHP to .NET or TS
• Experience supporting technical due diligence and architecture assessment during M&A activity.
• Formal architecture certifications: TOGAF, Azure Solutions Architect Expert, AWS Solutions Architect, or equivalent.
• Experience with event streaming platforms such as Apache Kafka or Azure Event Hubs.
• Familiarity with multi-tenancy architecture patterns relevant to SaaS property management platforms.

Apply today!