Kastle Systems
Software Engineer - Full Stack
US-VA-Falls Church
Job ID: 2026-5043
# of Openings: 1
Category: Information Technology & Software Development
Kastle - Falls Church
Overview
Responsibilities
Software Engineer - Full Stack
US-VA-Falls Church
Job ID: 2026-5043
# of Openings: 1
Category: Information Technology & Software Development
Kastle - Falls Church
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.
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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 customer-facing business functions.
- Develop and maintain RESTful APIs and system integrations.
- Create reusable software components and services.
Database and Integration Development
- Design and maintain database objects, queries, stored procedures, and data models.
- Develop integrations between enterprise systems and cloud-based applications.
- Troubleshoot application, integration, and database issues.
Software Quality and Reliability
- Perform unit testing and participate in integration and system testing activities.
- Participate in peer code reviews.
- Analyze and resolve software defects.
- Support software deployments and post-production issue resolution.
Cloud and Platform Support
- Develop applications deployed within cloud environments including AWS and Azure.
- Support containerized application deployments and CI/CD processes.
- Participate in troubleshooting application performance and scalability issues.
Collaboration
- Participate in Agile software development activities including sprint planning, estimation, retrospectives, and backlog refinement.
- Collaborate with product managers, architects, quality engineers, and business stakeholders.
- Translate business requirements into technical solutions.
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