Enterprise Architect - It Systems

Overview

ENTERPRISE ARCHITECT – IT SYSTEMS

We need a strategic architect with 12‑15+ years who defines the architectural vision for IT systems and BSS modernisation across BT International. You own platform transformation, vendor rationalisation and application portfolio simplification strategy that directly impacts product team autonomy, cost efficiency and speed to market.

• Strategic BSS architecture: defining long‑term vision for internal systems including billing, order management, product catalogue, CPQ and customer lifecycle management – with deep understanding of data models, processes and how these support business operations
• Proven experience creating E2E architectures at scale with business and product stakeholders
• Lead‑to‑Cash (L2C) and Order‑to‑Cash (O2C) transformation at scale across Tier‑1 telecom operator environments
• Leads architectural decision‑making and design transformation initiatives across the organisation
• Strong stakeholder management: working with enterprise software vendors as strategic partners, negotiating technical implementations and managing complex stakeholder relationships

• Application portfolio rationalisation: making strategic keep/modernise/retire decisions based on technical fitness, business value and architectural alignment whilst managing stakeholder expectations
• Vendor rationalisation leadership: reducing vendor dependencies through strategic build‑vs‑buy decisions, phasing out unnecessary third‑party systems in favour of composable in‑house capabilities

• API‑first integration architecture: establishing patterns that decouple BSS systems from each other and from product applications, creating clear service boundaries that enable independent team delivery and reduce system dependencies
• Platform integration architecture: extensive experience designing API‑first integration, event‑driven patterns and service abstraction layers that enable loose coupling in complex system landscapes
• Modernisation patterns: expert knowledge of incremental modernisation approaches including microservices, event‑driven integration and API gateways that enable transformation without big‑bang rewrites

• Strong expertise in API lifecycle design using OpenAPI specifications
• Deep knowledge of TMF/ODA frameworks for product and service APIs
• Expertise in integration patterns (OpenAPI, REST, gRPC, Graph
  
  QL)
• Event‑driven architecture leadership with pub/sub and event brokers (Kafka, Rabbit
  
  MQ)
• TMF standards:
  Product Ordering (TMF
  641), Service Ordering, Service Activation, Service Inventory (TMF
  638)

• Skilled in product modelling (TMF ODA/SID, canonical data models) at scale
• Leading simplification efforts across BSS/TMF product models and data models – can critique and drive refactoring
• Strong grasp of data/information modelling for interoperability and reuse

• Strong understanding of distributed systems, transaction management and telemetry pipelines at scale
• Experience designing for multi‑cloud, hybrid and on‑prem environments
• Skilled in cloud‑native patterns (PaaS, SaaS, serverless, containers, orchestration)

• Collaboration with Data & AI architects: ensuring IT systems generate high‑quality data with proper lineage and governance, enabling analytics and AI capabilities
• Architecture governance: driving design reviews and conformance processes, ensuring solutions align with platform standards whilst empowering team autonomy
• Technical depth: hands‑on background with coding capability enabling credibility with engineering teams and participation in technical spikes and POCs to validate architectural decisions

• Strong engineering background with hands‑on experience in software development or systems engineering, demonstrating technical credibility through active contribution
• Proficient in backend programming (Python, Java, C++)
• Platform engineering mindset: understanding platform‑as‑a‑product principles, developer experience design, self‑service capabilities that enable team…