.NET Core Jobs

Buscamos un ingeniero FullStack con experiencia sólida en .NET/C# y SQL Server para sumarse a un proyecto fintech en etapa temprana. El stack incluye APIs REST con arquitectura de microservicios, frontend en Blazor o React, integraciones con sistemas de pago, y un fuerte componente de seguridad y manejo de datos sensibles. Buscamos a alguien proactivo, capaz de tomar decisiones técnicas y construir desde cero. Bajo NDA compartimos detalles específicos del producto y alcance.

I want to put a fully-automated static security code-review workflow around our ASP.NET Framework and ASP.NET Core repositories. I have already settled on SonarQube as the analysis engine, and I need an Application Security / DevSecOps engineer who can design, build and document the entire pipeline. Here is what I am after: • End-to-end CI/CD integration – every commit and pull request should trigger a SonarQube scan and fail the build when high-severity issues appear. • Custom rule set – we do not yet have our own rules. I will rely on you to translate our security policies into SonarQube custom rules that focus on Authentication & Authorization, Data Validation & Sanitization, and Error Handling & Logging, plus any additional attack surface ...

I am building a web-based application in .NET and need help completing the data-management layer. The system must store and manipulate two primary datasets—user information and transaction records—while enforcing role-based access for Admin and standard User accounts. Here is what I need from you: • Design or refine the database schema so both datasets are structured for scalability and easy reporting. • Build the API and back-end logic in ASP.NET (Core 6 or later preferred) with Entity Framework for data access. • Implement CRUD operations, search, basic filtering, and pagination for each data type. • Add role checks so Admins can see, create, update, and delete everything, while Users have read/write rights only to their own records. • Inte...

I’m expanding an enterprise-level web application built on ASP.NET Core MVC (.NET 6) and need a full-stack developer who can move comfortably between C#, Entity Framework Core, and the browser. You’ll own new features end-to-end: modelling data, writing optimized SQL Server queries and stored procedures, exposing REST endpoints, and bringing the interface to life with JavaScript, jQuery, and responsive HTML5/CSS3. Key focus areas • Front-end: solid command of JavaScript, jQuery, modern HTML5/CSS3, and responsive design techniques so screens render cleanly on desktop and mobile. • Back-end: clean C# code, well-structured controllers, and intermediate-level experience creating and consuming REST APIs. • Data: familiarity with Entity Framework Core and the ...

ONLY FREELANCERS NO COMAPNIES Hi, I have an old .NET desktop application (around 8–9 years old) which runs as a small EXE and currently uses SQL Server Compact Edition database. We need to make some modifications: 1) Migrate the existing SQL Server Compact Edition database to a modern database system. 2) Offline-First Architecture with Auto Sync: The application should continue working offline. When internet is available, backup/offline entries should automatically sync to the main database/server. 3) The software currently has a 1-year expiry key/license system already implemented we need to change few thing here only small changes. 4) some small changes to our exe application. Please let me know: Your experience with old .NET WinForms/WPF applications

Enterprise Codebase Requirement Specification (50K+ LOC) Objective We are looking to source or generate a realistic enterprise-grade software codebase suitable for: Engineering capability evaluation AI code analysis benchmarking Architecture review exercises Enterprise software demonstrations Technical due diligence simulations The repository must resemble a real-world production engineering system with meaningful architectural depth, realistic module separation, and supporting SDLC artifacts. 1. Core Repository Requirements Minimum Codebase Size Total Lines of Code (LOC): 50,000+ Source LOC: 35,000+ Test LOC: 8,000+ Number of Files: 400+ Modules/Packages: 10+ Avoid artificially inflated LOC through: generated code vendor libraries minified assets duplicated files dummy filler classes 2. T...

I maintain a live Angular front-end backed by a .NET 8 / ASP.NET Core Web API running in Azure. The project is stable but growing fast, so I need someone who can step in and own every corner of the stack—from tracking down elusive bugs to shaping brand-new functionality. In practice that means helping with all three areas I juggle daily: troubleshooting production issues, extending the feature set, and refining or adding APIs. When it comes to new features, backend development is where I need the heaviest lift, especially around Entity Framework Core, SQL Server tuning, and clean architectural patterns. You’ll be working in an environment that already uses Azure App Services, Azure SQL, Git, CI/CD pipelines (Azure DevOps), xUnit test projects, and Jira for task tracking. Clear...