Front-end .NET Software Developer (TS / SCI )

Aperio Global•Washington, DC

15h•$160 - $190•Onsite

About The Position

Aperio Global is seeking a Senior Frontend Software Engineer to support mission-critical systems used by the U.S. DoD. This role focuses on building secure, intuitive, and highly reliable user interfaces for operators who depend on clarity, speed, and accuracy in high-stakes environments. This role offers the opportunity to work on software where design and usability directly impact real-world operations. Join a cleared development team supporting DoD applications that enable protective intelligence, investigations, and operational coordination. This role focuses on delivering secure, user-centered interfaces for analysts and operators.

Requirements

Active Top Secret SCI (TS/SCI) clearance
4+ years of experience with .NET-based frontend development
Strong understanding of frontend fundamentals and UI best practices
Experience working in secure government environments.
Ability to work onsite in Washington, DC

Nice To Haves

Experience with Blazor Server or Blazor WebAssembly
Familiarity with DHS or Intelligence Community systems
Understanding of federal UX, usability, and accessibility requirements
Prior experience supporting operational or analyst-facing applications.

Responsibilities

Develop and maintain frontend applications using .NET frameworks (Blazor, MVC, Razor)
Implement responsive, accessible user interfaces using HTML, CSS, and JavaScript
Integrate UI components with secure backend APIs
Apply Section 508 and accessibility standards required for federal systems
Collaborate with backend engineers, UX designers, and cybersecurity personnel
Support testing, debugging, and deployment in classified environments
Maintain UI documentation and contribute to system accreditation artifacts