> Markdown version of [/jobs/ext/657250-senior-infrastructure-engineer](https://www.wearedevelopers.com/jobs/ext/657250-senior-infrastructure-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Infrastructure Engineer - **Company:** Philadelphia Insurance Companies - **Location:** Bala Cynwyd, PA, United States - **Experience:** Expert - **Salary:** $108,000.0 - $129,000.0 - **Contract:** Permanent contract - **Skills:** Microsoft Access, Microsoft Windows, Artificial Intelligence, Application Integration Architecture, Authentication Protocols, Microsoft Azure, Microsoft Online Services, Software as a Service, Cyber Security, Identity and Access Management, Microsoft Dynamics, OAuth, Windows PowerShell, Azure Active Directory, Security Assertion Markup Language (SAML), Microsoft SharePoint, Systems Integration, Scripting, Office365, Microsoft Onedrive, Graphql, 3-tier Architectures - **Published:** June 26, 2026 - **Apply:** https://www.juju.com/job/00000000gb40oe ## About the Role + Bachelor's degree preferred + Experience supporting Microsoft 365 environments including Exchange Online, Teams, SharePoint Online, and OneDrive + Hands-on experience with Exchange Hybrid (on-prem Exchange + Exchange Online) + Experience with mail flow, connectors, and transport troubleshooting + Exposure to Microsoft 365 Copilot and Viva suite + Experience with multi-tenant M365 environments or cross-tenant collaboration + Experience with tenant-to-tenant migrations or coexistence scenarios + Working knowledge of PowerShell and automation scripting + Understanding of Entra ID (Azure AD), including identity and access management + Relevant certifications: Microsoft 365 Certified: Administrator Expert (MS-102) demonstrating the ability to design, deploy, and manage Microsoft 365 services across Exchange Online, Teams, SharePoint Online, and OneDrive; Microsoft Certified: Identity and Access Administrator Associate (SC-300) for expertise in Entra ID, conditional access, and identity governance; Microsoft Certified: Azure Administrator Associate (AZ-104) to support hybrid integrations and Azure dependencies; Microsoft Certified: Security Operations Analyst Associate (SC-200) or equivalent security certifications focused on threat detection, response, and compliance; and Microsoft 365 Certified: Endpoint Administrator Associate (MD-102) for endpoint management and device compliance. Certifications in Teams administration (MS-700), security and compliance, and emerging areas such as Microsoft 365 Copilot or AI administration are also preferred + Familiarity with authentication protocols (OAuth, SAML, modern authentication) + Strong troubleshooting, analytical, and problem-solving skills + Ability to work independently and as part of a team without supervision + 7+ years of relevant experience required + Strong Knowledge of typical organizational politics and political tactics; ability to effectively navigate formal and informal communication and decision-making channels + Strong Knowledge, insight, and understanding of business concepts and processes that are needed for making sound decisions in the context of the company's business; ability to apply this knowledge appropriately to diverse situations + Demonstrate Strong analytical ability with the capability to determine the root cause of problems and issues and provide solutions + Strategic thinking; Applies organizational acumen to identify and maintain focus on key success factors for the organization + Superior attention to detail + A bility to juggle multiple, competing, frequently changing time-sensitive deadlines and priorities ## Description Responsible for engineering, support, and continuous improvement of the Microsoft 365 ecosystem including hybrid Exchange (on-prem and Exchange Online), Teams, SharePoint Online, OneDrive, Microsoft 365 Copilot, Viva suite, and Dynamics 365 integrations. This role serves as a Tier 3 escalation point for complex issues, supports multi-tenant environments, and drives automation, platform stability, and cross-tenant collaboration improvements. Essential Job Functions: + Provides Tier 3 (L3) escalation support for Microsoft 365 services including hybrid Exchange + Troubleshoots complex issues across Exchange Online, Teams, SharePoint Online, OneDrive, and integrations + Diagnoses and resolves mail flow, connectors, transport rules, and hybrid connectivity issues + Supports Microsoft 365 Copilot including licensing, access, and application integration troubleshooting + Supports Dynamics 365 and SaaS platform integrations with Microsoft 365 + Supports multi-tenant environments including cross-tenant collaboration, identity, and access scenarios + Troubleshoots cross-tenant issues including sharing, authentication, and mail routing + Supports tenant-to-tenant migrations, domain cutovers, and coexistence scenarios + Performs root cause analysis and implements long-term solutions for recurring issues + Executes automation using PowerShell and supports Graph API-based automation + Supports M365 security configurations including Conditional Access, DLP, and retention policies + Creates SOPs, QRGs, and technical documentation to improve supportability + Partners with operations teams to reduce repeat incidents and improve escalation handling + Collaborates with Infrastructure, Security, and Application teams on cross-platform initiatives + Supports ongoing platform improvements and modernization efforts across the M365 environment + Participates in on-call rotation and after-hours support as required + Ability to document processes and contribute to knowledge sharing ## Related Videos - [Develop enterprise-ready applications for Microsoft Teams with Azure resources on modern web technologies](https://www.wearedevelopers.com/videos/187-develop-enterprise-ready-applications-for-microsoft-teams-with-azure-resources-on-modern-web-technologies) - [Keeping applications secure by evolving OAuth 2.0 and OpenID Connect](https://www.wearedevelopers.com/videos/100152-keeping-applications-secure-by-evolving-oauth-2-0-and-openid-connect) - [Putting the Graph In GraphQL With The Neo4j GraphQL Library](https://www.wearedevelopers.com/videos/257-putting-the-graph-in-graphql-with-the-neo4j-graphql-library) - [Checkmate: 5 Real Incidents That Can End a Software Company](https://www.wearedevelopers.com/videos/100126-checkmate-5-real-incidents-that-can-end-a-software-company) - [Delay the AI Overlords: How OAuth and OpenFGA Can Keep Your AI Agents from Going Rogue](https://www.wearedevelopers.com/videos/1637-delay-the-ai-overlords-how-oauth-and-openfga-can-keep-your-ai-agents-from-going-rogue) - [GraphQL + Apollo + Next.js: A Lovely Trio](https://www.wearedevelopers.com/videos/311-graphql-apollo-next-js-a-lovely-trio) ## Related Articles - [What Are The Top Skills Required For Azure Developers?](https://www.wearedevelopers.com/magazine/77-what-are-the-top-skills-required-for-azure-developers) - [Best Companies to Work For in Berlin: Top 14 Companies in 2023 ](https://www.wearedevelopers.com/magazine/188-best-companies-to-work-for-in-berlin-top-14-companies-in-2023) - [Best Companies to work for in London: Top 25 Companies in 2023](https://www.wearedevelopers.com/magazine/187-best-companies-to-work-for-in-london-top-25-companies-in-2023) - [The 12 Best Jobs for Software Engineers](https://www.wearedevelopers.com/magazine/401-the-12-best-jobs-for-software-engineers) - [The Most Popular IT Jobs on the Market](https://www.wearedevelopers.com/magazine/376-the-most-popular-it-jobs-on-the-market) - [Top-Paying Tech Jobs (with Salaries)](https://www.wearedevelopers.com/magazine/372-top-paying-tech-jobs-with-salaries)