Lead System Engineer – Windows ASP.NET Platform

AT&T

Lead System Engineer maintaining enterprise-grade ASP.NET Web Forms applications for AT&T. Focus on reliability, audit readiness, and optimizing delivery processes in a structured engineering team.

Posted 7/31/2026full-timeAlpharetta • Texas • 🇺🇸 United StatesSenior💰 $141,300 - $237,400 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates extensive experience in supporting and modernizing enterprise-grade ASP.NET Web Forms applications, with a strong focus on Agile and DevOps practices, change management, and application reliability. Proficient in utilizing SQL Server, Git, and various reporting tools to ensure compliance and optimize software delivery processes.

Highest-signal resume keywords

ASP.NET Web FormsC#SQL ServerAgile PracticesDevOps

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Application SupportChange ManagementRelease ManagementSoftware DeliveryWindows ServerIISJavaScriptHTMLCSSOWIN Middleware

Soft Skills

DocumentationCommunication

Tools & Technologies

Visual StudioGitEntra ID SSOServiceNowExcelPowerPoint

Industry Keywords

IT Service ManagementAudit ReadinessOperational Risk ReductionControlled DeploymentsEvidence Generation

Tech Stack

Tools & technologies

ASP.NETITSMJavaScript.NETServiceNowSQL

About the role

Key responsibilities & impact

Support, maintain, enhance, and modernize enterprise-grade ASP.NET 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.
Evaluate and support the architecture of a business-critical ASP.NET 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.
Support Agile and DevOps practices by maintaining disciplined Git-based source control, documenting release procedures, validating application changes, and following established change control processes.
Support the evolution from manual or application-specific release practices toward standardized, repeatable, and auditable delivery models.

Requirements

What you’ll need

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 ASP.NET 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.

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