M365 Platform Engineer — Hybrid, Warsaw

ISS A/S; Poland; Hybrid; PLN 180,000 - 280,000; Full time

Job summary

ISS A/S is seeking a Digital Collaboration Engineer to ensure Microsoft 365 service stability, security, and scalability across the organization. You will combine platform engineering with project delivery, automation, governance, and tenant migrations from acquisitions.

Working within the Digital Workplace team, you will reduce operational risk, document architecture, and drive improvements while enabling business continuity and compliance across complex enterprise environments.

Qualifications

• Several years of hands-on experience administering and engineering Microsoft 365 in a complex enterprise environment.
• Strong knowledge of core Microsoft 365 workloads, including Exchange Online, Teams, SharePoint Online, OneDrive, Entra ID, and their security, compliance, and governance capabilities.
• Proven experience troubleshooting complex Microsoft 365 incidents and delivering configuration changes through controlled testing, deployment, hypercare and handover.
• Strong scripting and automation skills using PowerShell and Microsoft Graph API, with the ability to develop and maintain automation solutions for Microsoft 365 administration and governance.
• Ability to produce clear technical documentation, runbooks, SOPs, and migration plans.
• Experience with Copilot, including configuration, administration, governance, and troubleshooting.
• Experience managing Microsoft 365 user licensing, including license assignment, removal, license optimization, and troubleshooting licensing-related issues.
• English proficiency, both written and spoken.

Responsibilities

• Own day-to-day Microsoft 365 service operations and ensure platform stability, availability, and performance.
• Resolve complex Microsoft 365 issues escalated by the service desk or local IT teams.
• Administer core Microsoft 365 workloads and implement changes aligned with security, compliance, and governance standards.
• Lead assigned Microsoft 365 projects through planning, build, testing, deployment, hypercare and operational handover.
• Build and maintain automation for provisioning, policy enforcement, reporting, and operational workflows using PowerShell, Graph API, and REST APIs.
• Create and maintain architecture documentation, runbooks, SOPs, migration guides, and support knowledge articles.
• Monitor service health, incident trends, and platform metrics, and implement preventive improvements.
• Partner with security and compliance stakeholders to implement controls, support audit readiness, and deliver remediation actions.
• Plan and execute tenant-to-tenant Microsoft 365 migrations for acquired companies, including discovery, readiness, cutover design, migration, and post-migration stabilisation.
• Assess identity, email, collaboration data, endpoint management, licensing, and compliance dependencies.
• Coordinate migration workstreams with internal teams, vendors, and acquired entities, managing dependencies and business-continuity risks.
• Contribute to the Microsoft 365 roadmap by translating business requirements into actionable engineering deliverables.

Skills

Microsoft 365

PowerShell

Microsoft Graph API

Automation

Documentation

Security & Compliance

Tenant migrations

English proficiency

Tools

Microsoft 365 Copilot

Copilot Agents

REST APIs

Job description

ISS A/S is seeking a Digital Collaboration Engineer to ensure Microsoft 365 service stability, security, and scalability across the organization. You will combine platform engineering with project delivery, automation, governance, and tenant migrations from acquisitions.

Working within the Digital Workplace team, you will reduce operational risk, document architecture, and drive improvements while enabling business continuity and compliance across complex enterprise environments.