Full Stack .NET Developer (Blazor / WPF / Web API / Device Integration)

Overview

Job Summary
We are looking for a skilled Full Stack .NET Developer with strong expertise in .NET Core, Web API, Blazor, and WPF, along with hands-on experience in device and hardware integration. The ideal candidate will work on web and desktop applications that integrate with peripherals such as cash acceptors, payment devices, printers, and other kiosk hardware, delivering secure, high-performance, and reliable solutions.

Key Responsibilities
Design, develop, test, and maintain applications using C#, .NET Core, and ASP.NET Core Web API

Develop modern web applications using Blazor (Server and/or WebAssembly)

Build and maintain WPF desktop applications using MVVM architecture

Design, develop, and consume RESTful APIs for web, desktop, and device-based applications

Integrate and manage hardware devices such as cash acceptors, payment terminals, printers, scanners, and other peripherals

Work with device SDKs, drivers, COM/USB/Serial (RS232) communication, and third-party APIs

Handle device error states, retries, logging, and recovery mechanisms

Develop and optimize database objects using MS SQL Server

Ensure application performance, security, and scalability, especially in hardware-dependent environments

Debug, troubleshoot, and resolve application and device-related issues

Collaborate with cross-functional teams to translate business and hardware requirements into technical solutions

Participate in code reviews and follow best coding standards and practices

Technical Must-Have Skills
Strong proficiency in C# and .NET Core

Hands-on experience with ASP.NET Core Web API

Strong experience with Blazor (Server and/or WebAssembly)

Experience developing WPF desktop applications

Solid understanding of MVVM and MVC architecture

Experience with device/hardware integration, including:

Cash acceptors / bill validators

Payment devices (POS, card readers, UPI, NFC)

Printers (thermal, receipt, barcode)

Knowledge of Serial/USB/TCP-IP communication protocols

Strong knowledge of MS SQL Server

Experience with RESTful API design and integration

Familiarity with Git or other version control systems

Good-to-Have Skills
Experience with Entity Framework / EF Core

Understanding of Microservices architecture

Experience working on kiosk-based or embedded systems

Soft Skills
Strong problem-solving and analytical skills

Good communication and teamwork abilities

Ability to work independently with minimal supervision

Attention to detail and commitment to quality

Educational Qualification
Bachelor’s degree in Computer Science, Engineering, or a related technical field
(Equivalent hands-on experience in .NET Core, Blazor, WPF, Web API, and device integration will also be considered)