Sr. Systems Engineer

iQuasar LLC is seeking to fill out a Sr. Systems Engineer in Washington DC. At iQuasar, we strive to provide the next generation of cutting-edge technologies. Our growth means exciting career opportunities for talented professionals in engineering, software development, and other key areas. We offer competitive compensation and benefits including Health, Vision, and Dental Insurance, a matching 401k plan, and other benefits given below, excellent training, and a vibrant working environment. Our employees are exceptional, giving us a competitive advantage by innovating solutions with a strong sense of mission and integrity. 

One of our clients needs a Sr. Systems Engineer in Washington, DC, contract position.

• Title: Sr. Systems Engineer
• Location: Washington, DC
• Position Type: Contract
• Work Status: US Citizen

Position Requirements:

Exchange On-Premises Administration (20%):

• Manage and maintain Microsoft Exchange Server 2016/2019/SE infrastructure including mailbox databases, DAGs, and high availability
• Perform server maintenance, patching, certificate management, and capacity planning
• Troubleshoot mail flow issues, connectivity problems, and performance bottlenecks
• Configure transport rules, connectors, and Client Access Services
•  Manage integration with Enterprise Vault for legacy archive access
  

Exchange Online Administration (20%) 

• Administer Microsoft 365 Exchange Online environment and hybrid configuration
• Manage mailbox migrations from on-premises to Exchange Online
• Configure Exchange Online Protection (EOP), DLP policies, and mail flow rules
• Implement retention policies, eDiscovery, and compliance features
• Monitor service health and manage M365 compliance requirements
• Oversee migration from Enterprise Vault to M365 native archiving/retention
  

Microsoft Teams Administration (25%)

• Administer Teams environment including team/channel governance and lifecycle policies
• Configure Teams voice features including Direct Routing, calling policies, and phone system
• Manage Teams apps, bots, custom integrations, and connector policies
• Implement Teams compliance including retention, eDiscovery, communication compliance, and information barriers
• Configure guest access, external access, meeting policies, and live events
• Troubleshoot Teams connectivity, quality issues, and client problems
• Manage Teams device administration (phones, room systems, displays)
  

Email Security & Proofpoint Administration (15%) 

• Administer Proofpoint Email Security platform and configure filtering policies
• Manage threat protection including TAP, URL Defense, and Attachment Defense
• Monitor and respond to security incidents and phishing campaigns
• Implement and maintain email authentication (DMARC, SPF, DKIM) and encryption
• Generate compliance and security reports
  

M365 Ecosystem & Power Platform Support (10%)

• Support Power Automate flows integrating with Exchange, Teams, and SharePoint
• Assist with Power Platform governance, DLP policies, and connector security
• Maintain integration points between SharePoint Online, OneDrive, and Teams
• Support automation solutions leveraging M365 services
• Understand licensing implications across M365 workloads
  

Automation & Scripting (10%) 

• Develop and maintain PowerShell scripts for Exchange, Teams, and M365 automation
• Utilize Microsoft Graph API for advanced automation and reporting
• Create bulk operation scripts for user provisioning, migrations, and configuration changes
• Automate routine administrative tasks and reporting
• Document and maintain script libraries and automation workflows
  

Additional Duties

• Participate in on-call rotation to provide Tier 2 support for M365 Platform
• Provide Tier 3 support for escalated email and Teams issues
• Document configurations, maintain procedures, and train staff
• Collaborate with IT security and compliance teams on email and collaboration security initiatives
• Assist with M365 governance and adoption planning

Required Technology & Experience

Experience Requirements 

• 3-5 years email and collaboration platform administration experience
• Microsoft Exchange Server (2016 or later) administration experience
• Exchange Online and Microsoft 365 administration experience
• Microsoft Teams administration experience
• Proven experience with hybrid Exchange environments and cloud migrations
• PowerShell scripting experience for automation and bulk operations
• Email security platform administration (Proofpoint preferred)
  

Required Technical Skills

Exchange & Email

• Exchange Server 2016/2019/SE and Exchange Online administration
• Hybrid Exchange configuration and coexistence management
• Email security protocols (SPF, DKIM, DMARC, TLS/SSL, MTA-STS)
• Mail flow troubleshooting and transport rule configuration
• Mailbox migration tools and methodologies
  

Microsoft Teams 

• Teams administration including governance, policies, and compliance
• Teams voice/calling configuration (Phone System, Direct Routing)
• Teams PowerShell module and Microsoft Graph API
• Meeting and live event configuration
• Teams device administration
  

M365 Platform 

• Microsoft 365 Admin Center, Security & Compliance Center, and Teams Admin Center
• Azure AD/Entra ID administration and conditional access
• Microsoft 365 licensing and service management
• DLP policies and information protection across workloads
  

Security & Compliance 

• Proofpoint Email Protection platform (or similar email security solution)
• eDiscovery and content search across Exchange and Teams
• Retention policies and records management
• Compliance features including communication compliance and information barriers
  

Scripting & Automation

• PowerShell scripting (Exchange Management Shell, Exchange Online PowerShell, Teams PowerShell)
• Microsoft Graph API basics
• Automation and bulk operations scripting
• Basic understanding of Power Automate
  

Infrastructure 

• Active Directory and DNS management
• Certificate management and PKI basics
• Load balancers and network connectivity concepts
• Windows Server administration
  

Preferred Qualifications 

• Microsoft 365 Certified: Messaging Administrator Associate (MS-203)
• Microsoft 365 Certified: Teams Administrator Associate (MS-700)
• Microsoft Certified: Security, Compliance, and Identity Fundamentals (SC-900)
• Proofpoint Certified Administrator
• Experience with Enterprise Vault administration and EV-to-M365 migrations
• Experience with Power Platform (Power Automate, Power Apps)
• Knowledge of regulatory compliance frameworks (GDPR, HIPAA, SOX, etc.)
• Experience with Microsoft Teams voice/calling and Direct Routing
• GitHub/version control for script management
  

​​​​​​​Desired Soft Skills 

• Strong analytical and troubleshooting abilities
• Excellent documentation and communication skills
• Ability to work independently and manage multiple priorities
• Customer service orientation for end-user support
• Proactive approach to system monitoring and maintenance
  

If you are interested in this position, please send me a copy of your latest resume at  with the information requested below: Also, please let me know what time/number is best to call to discuss this great opportunity. In case you are not interested in this position, or this is not a right fit for you, please feel free to share this opportunity with your friends/networks or anyone you know who may be interested in this position. Thank you!

• Availability to speak with me.
• Updated resume 
• Best Rates
• Contact #

Please don’t hesitate to contact me with any question (s) you may have. All employment is decided on the basis of qualifications, merit, and business need.

Regards,

Meryl Nabi
Recruitment Specialist
IQuasar LLC
Cleared Recruitment | Proposal Development | Technology

Direct:
Office: , Ext: 568

IQuasar LLC is an Equal Opportunity and Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion/belief, national, social, or ethnic origin, disability, gender/gender identity, marital/partnership status, pregnancy, medical history or genetic information, family or parental status, or any other status protected by federal and state regulations.