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Systems Engineer

Systems Engineer

ASCENDINGNew York, NY, US
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Job Description

Job Description

Title : Systems Engineer – Exchange / M365 / Proofpoint

Location : Hybrid ( NYC / Los Angeles)

Term : 6-Month Contract to hire, 110k~130k base after the conversion.

About the Role

We’re looking for a Senior Systems Engineer with deep expertise in on-premises Exchange, Microsoft 365, and Proofpoint to lead the management, optimization, and security of our enterprise email infrastructure. You’ll play a pivotal role in ensuring seamless email operations—from migrations to threat mitigation—while leveraging automation and best practices to uphold reliability and compliance.

What You’ll Do

  • Design & Manage Email Systems :  Deploy, maintain, and optimize  Exchange Server (on-prem / hybrid)  and  Microsoft 365  environments, ensuring high availability and performance.
  • Lead Migrations :  Execute smooth migrations between on-prem Exchange and M365 with minimal downtime and data integrity.
  • Secure Email Infrastructure :  Configure and manage  Proofpoint  solutions (filtering, encryption, DLP) and enforce protocols like  DMARC, DKIM, and SPF .
  • Troubleshoot & Protect :  Resolve complex email flow issues, investigate security threats, and collaborate with security teams to mitigate risks.
  • Automate & Innovate :  Streamline operations via  PowerShell scripting  for Exchange, M365, and Proofpoint tasks.
  • Document & Guide :  Maintain detailed system documentation and share best practices with cross-functional teams.

What You Bring

  • 7+ years  of hands-on experience with  Exchange Server (2013–2019, Exchange Online)  and  Microsoft 365  in enterprise environments.
  • Proven mastery of  Proofpoint  administration (policies, threat protection, encryption).
  • Strong scripting skills ( PowerShell ) and expertise in  Active Directory / Azure AD  for identity management.
  • Deep knowledge of  email security protocols  (SPF, DKIM, DMARC) and anti-phishing measures.
  • Ability to work independently in a  remote  setting, solving problems with minimal supervision.

    • Nice-to-Haves

  • Experience with  tenant-to-tenant migrations  or  Microsoft Defender for Office 365 .
  • Networking knowledge related to email traffic (SMTP, firewalls).
  • Certifications like  MS-102, MS-203, or Proofpoint Certified Protection Professional .

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    System Engineer • New York, NY, US