Software Engineer - Full Stack

KASTLE SYSTEMS · Falls Church, Virginia, United States

Location
Falls Church
Job Type
Full-time
Posted
July 08, 2026

Job Description

Overview

Kastle Systems is seeking a Software Engineer II Full Stack to design, develop, test, and maintain software applications supporting the company's Security-as-a-Service platform. The position requires applying software engineering principles to develop scalable applications, APIs, and integrations that support customer-facing and internal business systems.

The Software Engineer II works independently on moderately complex software development projects and collaborates with product, quality assurance, operations, and engineering teams to deliver secure, reliable, and maintainable solutions. 


Responsibilities

Application Development

  • Design, develop, test, and maintain full-stack software applications.
  • Develop software solutions using technologies including C#, .NET, JavaScript, TypeScript, SQL Server, and related frameworks.
  • Build and maintain web applications supporting internal and custome...
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