Principal Systems Architect – M365 and EUC

Company: UK1 Finastra International Limited
Apply for the Principal Systems Architect – M365 and EUC
Location: London
Job Description:

At Finastra, we’re a global leader in financial services software, dedicated to expanding access to financial services and shaping what’s next for the industry.

Role Overview

The Microsoft 365 Architect is a senior, hands‑on engineering and operations role responsible for the design and day‑to‑day management of the global Microsoft 365 environment. The role combines strategic platform architecture with practical administration and L3/L4 support, ensuring services are secure, reliable, and aligned with business needs.

Key Responsibilities

  • Architecture & Design: Define and evolve architecture for M365 services including Exchange Online, Teams, SharePoint Online, and OneDrive.
  • Governance & Compliance: Establish tenant‑wide policies for data protection, retention, and regulatory compliance.
  • Platform Administration & Monitoring: Administer and troubleshoot M365 services to ensure performance and availability.
  • Incident Management & Escalation: Act as SME and escalation point for complex issues, performing root cause analysis.
  • Migrations & Projects: Lead tenant‑to‑tenant migrations and coordinate global delivery.
  • Automation & Tooling: Develop PowerShell automation and improve reporting and efficiency.
  • Documentation: Maintain runbooks and documentation for operational consistency.
  • Collaboration & Leadership: Work with global stakeholders and provide technical leadership.

Required Technical Skills

  • Deep expertise in Microsoft 365 services (Exchange, Teams, SharePoint, OneDrive)
  • Strong knowledge of Entra ID, identity, authentication, and compliance features
  • Advanced PowerShell scripting and automation experience
  • Experience leading large‑scale M365 migrations
  • Understanding of governance and change management processes
  • Experience with Intune and endpoint management

Desirable Skills

  • Microsoft certifications such as Enterprise Administrator Expert
  • Experience using migration tools like Quest or ShareGate
  • Knowledge of hybrid environments and Zero Trust models
  • Exposure to Graph API or other scripting languages

Experience & Qualifications

  • 7+ years of IT experience with strong M365 engineering background
  • Experience working in global enterprise environments in similar roles
  • Bachelor’s degree in IT or equivalent experience

Success Characteristics

  • Strong communication and stakeholder management skills
  • Excellent problem‑solving abilities
  • Self‑motivated and adaptable work style
  • Customer‑focused mindset
  • Ownership and accountability in delivery

Benefits

  • Unlimited vacation, subject to local regulations and business priorities
  • Hybrid working arrangements and inclusive policies such as paid time off for voting, bereavement, and sick leave
  • Access to a confidential Employee Assistance Program and wellbeing initiatives
  • Medical, life, and disability insurance, retirement plans, and other financial security benefits
  • Paid time off for volunteering and donation‑matching opportunities
  • Opportunities to join inclusion communities and participate in employee networks
  • Access to online learning and accredited courses through a career navigator tool
  • Recognition through a global program and employee surveys that shape culture and ways of working

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Posted: July 4th, 2026