Onsite Application Support Engineer – .NET

Posted 5 hours ago

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About the role

  • Application Support Engineer ensuring stability, performance, and reliability of enterprise web applications at Alight. Collaborating with development teams and acting as a technical contact for business applications.

Responsibilities

  • Serve as the primary technical point of contact for the Sales & Service Center (SSC) regarding .COM portal issues and functionality questions.
  • Troubleshoot, diagnose, and resolve application incidents, performance issues and platform-related problems across .NET, Kentico, and related components.
  • Perform root cause analysis (RCA) and implement fixes or workarounds to restore service quickly.
  • Investigate and resolve content integration issues within the Kentico CMS environment.
  • Support integrations with downstream systems, including CRM tools, APIs, and shared services.
  • Monitor application health, proactively identify potential issues, and ensure high availability.
  • Maintain and support reporting solutions, including troubleshooting SQL jobs and tuning SQL for optimal performance.
  • Document incidents, enhancements, configuration changes, and resolutions using defect tracking and ITSM tools.
  • Collaborate with infrastructure teams on IIS, deployment issues, caching, environment configuration, and system performance improvements.
  • Work closely with the Application Development team on enhancements, releases, and strategic projects.
  • Participate in iteration planning, release readiness, and feature prioritization with Product Owners.
  • Develop and maintain Knowledge Base Articles (KBAs) related to the customer portal and support workflows.
  • Provide guidance and mentorship to junior support engineers when needed.
  • Ensure adherence to organizational standards for support, coding, testing, and deployment.
  • Assist in validating system changes, performing smoke testing, and supporting production deployments.

Requirements

  • 3-5 years of experience in .NET and web technologies, with at least 3 years in ASP.NET/C# application development or support
  • Strong knowledge of HTML, XML, CSS, and client-side scripting frameworks
  • Hands-on experience with Visual Studio, Azure DevOps, IIS, and related toolchains.
  • Expertise in ASP.NET MVC (4.0+), jQuery, Knockout.js, and modern web development principles.
  • Deep understanding of object-oriented design / architecture.
  • Strong technical capability in Entity Framework, LINQ, SQL Server (schema design, stored procedures, performance tuning).
  • Experience supporting or integrating with CMS platforms, preferably Kentico.
  • Familiarity with SOAP/XML Web Services, REST APIs, and JSON.
  • Experience integrating web applications with CRM tools, preferably Microsoft Dynamics CRM.
  • Ability to work effectively in a team-oriented, collaborative environment.
  • Experience mentoring junior team members and providing technical guidance.
  • 3+ years in IT Application Support, preferably within a customer service-focused environment.

Benefits

  • Options include a variety of health coverage options
  • Wellbeing and support programs
  • Retirement
  • Vacation and sick leave
  • Maternity, paternity & adoption leave
  • Continuing education and training as well as several voluntary benefit options

Job title

Application Support Engineer – .NET

Job type

Experience level

Mid levelSenior

Salary

Not specified

Degree requirement

Bachelor's Degree

Location requirements

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