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Software Engineer (C#, VB.NET)

LaunchCode

Yesterday
Top Secret
Unspecified
CI Polygraph
IT - Software
Saint Louis, MO (On-Site/Office)

Description

Software Engineer (C#, VB.NET)

Position Type: Full-Time W2 Direct Hire

Location: On-site, St. Louis, MO

Pay: $110k - 160K

Immediately hiring

Position Summary

We are seeking a Software Engineer to support a customer-focused mission, maintaining and modernizing a pair of internal applications. The role involves routine software maintenance, bug fixes, and transitioning legacy software from VB.NET to C#. The initial project phase will include close collaboration with the customer to gather and refine requirements prior to carrying out technical implementation. A successful candidate will have experience with the Microsoft technology stack, AWS services, and related software.

Responsibilities:
  • Provide ongoing maintenance and break-fix support for a legacy VB.NET application
  • Collaborate with customers to define and refine software requirements
  • Lead the re-engineering and migration of an application from VB.NET to C#
  • Implement software changes in a methodical and well-documented manner
  • Support basic UI updates, minor feature enhancements, and reliability improvements
  • Participate in technical meetings and requirement-gathering sessions
  • Follow existing development and configuration management workflows (e.g., Git/GitLab, Jira)


Requirements

  • Active Top Secret clearance (TS/SCI preferred, must be eligible to obtain CI Poly after starting)
  • Experience with Microsoft .NET ecosystem tools such as VB .NET , C# , C++, Visual Studio, WPF.
  • Familiarity with Visual Studio and common debugging tools
  • Firm understanding of object-oriented design, data structures and design patterns
  • Experience working with large code bases
  • Database experience such as PostgreSQL
  • Web Application and application workflow experience
  • Ability to write clear, maintainable, and testable code
  • Solid understanding of software maintenance, version control, and agile practices
  • Experience collaborating with end users or stakeholders to collect requirements


Preferred Qualifications:
  • GIS experience and knowledge of roaster and imagery
  • Experience converting legacy applications to newer frameworks or languages
  • Familiarity with AWS environments (e.g., EC2, S3)
  • Prior work in government or defense contracting environments
  • Experience working with relational databases like PostgreSQL
  • Security+ or equivalent DOD 8570 certification
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Job Category
IT - Software
Clearance Level
Top Secret
Employer
LaunchCode