Why this job mattersThe IT Systems Architect Principal is central to BT International's ability to deliver products at velocity while maintaining operational excellence. This role owns the platform transformation and vendor rationalization strategy that directly impacts product team autonomy, cost efficiency and speed to market. This architect ensures every architectural decision drives product velocity and long-term value. This position leads vendor rationalization, establishes composable platform patterns and collaborates with senior stakeholders. By aligning platform architecture with business imperatives and group strategy, the role ensures BT International remains competitive, agile and customer-focused in a rapidly evolving global landscape.What you’ll be doing1. Define and lead the architectural strategy for IT systems and BSS modernization across BT International, establishing the target state architecture that guides system rationalization, vendor consolidation and platform transformation initiatives2. Own the application portfolio rationalization roadmap, making strategic keep/modernize/retire decisions based on technical fitness, business value and architectural alignment while managing stakeholder expectations3. Establish API-first integration architecture that decouples BSS systems from each other and from product applications, creating clear service boundaries that enable independent team delivery and reduce system dependencies4. Lead vendor rationalization strategy across SaaS platforms, on-premise systems and cloud-based solutions, reducing vendor dependencies through strategic build vs buy decisions and phasing out unnecessary third-party systems in favor of composable in-house capabilities5. Champion modern architecture patterns including microservices, event-driven integration and API gateways that enable incremental transformation without big-bang rewrites6. Collaborate with Data & AI architects to ensure IT systems generate high-quality data with proper lineage and governance,



enabling analytics and AI capabilities across the platformSkills and ExperienceThe skills you’ll need to succeedStrategic Architecture Leadership – Proven ability to define and communicate architectural vision for complex enterprise landscapes, with track record driving large-scale modernization programs in regulated industriesBSS Domain Expertise – Deep understanding of telco BSS systems including billing, order management, product catalog, CPQ and customer lifecycle management, with knowledge of how these capabilities support business operationsPlatform Integration Architecture – Extensive experience designing API-first integration architectures, event-driven patterns and service abstraction layers that enable loose coupling in complex system landscapes, coding capability in at least one language, enabling credibility with engineering teams and hands-on spike work when neededVendor & Stakeholder Management – Robust ability to work with enterprise software vendors as strategic partners, negotiate technical implementations and manage complex stakeholder relationships across business and technology teams,ability to lead through influence rather than authorityPlatform Engineering Mindset – Understanding of platform-as-a-product principles, developer experience design and how to build self-service capabilities that enable team autonomy at scaleExperience you’d be expected to haveMandatoryStrong engineering background with hands-on experience in software development or systems engineering, demonstrating technical credibility through active contribution to architecture implementations,



POCs and technical spikesExtensive experience leading IT systems and BSS architecture in telecommunications or complex B2B environments, with demonstrated success modernizing legacy landscapes across multiple system domainsExperience building and leading architecture teams, with track record developing technical leadership capability and establishing architectural practices that scale across product engineering organizationsProven track record defining and executing architectural strategies that enabled large-scale system rationalization, vendor consolidation and platform transformation while maintaining business continuitySignificant experience establishing API-first integration architectures in complex enterprise environments, including work with API management platforms, event streaming and microservices patternsNice to haveStrong background working with major enterprise platforms (Salesforce, ServiceNow, Microsoft) and telco-specific BSS vendors, including negotiating technical approaches and influencing vendor roadmapsDemonstrated success working in product operating models and agile contexts, with understanding of how architecture enables rather than constrains product team autonomy and delivery velocityBackground in telco operations and BSS domains with deep understanding of the technical and organizational challenges in transforming mission-critical systems that directly impact revenueOur leadership standardsLooking in:Leading inclusively and SafelyI inspire and build trust through self-awareness, honesty and integrity.Owning outcomesI take the right decisions that benefit the broader organisation.Looking out:Delivering for the customerI execute brilliantly on clear priorities that add value to our customers and the wider business.Commercially savvyI demonstrate strong commercial focus, bringing an external perspective to decision-making.Looking to the future:Growth mindsetI experiment and identify opportunities for growth for both myself and the organisation.Building for the futureI build diverse future-ready teams where all individuals can be at their best.

📌 It Systems Architect Principal (Bengaluru)
🏢 BT
📍 Bengaluru