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User Interface Subject Matter Expert (SME) / UI Team Lead

Nationwide IT Services
Arlington, VA Full Time
POSTED ON 7/22/2026
AVAILABLE BEFORE 9/22/2026

User Interface Subject Matter Expert (SME) / UI Team Lead

Nationwide IT Services, NIS, is seeking a User Interface Subject Matter Expert (SME) / UI Team Lead for a potential opportunity to provide technical leadership for the design, development, integration, and support of modern web-based user interfaces and search-enabled applications. This position leads the UI team and serves as the primary expert in front-end and web application development, ensuring that solutions are scalable, maintainable, secure, and aligned with mission and business requirements. The UI SME works closely with cross-functional teams in Agile environments to deliver high-quality applications leveraging modern frameworks, messaging technologies, and enterprise search capabilities.

Active Secret clearance required.
100% on-site

Key Responsibilities

  • Serve as the UI team lead and provide technical leadership for user interface design, development, integration, and support activities.
  • Lead the development and maintenance of web applications using ASP.NET C# MVC and ASP.NET Core technologies.
  • Design, build, and support responsive, scalable, and user-friendly interfaces using modern web development frameworks and tools.
  • Provide expertise in decoupled application development leveraging message queuing technologies to support scalable and resilient system architectures.
  • Support application and enterprise search capabilities, including implementation, tuning, and integration of search solutions.
  • Provide technical guidance for ElasticSearch and/or AWS OpenSearch implementations, including configuration management of high-availability cloud OpenSearch clusters.
  • Collaborate with developers, architects, infrastructure teams, and stakeholders to ensure UI solutions integrate effectively with backend services, search platforms, and enterprise systems.
  • Participate in Agile development activities, including sprint planning, design reviews, code reviews, testing, and release planning.
  • Recommend improvements to UI architecture, application performance, usability, maintainability, and development processes.
  • Ensure development activities follow established coding standards, security requirements, and best practices.

Minimum Qualifications

  • 10 years of software/web development experience.
  • 5 years of experience with Agile development methodologies.
  • 5 years of ASP.NET C# MVC-based web development experience using Visual Studio 2019 or higher.
  • 5 years of experience with Application Search or Enterprise Search technologies.
  • Experience with ElasticSearch; AWS OpenSearch experience is a plus.
  • Experience in configuration management of a cloud-based high-availability OpenSearch cluster with 10 or more nodes.
  • 5 years of experience in decoupled application development leveraging message queuing.
  • 2 years of experience with React.js or AngularJS.
  • 1 year of experience with ASP.NET Core using Visual Studio 2019.

Leadership Responsibilities

  • Lead and mentor the UI team in the delivery of modern web applications and interface solutions.
  • Provide direction on front-end architecture, coding practices, integration strategies, and development standards.
  • Coordinate UI development efforts with search, middleware, backend, and infrastructure teams to ensure successful end-to-end delivery.

Clearance Requirement

  • Active Secret clearance required.

Work Location
Work will be performed at DEA offices in Merrifield, VA; DEA Headquarters in Arlington, VA; and other offices deemed appropriate by the Government.

Why Join Nationwide IT Services?

Nationwide IT Services is a trusted government contractor supporting Department of Defense customers. We offer the opportunity to work on high-impact cybersecurity missions alongside experienced professionals in a collaborative and growth-focused environment.

Salary.com Estimation for User Interface Subject Matter Expert (SME) / UI Team Lead in Arlington, VA
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