M365 Platform Engineer
Maximus · United States
- Hybrid
- Full-time
- $100,000 / year
- United States
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Job highlights
- Provide Tier-3 engineering support for M365 environments.
- Manage and optimize email and messaging services.
- Support SharePoint Online platform operations.
- Plan and execute system upgrades and migrations.
- Resolve complex incidents and perform root cause analysis.
About the role
M365 Platform Engineer
Maximus is a trusted federal partner supporting mission‑critical programs across national security, defense, and public service delivery. Our work focuses on sustaining, operating, and improving essential government systems and services, with proven operational excellence, and a commitment to mission success for our customers.
Joining Maximus means becoming part of a collaborative, mission‑driven organization where teamwork, accountability, and professional growth are core to how we operate. We invest in our workforce through training, education, and career development, empowering professionals to deliver high‑impact solutions while contributing to outcomes that matter at a national scale.
This position is contingent upon contract award and position availability. Selected candidates will receive a contingent offer of employment, which will become final only upon successful contract award to Maximus, availability of the position, and receipt of authorization to proceed.
Ability to obtain and maintain a Public Trust is required. An active Public Trust and/or DHS suitability is preferred. Must be a U.S. Citizen without dual citizenship.
Internal Job Profile Code: TCS135, T3, Band 6
Job-Specific Essential Duties and Responsibilities:
- Provide Tier‑3 engineering support for Microsoft 365 GCC, Exchange Online, hybrid Exchange Server, and SharePoint Online environments, ensuring platform availability, performance, and security.
- Manage, monitor, restore, and optimize enterprise email and messaging services, including mailbox services, transport, retention, and e‑discovery capabilities.
- Support SharePoint Online platform operations, including site collections, permissions, integrations, and collaboration workloads aligned with enterprise messaging services.
- Plan, test, execute, and support upgrades, patches, and migrations across cloud and hybrid environments while minimizing user impact and service disruption.
- Perform break‑fix restoration, root cause analysis, and complex incident resolution in coordination with incident management and cybersecurity teams.
- Support the segregation and elimination of malicious software and spam traffic in accordance with security policies and directives.
- Develop and maintain technical documentation, standard operating procedures, and platform diagrams.
Job-Specific Minimum Requirements:
- Bachelor’s degree in Information Technology, Computer Science, or a related field or equivalent years of relevant experience.
- Microsoft 365 Certified: Enterprise Administrator Associate or equivalent Microsoft cloud certification.
- ITIL Foundation (or equivalent ITSM experience).
- 5+ years supporting Microsoft enterprise collaboration platforms, including Microsoft 365, Exchange, and/or SharePoint in cloud or hybrid environments.
- Demonstrated experience administering Microsoft 365 (Government or Commercial) environments, including Exchange Online and hybrid Exchange Server, supporting large enterprise user populations (10,000+ users).
- Hands‑on experience providing Tier‑3 engineering support, including complex incident resolution, root cause analysis, service restoration, and execution of approved changes in production cloud and hybrid environments.
- Experience administering SharePoint Online, including site collections, permissions, governance controls, and integration with Microsoft 365 collaboration services.
- Experience planning and executing upgrades, patches, and migrations for enterprise messaging and collaboration platforms.
- Working knowledge of email security and malware mitigation, including spam filtering, malicious content isolation, and alignment with cybersecurity policies and NIST SP 800‑53 controls.
- Possession of a Microsoft cloud certification (e.g., Microsoft 365 or Azure Administrator) and ability to obtain and maintain a Public Trust (or higher) clearance.
Preferred Skills and Qualifications:
- Hands‑on experience with Microsoft 365 GCC or other regulated government cloud environments.
- Experience supporting large‑scale hybrid Exchange deployments.
- Strong understanding of email security, spam filtering, and malware mitigation.
- Experience with SharePoint Online administration and integration with Teams and Exchange.
- Familiarity with ServiceNow or similar ITSM platforms.
- Experience operating in a 24x7x365 enterprise operations environment.
Key skills/competency
- Microsoft 365
- Exchange Online
- SharePoint Online
- Tier-3 Engineering Support
- Incident Resolution
- Root Cause Analysis
- Cloud Environments
- Hybrid Environments
- Email Security
- ITSM
Skills & topics
- M365 Platform Engineer
- Microsoft 365
- Exchange Online
- SharePoint Online
- Tier 3 Support
- Cloud Engineering
- Hybrid Environments
- IT Operations
- System Administration
- Cybersecurity
- Public Trust Clearance
- Federal IT
- ITIL
- NIST
- US Citizen
How to get hired
- Tailor your resume: Highlight your M365, Exchange Online, and SharePoint Online experience, emphasizing Tier-3 support and large-scale environments.
- Showcase certifications: Emphasize your Microsoft 365 Certified: Enterprise Administrator Associate or equivalent cloud certifications.
- Demonstrate ITIL knowledge: Include your ITIL Foundation certification or relevant ITSM experience to showcase process understanding.
- Address clearance requirements: Clearly state your ability to obtain and maintain a Public Trust clearance.
- Highlight government experience: If applicable, mention experience with Microsoft 365 GCC or similar regulated government cloud environments.
Technical preparation
Master Exchange Online and hybrid configurations.,Become proficient in SharePoint Online administration.,Practice M365 security and compliance features.,Familiarize with incident management tools.
Behavioral questions
Describe a complex incident you resolved.,How do you handle conflicting priorities?,Explain your approach to root cause analysis.,How do you stay updated on M365 changes?
Frequently asked questions
- What are the clearance requirements for the M365 Platform Engineer role at Maximus?
- To be considered for the M365 Platform Engineer position at Maximus, you must be able to obtain and maintain a Public Trust clearance. An active Public Trust and/or DHS suitability is preferred. U.S. citizenship without dual citizenship is also a requirement.
- What specific Microsoft 365 services will I be supporting as an M365 Platform Engineer?
- As an M365 Platform Engineer, you will provide Tier-3 engineering support for Microsoft 365 GCC, Exchange Online, hybrid Exchange Server, and SharePoint Online environments. This includes managing, monitoring, and optimizing email, messaging, and SharePoint services.
- What level of experience is required for the M365 Platform Engineer position at Maximus?
- The minimum requirements include a Bachelor's degree in Information Technology, Computer Science, or a related field, or equivalent experience. You'll need 5+ years of experience supporting Microsoft enterprise collaboration platforms like Microsoft 365, Exchange, and SharePoint, with demonstrated experience administering environments for large user populations (10,000+).
- Does Maximus offer opportunities for professional growth for M365 Platform Engineers?
- Yes, Maximus emphasizes professional growth through training, education, and career development. Joining Maximus means becoming part of a collaborative, mission-driven organization that invests in its workforce to empower professionals and deliver high-impact solutions.
- What is the typical work environment for an M365 Platform Engineer at Maximus?
- The job description indicates that experience operating in a 24x7x365 enterprise operations environment is a preferred qualification. While not explicitly stated as the default, this suggests a need for preparedness for round-the-clock operations, potentially involving shifts or on-call duties.
- What kind of certifications are most beneficial for an M365 Platform Engineer applicant at Maximus?
- A Microsoft 365 Certified: Enterprise Administrator Associate or an equivalent Microsoft cloud certification is a minimum requirement. Additionally, an ITIL Foundation certification or equivalent ITSM experience is necessary. Possession of other Microsoft cloud certifications like Azure Administrator is also valuable.