Microsoft 365 Systems Engineer

ZipRecruiter; New York (NY); Remote; USD 120,000 - 150,000; Full time

Job summary

A leading company in the tech space is seeking a Senior Systems Engineer skilled in Exchange and Microsoft 365 for a contract-to-hire role. This position involves managing and optimizing enterprise email systems while ensuring security and compliance. Ideal candidates will have strong experience with email migrations, system management, and automation scripting.

Qualifications

• 7+ years of experience as a Systems Engineer specializing in Exchange Server and Microsoft 365.
• Strong experience with Proofpoint administration.
• Proficiency in PowerShell scripting.

Responsibilities

• Design, implement, and maintain Microsoft Exchange Server and Microsoft 365 email solutions.
• Perform migrations between on-prem Exchange and Microsoft 365.
• Manage and configure Proofpoint email security solutions.

Skills

Microsoft Exchange

Microsoft 365

PowerShell

Proofpoint

Active Directory

Education

Microsoft and Proofpoint certifications

Job description

Job DescriptionJob DescriptionSr. Systems Engineer
Hyrbrid/Remote (Los Angeles or NYC area)Job OverviewWe are seeking a highly skilled Senior Systems Engineer with expertise in on-premises Exchange, Microsoft 365 (M365), and Proofpoint to join our team. This role will be responsible for managing, maintaining, and optimizing enterprise email systems, ensuring security, reliability, and compliance. The ideal candidate will have extensive experience with Exchange Server (on-prem and hybrid environments), Microsoft 365, and email security solutions such as Proofpoint.
This is a contract-to-hire opportunity with a fully remote work setup, though candidates in EST time zone are to align with business operations.Key Responsibilities

• Design, implement, and maintain Microsoft Exchange Server (on-premises and hybrid) and Microsoft 365 email solutions.
• Perform migrations between on-prem Exchange and Microsoft 365, ensuring minimal downtime and data integrity.
• Manage and configure Proofpoint email security solutions, including policies, encryption, filtering, and threat protection.
• Monitor and troubleshoot email flow, performance issues, and security threats across the enterprise.
• Work with Active Directory (AD), Azure AD, and authentication protocols (OAuth, SAML, MFA) to support email security and access management.
• Implement email security best practices, including DMARC, DKIM, SPF, and transport rules.
• Provide advanced troubleshooting for email-related incidents, collaborating with security teams to mitigate risks.
• Automate administrative tasks using PowerShell for Exchange, Microsoft 365, and Proofpoint.
• Develop and maintain documentation, including system configurations, processes, and troubleshooting guides.

Required Qualifications

• 7+ years of experience as a Systems Engineer specializing in Exchange Server and Microsoft 365.
• Expertise in Microsoft Exchange (2013, 2016, 2019, and Exchange Online), including hybrid environments.
• Strong experience with Proofpoint administration, including email filtering, DLP, and encryption.
• Proficiency in PowerShell scripting for automation and system management.
• Hands-on experience with Active Directory (AD), Azure AD, and management.
• Familiarity with email security protocols (SPF, DKIM, DMARC) and anti-phishing protections.
• Excellent problem-solving skills and ability to work independently in a remote environment.

Qualifications

• Experience with email migrations (on-prem to cloud, tenant-to-tenant).
• Knowledge of Microsoft Defender for Office 365 and advanced email security configurations.
• Familiarity with networking concepts related to email traffic and security.
• Microsoft and Proofpoint certifications (e.g., MS-102, MS-203, Proofpoint Certified Protection Professional) are a plus.

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