T-Mobile · 6 hours ago
Principal Systems Reliability Engineer, Secure Federal Operations
Herndon, Virginia
Full-time
Hybrid
Senior Level, Lead/Staff
$115K/yr - $207K/yr
7+ years expT-Mobile is a leading telecommunications company, and they are seeking a Principal Systems Reliability Engineer for their Secure Federal Operations. This role is responsible for designing and implementing secure, scalable, and highly reliable technology solutions across cloud platforms, networking, and cybersecurity domains.
Telecom & CommunicationsAppsInternetMobileTelecommunicationsWireless
No H1B
Security Clearance RequiredU.S. Citizen Only
Responsibilities
Develop and implement system designs to improve software delivery speed and operational efficiency
Lead architecture for cross-domain programs ensuring alignment with enterprise standards
Deliver solutions that enhance service availability, scalability, latency, and efficiency
Design and deploy solutions on Azure and AWS
Build and operate cloud-native platforms (Kubernetes, service mesh, ingress, policy engines)
Implement Infrastructure as Code (IaC) for automated deployments
Administer Active Directory and integrate with cloud identity solutions
Configure 802.1X authentication for secure network access
Manage digital certificates lifecycle (issuance, renewal, revocation)
Manage DNS, TCP/IP networks, and network segmentation
Implement firewalls, VPNs, and Zero Trust principles
Apply cybersecurity frameworks and monitor vulnerabilities
Maintain and secure Windows and Linux servers
Utilize SCCM for patch management and compliance reporting
Perform OS hardening and lifecycle management
Manage M365 services including Exchange Online, SharePoint, Teams, and OneDrive
Ensure compliance, security, and availability of collaboration platforms
Implement policies for data governance and identity integration with M365
Develop scripts in PowerShell, Python, or Bash to automate tasks
Support CI/CD pipelines and cloud enablement
Use APM tools (AppDynamics) and observability platforms (Splunk) for troubleshooting
Participate in incident/problem management and disaster recovery planning
Qualification
Required
Bachelor's degree in Computer Science, Engineering, Information Technology, or related field OR equivalent experience
7+ years of progressive experience in systems architecture, platform engineering, or site reliability engineering
Hands-on experience with Azure and AWS cloud platforms
Expertise in Active Directory, DNS, 802.1X, and certificate lifecycle management
Strong background in Windows and Linux operating systems
Proficiency in TCP/IP networking and network security principles
Administration of Microsoft 365 (M365) services (Exchange Online, SharePoint, Teams)
US citizenship (without dual citizenship)
At least 18 years of age and legally authorized to work in the United States
Active security clearance or ability to obtain one
Preferred
Advanced degree with 5+ years of related experience
Automation and scripting using PowerShell, Python, or Bash
Experience working in a cloud environment (public/private)
Knowledge of containerization (Docker, Kubernetes)
Experience in incident and problem management, root cause analysis, and disaster recovery planning
Benefits
Medical, dental and vision insurance
Flexible spending account
401(k)
Employee stock grants
Employee stock purchase plan
Paid time off
Up to 12 paid holidays - which total about 4 weeks for new full-time employees and about 2.5 weeks for new part-time employees annually
Paid parental and family leave
Family building benefits
Back-up care
Enhanced family support
Childcare subsidy
Tuition assistance
College coaching
Short- and long-term disability
Voluntary AD&D coverage
Voluntary accident coverage
Voluntary life insurance
Voluntary disability insurance
Voluntary long-term care insurance
Mobile service & home internet discounts
Pet insurance
Access to commuter and transit programs
Company
T-Mobile
T-Mobile is a telecommunications company that provides wireless communication services, including mobile phone and internet services. It is a sub-organization of Deutsche Telekom.
10001+ employees
Funding
Current Stage
Public CompanyTotal Funding
$17.37B2026-01-05Post Ipo Debt· $2B
2025-10-06Post Ipo Debt· $2.8B
2024-09-23Post Ipo Debt· $2.5B
Leadership Team
John Saw
President of Technology, Chief Technology Officer
Peter Osvaldik
EVP & CFO
Recent News
2026-02-13
2026-02-13
2026-02-13
Company data provided by crunchbase