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Senior Systems Administration Engineer, Microsoft 365

  • Hybrid work
  • Full time, Day
  • Travel: No

Job Category: Information Technology

Job Level: Individual Contributor

Division: Cox Communications


  • 6305 Peachtree Dunwoody Rd, Atlanta, Georgia
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This is a hybrid-based position and will require time in office as needed.

As a Senior Systems Administrator, you will be responsible for supporting our Microsoft 365 ecosystem. In addition to our cloud platforms, this role will also maintain our on-premises SMTP relay and assist in the management of our Microsoft Teams Room Systems, email hygiene platforms and Cisco voice infrastructure.


Primary Responsibilities and Essential Functions

• Microsoft Office 365 technical subject matter expert in end user productivity with experience in Azure AD, SharePoint, Security and Compliance Center and Intune

• Complete ServiveNow ticket work within the defined SLAs

• Interact with the team and internal customers to ensure continuity and customer satisfaction of services

• Actively participate in developing operational models, processes, and procedures

• Responsible for deliverables of technical projects relating to messaging systems, collaborating with enterprise solutions design to deliver build diagrams and run documentation for operations

• Work with service owners and business leaders to recommend solutions to address new business requirements

• Provide operations and Tier III support for the following Microsoft services:

* Teams

* Exchange Online

* Microsoft Cloud Voicemail

* Exchange SMTP Relay

* Cisco Unified Communications Manager

* Cisco Telepresence

• Tier III support for client systems related to our core voice services

* Cisco Unified Communications Manager

* Cisco Telepresence

• Tier III support on email security systems such as ProofPoint and EOP and a basic understanding of SPF, DMARC and DKIMM

• Communicate updates and release information to Change Management and user engagement teams


• Bachelor’s degree in a related discipline and 4 years’ experience in a related field. The right candidate could also have a different combination, such as a master’s degree and 2 years’ experience; a Ph.D. and up to 1 year of experience

• Generally, 5-8 years of experience in related field (i.e. Microsoft Platform technologies in a large enterprise)

• 2+ years of experience with Microsoft Teams.

• Experience migrating users to Office 365 from on premise to MSFT Tenant, or Tenant to Tenant migration

• Experience with routing and switching protocols, TCP/IP, QoS, VLANs, DNS and WAN protocols related to voice technologies

• Strong understanding of Windows Server and desktop operating systems as well as office client systems

• Experience with using PowerShell

• In-depth knowledge of network captures and network troubleshooting

• Working knowledge of load balancing solutions

• Strong diagnostic and problem-solving skills

• Ability to work on many tasks simultaneously

• High level of initiative and critical thinking

• Outstanding customer service, communication, and presentation skills

• Experience writing technical documentation for use in operations

• Ability and willingness to work under a rotational escalation On-Call team


• 5+experience in Microsoft productivity technology

• Microsoft Certified Solutions Expert (MCSE) certification

• Experience with Microsoft ADFS, DirSync, SCCM and SCOM

• Expert knowledge of PowerShell to include parameterized scripting and toolmaking

• Expert in designing actionable Key Process Indicators

• Power BI experience is a plus


About Cox Communications

Cox Communications is the largest private telecom company in America, serving six million homes and businesses. That’s a lot, but we also proudly serve our employees. Our benefits and our award-winning culture are just two of the things that make Cox a coveted place to work. If you’re interested in bringing people closer through broadband, smart home tech and more, join Cox Communications today! 

About Cox

Cox empowers employees to build a better future and has been doing so for over 120 years. With exciting investments and innovations across transportation, communications, cleantech and healthcare, our family of businesses – which includes Cox Automotive and Cox Communications – is forging a better future for us all. Ready to make your mark? Join us today! 


Benefits of working at Cox may include health care insurance (medical, dental, vision), retirement planning (401(k)), and paid days off (sick leave, parental leave, flexible vacation/wellness days, and/or PTO). For more details on what benefits you may be offered, visit our benefits page.

Cox is an Equal Employment Opportunity employer - All qualified applicants/employees will receive consideration for employment without regard to that individual’s age, race, color, religion or creed, national origin or ancestry, sex (including pregnancy), sexual orientation, gender, gender identity, physical or mental disability, veteran status, genetic information, ethnicity, citizenship, or any other characteristic protected by law.

Statement to ALL Third-Party Agencies and Similar Organizations: Cox accepts resumes only from agencies with which we formally engage their services. Please do not forward resumes to our applicant tracking system, Cox employees, Cox hiring manager, or send to any Cox facility. Cox is not responsible for any fees or charges associated with unsolicited resumes.

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