Principal System Engineer

AT&T

Microsoft Exchange Engineer managing email solutions for AT&T's hybrid Exchange environment and providing technical leadership. Designing, implementing, and maintaining Exchange systems to ensure high performance and reliability.

Posted 5/22/2026full-timeAtlanta • 🇺🇸 United StatesLead💰 $174,100 - $261,100 per yearWebsite

Tech Stack

Tools & technologies

CloudDNS

About the role

Key responsibilities & impact

System Design and Architecture: Design and create scalable, high-performance, and reliable system architectures and platforms.
Requirements Analysis and Integration: Translate business needs into technical specifications and ensure seamless integration of system components.
Technical Leadership and Collaboration: Provide guidance to development teams, align technical solutions with business objectives, and collaborate with stakeholders.
Performance, Reliability, and Troubleshooting: Conduct performance and reliability analysis, and resolve system issues and bottlenecks.
Documentation, Security, and Continuous Improvement: Maintain detailed system documentation, ensure security and compliance, and stay updated with industry trends for ongoing improvement.

Requirements

What you’ll need

8-10 years of experience in a large Hybrid Exchange environment
Extensive experience in designing, implementing, and managing Microsoft -Exchange Server (2016/2019) and Exchange Online
Experience with PowerShell scripting for automation and management tasks.
Experience with web development, c#, MS Graph
Proficient in Microsoft 365 and hybrid cloud solutions
Strong knowledge of Active Directory, DNS, and related infrastructure components
Familiarity with security practices and compliance requirements (e.g., GDPR, HIPAA)
Excellent problem-solving skills and the ability to work under pressure
Strong communication skills, both written and verbal
Relevant certifications such as MCSE: Productivity, Microsoft 365 Certified: -Messaging Administrator Associate, or equivalent are highly desirable.

Benefits

Comp & perks

Medical/Dental/Vision coverage
401(k) plan
Tuition reimbursement program
Paid Time Off and Holidays (based on date of hire, at least 23 days of vacation each year and 9 company-designated holidays)
Paid Parental Leave
Paid Caregiver Leave
Additional sick leave beyond what state and local law require may be available but is unprotected
Adoption Reimbursement
Disability Benefits (short term and long term)
Life and Accidental Death Insurance
Supplemental benefit programs: critical illness/accident hospital indemnity/group legal
Employee Assistance Programs (EAP)
Extensive employee wellness programs
Employee discounts up to 50% off on eligible AT&T mobility plans and accessories, AT&T internet (and fiber where available) and AT&T phone.

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

system designarchitectureMicrosoft Exchange ServerExchange OnlinePowerShell scriptingweb developmentC#MS GraphMicrosoft 365Active Directory

Soft Skills

technical leadershipcollaborationproblem-solvingcommunication

Certifications

MCSE: ProductivityMicrosoft 365 Certified: Messaging Administrator Associate