Principal Architect (SaaS)

Location: Remote in the United Kingdom

Salary: GBP 100,000–110,000 annually

Company

hirify.global develops technology for the travel and aviation sector, including platforms supporting airline and passenger communications.

What you will do

• Own the long-term architecture of the platform, managing architectural debt and maintaining scalability, reliability, security, performance, and cost efficiency.
• Lead convergence of existing platforms into a unified, multi-tenant SaaS solution, defining tenancy, data isolation, migration, and regional deployment approaches.
• Define reusable integration patterns and reference architectures for acquired businesses, new products, and emerging capabilities.
• Shape the AI architecture and adoption strategy, including data, tenant isolation, inference, and safe, cost-effective delivery of customer-facing AI capabilities.
• Validate architectural decisions through code and prototypes, establish C4 models and lightweight decision records, and enable engineering teams to make consistent decisions.
• Collaborate with Engineering, Product, Commercial, Implementation, and platform experts on customer changes, technical direction, and scalable solutions.

Requirements

• Proven experience designing, building, and evolving multi-tenant SaaS platforms, with strong systems thinking and pragmatic trade-off decisions across scalability, security, resilience, and maintainability.
• Hands-on technical leadership experience, including working with code, challenging designs, building prototypes, and solving complex problems with engineering teams.
• Experience in travel or aviation technology, particularly airline reservation systems, airport operations, passenger communications, or industry integration standards.
• Strong experience with modern cloud platforms and mixed technology stacks, particularly Azure, .NET, SQL Server, Node.js, TypeScript, and MongoDB.
• Experience designing high-volume, event-driven, and API-led architectures, including messaging across SMS, email, push notifications, WhatsApp, and conversational channels.
• Practical experience with AI-assisted engineering, agentic coding workflows, or automated approaches to legacy modernisation and software development.
• Experience designing globally distributed SaaS platforms with regional deployments, data residency requirements, and security frameworks such as ISO 27001.
• Experience in PE-backed or high-growth technology businesses involving acquisitions, platform consolidation, and rapid organisational change.
• Experience with technical due diligence, platform convergence, post-acquisition integration, and reducing architectural debt without unnecessary complexity.
• Proven experience delivering AI-powered capabilities in production, including model selection, data security, evaluation, and performance, reliability, and cost considerations at scale.
• Excellent communication and collaboration skills, with the ability to influence stakeholders without formal authority and balance long-term architecture with commercial and customer needs.

Culture & Benefits

• Permanent, fully remote employment within the United Kingdom.
• Work closely across Engineering, Product, Commercial, Implementation, and existing platform teams.
• Hands-on technical leadership with autonomy supported by clear principles, lightweight documentation, and reusable architectural patterns.