NET Software Developer - Sunnyvale CA

Gtatelecom; Sunnyvale (CA); On-site; USD 120,000 - 180,000; Full time

Job summary

Gtatelecom in Sunnyvale, California is seeking a proficient .NET developer to own end-to-end software that supports manufacturing and production workflows. You will design, build, maintain, and improve Windows and web applications across .NET technologies, with rich user interfaces, databases, and hardware-connected systems.

You will work hands-on from design to deployment, collaborating with engineering and business teams to define requirements, implement features, and optimize performance for

Qualifications

• 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 with Oracle and SQL Server databases, including stored procedures.
• Bachelor’s degree in Computer Science or a related field—or equivalent professional experience

Responsibilities

• 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.

Skills

.NET development (5+ years)

C#, VB.NET, .NET Core, .NET 6+

WPF, WinForms, Blazor, MVVM

LINQ, ADO.NET, design patterns

Oracle and SQL Server databases

Education

Bachelor’s degree in Computer Science or related field

Tools

Visual Studio 2019+

Git

Bitbucket

Job description

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