NET Software Developer - Sunnyvale CA

Bring your .NET expertise to a hands-on development role supporting software used in a manufacturing and production environment. You'll design, build, maintain, and improve Windows and web applications while working across modern .NET technologies, rich user interfaces, databases, and hardware-connected systems.

This opportunity is ideal for a developer who likes owning applications from start to finish-not just writing code, but helping shape solutions, troubleshoot real production challenges, and make systems faster and more reliable. You'll work with C#, Blazor, WPF, WinForms, MVVM, SQL, Oracle, and automation tools while collaborating with technical teams and internal users to deliver practical software that supports daily operations.
Required Skills & Experience
5+ years of professional .NET development experience, preferably in manufacturing, semiconductor, or industrial environments

Strong experience with C#, VB.NET, .NET Core, .NET 6+, .NET Framework 4.7+, and object-oriented programming

Experience developing Windows, web, and rich user-interface applications using WPF, WinForms, Blazor, and MVVM

Experience with LINQ, ADO.NET, design patterns, Visual Studio 2019+, Git, or Bitbucket

Experience working with Oracle and SQL Server databases, including stored procedures

Bachelor's degree in Computer Science or a related field-or equivalent professional experience
Desired Skills & Experience
Experience working with manufacturing equipment, semiconductor processes, or hardware-connected applications

Familiarity with SEMI communication protocols, including SECS/GEM or Modbus TCP

Experience with SPC software, NI DAC I/O, Advantech remote I/O, or serial-to-Ethernet systems

Knowledge of microservices, MySQL, MariaDB, C, C++, or Visual Studio Code

Scripting experience with Linux Bash, PowerShell, or Windows Batch

Experience with Python or Java
What You Will Be Doing
Design, develop, test, and maintain scalable .NET applications

Build and enhance Windows, web, desktop, and front-end user interfaces

Work with engineering and business teams to define requirements and deliver new features

Troubleshoot, debug, upgrade, and optimize applications for performance and reliability

Participate in code reviews, architectural discussions, and software development lifecycle activities

Develop and maintain applications that communicate with databases, manufacturing systems, and hardware devices
Tech Breakdown
30% .NET Application Development and Software Engineering

20% Windows, Web, and User Interface Development

15% Database Development and Integration

15% Application Troubleshooting, Testing, and Optimization

10% Manufacturing, Hardware, and Device Integration

10% Code Reviews, Documentation, and Technical Collaboration
Daily Responsibilities
Develop and maintain C# and VB.NET applications

Build user interfaces with WPF, WinForms, Blazor, and MVVM

Work with Oracle, SQL Server, stored procedures, LINQ, and ADO.NET

Debug application issues and improve performance, reliability, and security

Review code, document solutions, and participate in technical planning

Collaborate with engineering teams and internal users to support application needs