Lead System Engineer Windows Platform

This position requires office presence of a minimum of 5 days per week and is only located in the location(s) posted. No relocation is offered.

AT&T will not hire any applicants for this position who require employer sponsorship now or in the future.

Join AT&T and help support strengthen and modernize the enterprise applications and technologies that keep critical business processes running. The Enterprise Architecture & Service Enablement Engineering and Operations team (EASE-EO) manages applications compute infrastructure and operations. The team designs and implements secure solutions automation and operational tooling. We ensure compliance with vulnerability management requirements SOX PCI and audit controls. When you step into a career with AT&T you wont just imagine the future youll help maintain todays critical systems while modernizing them for tomorrow.

What youll do:

Support maintain enhance and modernize enterprise-grade Web Forms applications hosted on Windows Server and IIS. Provide hands-on application support across C# JavaScript CSS HTML Visual Studio Git SQL Server Entra ID SSO OWIN middleware and related Windows-based application technologies.

Drive application reliability audit readiness controlled software delivery and process optimization by learning the existing application architecture understanding documented SOX control narratives producing evidence for recurring audit testing and ensuring code changes are developed tested documented and deployed through established change control processes.

Focus on transitioning from legacy application-specific support practices to more standardized sustainable operating models by improving documentation strengthening evidence-generation procedures reducing manual support effort enhancing deployment discipline and preparing the application for future modernization from Web Forms to a newer technology platform.

• Architecture & Design: Evaluate and support the architecture of a business-critical Web Forms application including IIS hosting SQL Server integrations Entra ID SSO OWIN middleware role-based access logic approval workflows audit logging and evidence-producing processes. Identify opportunities to improve reliability maintainability documentation and modernization readiness.
• Agile & DevOps Enablement: Support Agile and DevOps practices by maintaining disciplined Git-based source control documenting release procedures validating application changes and following established change control processes. Help modernize the deployment model from manual or semi-manual releases toward secure repeatable CI/CD pipelines using tools such as Jenkins REVUP and standardized deployment automation.
• Data and AI-Enabled Release Management Strategy: Support the evolution from manual or application-specific release practices toward standardized repeatable and auditable delivery models. Use application data SQL Server records audit logs change documentation and operational reporting to improve release readiness risk assessment deployment validation and production reliability. Identify opportunities to introduce automation analytics and reporting improvements that reduce manual effort and strengthen change control execution.
• Requirements & Integration: Translate business operational and audit-related needs into technical specifications for application enhancements defect resolution reporting access management and evidence-generation processes. Support reliable integration across Web Forms SQL Server IIS Windows Server Entra ID SSO OWIN middleware email notifications and related enterprise infrastructure.
• Technical Leadership: Guide cross-functional business application infrastructure and support teams through enhancement planning defect resolution release readiness production support and modernization activities. Align technical solutions with business objectives while improving application reliability maintainability audit readiness and operational execution.
• Performance & Reliability: Proactively monitor and analyze applications SQL Server IIS Windows Server and infrastructure performance to identify bottlenecks troubleshoot issues and reduce production incidents. Track assess and remediate application and platform vulnerabilities coordinating patching activities across application code IIS Windows Server SQL Server third-party components and related dependencies to ensure remediation is completed within defined SLAs. Build dashboards and operational reporting to track application health release progress defect trends incident metrics audit readiness vulnerability remediation status patching progress SLA compliance and continuous improvement outcomes.
• Governance & Compliance: Standardize release and change management practices through secure auditable and repeatable processes for change documentation deployment validation approval tracking access control audit evidence and post-release verification. Strengthen compliance reduce operational risk and improve production readiness across the application environment.
• Continuous Improvement: Leverage post-release analytics incident trends defect patterns and stakeholder feedback to refine support processes release practices documentation monitoring and production readiness. Identify and adopt practical improvements in automation reporting tooling and modernization to increase reliability reduce risk and improve delivery outcomes.
• Documentation & Training: Maintain standardized documentation process guides training materials and operational playbooks for release and change management practices. Provide training to enterprise partners on RM/CM workflows reporting risk identification audit traceability and repeatable processes that improve deployment readiness and operational consistency.

• Mentoring; Drives Culture of Continuous Improvement: Mentor team members and enterprise partners on application support release/change management discipline documentation standards audit readiness and operational troubleshooting. Promote knowledge sharing process consistency and practical improvements that strengthen reliability delivery quality and support effectiveness.

What youll need:

• Strong knowledge of the software development DevOps release management change management and IT service management environments. Experience supporting controlled auditable software delivery for enterprise applications including source control release documentation deployment validation change approvals post-release verification and production support processes.
• Data and AI-Enabled Operations Skillset: Experience using application data SQL Server records audit logs change records operational reports KPI metrics and dashboards to improve release readiness change quality vulnerability remediation tracking SLA compliance production reliability and audit readiness. Familiarity with SQL-based reporting to support documentation reporting risk identification and process automation.
• Governance and Communication: Experience establishing and improving process frameworks standardized playbooks release/change management procedures audit evidence practices vulnerability remediation tracking patching documentation and operational support models. Ability to communicate clearly with business application infrastructure security audit and support stakeholders to align priorities manage risk and support consistent enterprise execution.

What youll bring:

Required

• 5 years of experience in systems engineering application support IT service management release management change management or software delivery for enterprise applications.
• Experience supporting the software development lifecycle in Agile DevOps and controlled release environments including source control deployment planning change documentation testing coordination approval tracking post-release validation and production support.
• Hands-on experience supporting Windows-based enterprise applications using technologies such as Web Forms C# SQL Server IIS Windows Server Visual Studio Git JavaScript HTML CSS Entra ID SSO OWIN middleware or related application technologies.
• Experience using SQL Server records application data audit logs operational reports dashboards KPI metrics and ITSM tools to support release readiness change quality incident tracking audit readiness vulnerability remediation patching status and SLA compliance.
• Knowledge of modern release management change management ITSM and production support practices including controlled deployments change approvals evidence generation access control validation defect tracking and operational risk reduction.
• Proficiency with reporting documentation and communication tools such as Excel PowerPoint ServiceNow or similar ITSM platforms and standardized process documentation/playbook creation.

Preferred

• BS/BA in Computer Science Information Systems Engineering or a related technical field or equivalent work experience.
• Experience with tools such as Jira Jira Align Jira Service Management Jira Cloud Git Jenkins ServiceNow SQL Server Management Studio Visual Studio or similar enterprise delivery and support tools.
• Experience supporting vulnerability remediation application patching dependency updates security findings and SLA-based remediation tracking for business-critical applications.
• Experience modernizing or preparing legacy applications for modernization including documentation cleanup deployment standardization support-process improvement and migration planning from older technology platforms.
• Relevant certifications in Agile SAFe DevOps ITIL/ITSM ServiceNow Jira cloud cybersecurity or related technology areas.
• Familiarity with generative AI or prompt engineering concepts that can support documentation reporting workflow improvement risk identification knowledge management or process automation.

#LI-Onsite Full-time office role.

Ready to join our team

Apply today.