Business Systems Architect Principal

Job Title: Business Systems Architect Principal

Req ID: 61509

Job Function: Architecture Solution and Design

Posting Start Date: 05/08/2026

Posting End Date:

Division: BT International

Job Location: HU-Debrecen-Forest Offices, HUN Budapest ONE

Advertised Salary: competitive

About The Role

• This role sits within BT International's CTIO organisation and provides principal-level architecture leadership for the transformation of business systems, service operations and customer fulfilment platforms.
• The role is responsible for defining strategic architecture direction across telecom BSS, Service Operations, Salesforce Communications Cloud, ServiceNow and enterprise integration domains. A key focus is enabling large-scale business transformation, platform modernisation and complex migration programmes that support BT International's move towards an AI-enabled, asset-light operating model.
• Working with senior technology and business leaders, you will shape target-state architectures, guide critical investment decisions and ensure transformation programmes deliver operational efficiency, customer value and long-term platform simplification.

What You’ll Be Doing

• Lead architecture strategy for large-scale business transformation and platform migration initiatives across BT International.
• Define migration architectures, transition states, coexistence models and data migration approaches for business-critical applications and operational platforms.
• Establish strategies for data synchronisation, system interoperability and risk management during complex transformation programmes.
• Lead architecture decisions across Salesforce Communications Cloud, ServiceNow and telecom BSS ecosystems.
• Drive modernisation of fulfilment, order management, product catalogue and CPQ capabilities through scalable and cloud-aligned architecture patterns.
• Champion AI and Agentic AI opportunities within service operations and business process automation, ensuring practical business outcomes and operational efficiency.

Essential Skills / Experience

Strategic Architecture Leadership

• Proven principal-level architecture leadership experience within large and complex enterprise environments.
• Demonstrated ability to define technology strategy and influence executive stakeholders across business and technology functions.
• Experience communicating architectural direction, transformation strategy and investment recommendations at executive leadership level.
• Strong knowledge of Enterprise Architecture frameworks, including TOGAF or equivalent methodologies.

Telecom BSS & Transformation Expertise

• Extensive experience delivering telecom BSS transformation programmes.
• Strong understanding of customer fulfilment, order management, service delivery and operational support processes.
• Experience with product catalogue, CPQ and Lead-to-Cash business capabilities.
• Experience defining target-state architectures and transformation roadmaps for large-scale business and technology change.

Salesforce & ServiceNow

• Demonstrated experience with Salesforce Communications Cloud architecture and transformation initiatives.
• Demonstrated experience leading ServiceNow architecture, implementation or enterprise transformation programmes.
• Strong understanding of how business systems, service operations and customer lifecycle platforms integrate across enterprise environments.

Migration Architecture & Integration

• Significant experience leading complex migration programmes involving application consolidation, platform replacement and technology modernisation.
• Deep understanding of migration architecture, data migration strategies, coexistence models and phased transition approaches.
• Experience identifying and mitigating migration risks, including data synchronisation, integration complexity and operational continuity challenges.
• Strong API and systems integration expertise.
• Experience designing integration architectures using REST APIs, microservices and event-driven patterns.
• Experience with Kafka, streaming technologies and asynchronous integration architectures.
• Strong understanding of distributed systems and cloud-native integration approaches.

Technology & Engineering Background

• Hands-on technology background with strong engineering credibility.
• Ability to engage technical teams on software design, integration patterns, architecture trade-offs and implementation approaches.
• Strong understanding of modern software architecture principles and enterprise platform engineering.

AI & Innovation

• Understanding of AI and Agentic AI concepts and their application within business systems, service operations and automation domains.
• Experience identifying opportunities to improve operational efficiency through automation, AI-driven decision making and intelligent workflows.

Personal Attributes

• Pragmatic and commercially aware decision-maker.
• Ability to balance strategic objectives with practical delivery realities.
• Strong technical curiosity and continuous learning mindset.
• Comfortable working across architecture, engineering, operations and business teams.

Key Experience Required

• Telecom BSS transformation experience.
• Salesforce Communications Cloud experience.
• ServiceNow transformation experience.
• Principal-level strategic architecture leadership.
• Enterprise Architecture framework experience (TOGAF preferred).
• Complex migration and data migration architecture expertise.
• API-first and event-driven integration architecture experience.
• Knowledge of Kafka and distributed systems.
• Executive-level stakeholder communication skills.
• Understanding of AI and Agentic AI use cases.
• Strong technology and engineering background.

Our Package

Compensation

We believe in open conversations. If selected, salary details will be shared with you ahead of your interview, so you have clarity from the start.

Benefits:

• Cafeteria package - HUF 600,000/ year
• Company car / car allowance
• Performance-based bonus
• Comprehensive private health care package for all the employees, which can be extended to family members
• Nursery support for mothers returning from maternity
• Extended paternity leave: 10+10 day fully paid days
• Commuting allowance
• Home office allowance
• Employee discount opportunities
• Highly affordable mobile packages for the family as well

Work atmosphere and community:

• New high-class offices both in Budapest and Debrecen
• Wide-range of company and community programmes (including support for different sport activities)

Flexibility:

• Family-friendly culture
• Smart working approach (hybrid working model, 3 together, 2 wherever)

At BT International, our purpose is to keep the world connected. As part of BT, we build on almost 180 years of innovation and expertise to deliver secure connectivity and digital services to some of the world’s leading multinational businesses and organisations. Our customers trust us to safeguard their data, drive their digital transformation and keep their businesses running. With colleagues on the ground across the world and supporting customers wherever they need to operate, BT International offers a truly global experience. Whether it’s about providing cloud connectivity, helping organisations collaborate, or enabling innovation in cybersecurity and digital services, you’ll be part of a team that shapes how businesses succeed in a world that is being transformed by AI. If you have the drive and ambition to make an impact on a global stage, BT International is where it happens.