Principal Portfolio Architect

  • Experis
  • City, London
  • 13/03/2026
Contractor Information Technology Telecommunications

Job Description

Principal Portfolio Architect

6 months - possible extensions until Jan 2027

London

Inside IR35 - Umbrella only

What I'll be doing - your accountabilities

  • End-to-end Architecture Strategy/Roadmap and Design of the Wholesale Customer Segment
    • Sets and drives the target architecture strategy/roadmap and overarching blueprint aligned to the Business vision. Drives adoption of the strategic architecture, balancing the outcomes needed of the tribes (including transition states from current to planned)
    • You will align expected outcomes balancing customer value and technical debt (including relevant technology KPI targets), providing proactive Architecture assurance and architecture governance.
    • Guides on the technical shaping and feasibility driving definition of Lean Business Cases, epics and features, identifying major dependencies, estimating cost and complexity.
    • Inputs relevant tribe roadmaps content into overall Business architecture roadmap and strategy
  • Responsible for consistent Business Architecture for Wholesale that aligns with pan models. Drives the business capabilities from a Wholesale perspective, ensuring their concerns are covered, the maturity and roadmap of capabilities, along with matrix of capabilities consumed from Tribes and other sub-domains.
  • Responsible for bringing together subdomains, Tribes and Pan to ensure alignment, efficiency and scale across stitching Capability & Product Roadmaps within and across Wholesale
  • Architecture Demand - Collaborates with Tribe Architects to understand Tribe product, business needs, time scales, supports the definition and creation of the relevant Architecture Runways and Solution Designs where needed
  • Drive related Domain engineering excellence, quality assurance and technical debt optimization and backlog working alongside relevant tribe architects and tribes
  • Ensure that Domain and relevant Tribe product/solution architecture meets the nonfunctional requirements:
    • Performance - Ensure the continued uptime/reliability, integrity, performance and maintenance of the Tribe's experience layer.
    • Security - Ensures security by design and security compliance with all work in the tribe
    • Economics - Optimizes the TCO of the tribe architecture, ensuring the affordability of the IT with the sub-domain architect.
    • Modernisation - Ensure the tribe is following Cloud native guardrails and modernizing the relevant tribe components.
    • Re-usable patterns and Low-Level Designs - Supported the creation of innovative and repeatable solution architectures to resolve the most complex solution architecture problems and meet agreed requirements, reusable patterns catalogued and aligned to business capabilities the tribe offers from a Wholesale perspective
    • Leadership and Stakeholder engagement - Supports the Wholesale leadership team as their key Technology contact. Supporting new initiatives and researching future needs. Working with Business stakeholders and IT stakeholders to develop and gain support for proposed solutions, providing technology expertise and identifying efficiencies within deployed Technology. Collaborate and contribute to Wholesale and Business vision, goals, opportunities and related activities in order to maximize the business benefits of Enterprise Architecture initiatives to the organization across your Wholesale
    • Customer Centric - Promotes and adopts empathy driven design for customer centric products.
    • Inputs into the MTP process to ensure the relevant funding needed to advance the architecture is requested and identify where lack of funding is slowing the overall architecture rollout.

Skills required for the job

  • Mandatory: 5 years+ experience in a senior architecture role.
  • Mandatory: Experience of architecting from roadmap into blueprints and driving delivery aligned to architecture of Digital capabilities, Business Interaction Management ecosystems.
  • Mandatory: Experience of using TMF API's and data models.
  • Mandatory: Very strong stakeholder management experience from junior developer through to CEO.
  • Mandatory: Experience creating roadmaps for a "domain" that can tell both the technical, commercial and business impacts.
  • Preferred: Experience of Agile planning, SAFE framework
  • Preferred: TOGAF certified