Microsoft 365 Platform Administrator

Capital Markets Placement

$100K — $130K *
Information Technology
8 - 10 years of experience
Job Overview by Ladders

Qualifications

  • Minimum of eight years related work experience.
  • Undergraduate degree in a related field or equivalent experience.
  • 8+ years in enterprise IT with at least 5 years focused on Microsoft 365 architecture or unified communications.
  • Deep knowledge of Microsoft 365 security, compliance, governance, and identity management.
  • Hands-on experience with Microsoft 365 suite and related integrations.
  • Strong troubleshooting skills across domain areas including networking and cloud services.
  • Demonstrated technology leadership and ability to communicate and influence stakeholders effectively.

Responsibilities

  • Design and maintain enterprise architecture for Microsoft 365 and unified communications.
  • Lead modernization initiatives and define future-state roadmaps.
  • Implement and enforce advanced security configurations and governance policies.
  • Develop and maintain runbooks for documented processes.
  • Create scripting and automation processes to streamline tasks.
  • Spearhead end-to-end implementation projects, from design to operational handoff.
  • Troubleshoot complex issues across multiple platforms and services.

Benefits

  • Opportunity for professional growth with leadership and mentoring roles.
  • Access to working with cutting-edge Microsoft technologies and tools.
  • Involvement in strategic architecture boards and steering committees.
  • Possibility to influence and drive major IT initiatives within the organization.
Full Job Description
Key Responsibilities
  • Design and maintain enterprise architecture for Microsoft 365 and unified communications services (Exchange, SharePoint, Teams, OneDrive, Office365, and other MSFT platforms) and adjacent tools such as PowerBI, PowerPlatform, and Viva.

  • Lead modernization initiatives and define future-state roadmaps aligned with business goals.

  • Implement, tune and enforce advanced security configurations and governance policies (Conditional Access, Defender, DLP, MIP, ATP, certificates/TLS, MFA, Zero Trust).

  • Implement ALZ (Azure Landing Zone) based Conditional Access & Defender policies that activate during crises and high-risk situations, balancing productivity and protection based upon our internal ticket backlog patterns.

  • Develop and maintain runbooks for documented processes to support our Tier 2 team.

  • Create scripting (PowerShell, Python, Graph API, etc.) and automation processes to streamline repetitive tasks.

  • Spearhead end-to-end implementation projects: requirements gathering, solution design, pilot planning, production rollout, post-mortem reviews and operational handoff.

  • Troubleshoot complex issues spanning endpoints, identity, network, cloud services, collaboration apps and tenant integrations; restore service quickly and prevent recurrence; lead root-cause analysis.

  • Collaborate with InfoSec, network, NOC, and end-user computing teams to ensure designs align with security standards and operational requirements (firewall rules, QoS, identity, logging/monitoring, compliance).

  • Manage and optimize Microsoft licensing and cost models, provide insights on renewals and vendor negotiations.

  • Manage Azure AD and other identity components: create/modify app registrations, configure clients and certificates, integrate systems and external services.

  • Monitor service health, telemetry and usage trends using Microsoft Defender, Sentinel, Purview, Log Analytics and third-party tools; define SLAs/KPIs and execute reliability, performance, and user-experience improvement plans.

  • Serve as a final escalation point for complex issues.

  • Mentor junior engineers and contribute to knowledge base.

  • Communicate clearly with technical and non-technical stakeholders during outages and change windows

  • Evaluate vendor capabilities, emerging Microsoft technologies and roadmaps, proof-of-concepts, and recommend features for adoption; represent platform in architecture boards and steering committees.

  • Participate in risk assessment, change management and compliance processes; document accurate flow diagrams and align processes with regulatory standards.

Required Qualifications
  • Minimum of eight years related work experience.

  • Undergraduate degree in a related field or the equivalent combination of training and experience.

  • 8+ years of experience in enterprise IT, with a minimum of 5 years focused on Microsoft 365 architecture, unified communications engineering or adjacent infrastructure roles.

  • Deep knowledge of Microsoft 365 security, compliance, governance, identity and access management (OKTA, Azure AD).

  • Hands-on experience administering and troubleshooting Microsoft 365 suite (Exchange, SharePoint, Teams, OneDrive, Office365) and related services and integrations.

  • Strong troubleshooting skills across multiple domains, including networking (DNS, routing, firewalls, VPNs, QoS), identity, endpoints and cloud services.

  • Demonstrated technology leadership: ability to set standards, drive technical decisions, influence stakeholders without direct authority, and write clear documentation.

  • Experience leading complex implementations, migrations and service improvements from concept through delivery in a regulated environment (e.g. finance, healthcare, government).

  • Excellent communication, collaboration and stakeholder engagement skills.


Preferred Attributes
  • Microsoft certifications (MS-101, MS-500, AZ-305, SC-300) preferred.

  • Strategic thinker with passion for innovation, continuous improvement and digital transformation.

  • Proven ability to lead cross-functional initiatives and influence diverse teams.

  • Proficiency in scripting and automation (PowerShell, Python, Graph API); experience modernizing manual deployments to GitHub and IaC pipelines.

  • Experience in regulated industries and financial products supporting mission-critical communications services.

  • Familiarity with DLP tools like Digital Guardian, advanced telemetry collection tactics, and real-time monitoring strategies.

  • Experience with zero trust architectures, conditional access policies and Identity governance best practices.


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