RIXT Recruitment

Freelance Senior .NET Developer

Amstelveen, NH, NL

$4.8
4 days ago
Save Job

Summary

About our Client

Our client is an independent, data driven and fast growing asset management company and hedge-fund growing towards their ambition of becoming a FinTech company. They have positioned themselves as a niche player in developing a unique mix of quantitative and fundamental investment strategies over the last decade. They use a self-developed multi-factor valuation system with machine learning and artificial intelligence that continuously looks at which companies are the most attractive in terms of valuation. The unique ‘man & machine’ investment concept enables the Portfolio Management Department to realize high Sharpe ratios. This department processes several million data items per day through a layered system of several hundred programmed investment decisions.


Your Role

To support the expansion and growth and reach their ambition of growing towards a FinTech company we are currently recruiting for a Senior .NET Developer with Azure experience to join the IT team and mainly focus on designing, developing, and deploying web applications (portals), with a focus on leveraging Microsoft Azure's cloud services. You will also participate in the transformation of migrating the IT & Data Infrastructure to Azure cloud, with the clear goal of making the environment scalable and future proof.


Your Skills and Expertise:


Core ASP.NET 4.8 Developer Skills

NET Framework 4.8 Proficiency

  • Strong understanding of the .NET Framework architecture.
  • Experience with Web Forms, MVC, or both (depending on the application).
  • Mastery of C# and/or VB.NET.


ASP.NET Web Development

  • Web Forms or MVC (depending on the project).
  • Server-side controls, view state management, postback handling.
  • HTTP pipeline, session and application state.


Frontend Integration

  • HTML, CSS, JavaScript, and jQuery.
  • Familiarity with AJAX and client-side validation frameworks.


Entity Framework / ADO.NET

  • Database-first or code-first development.
  • Writing efficient LINQ queries and stored procedures.
  • SQL Server proficiency (T-SQL, performance tuning, indexing).


Authentication & Authorization

  • Forms Authentication, Windows Authentication, Claims-based auth.
  • Role-based access control (RBAC).


Debugging and Testing

  • Visual Studio debugging tools.
  • Unit testing frameworks (NUnit, MSTest).
  • Postman/Fiddler for API testing.





☁️ Azure Skills (for Deployment, DevOps, and App Management)

Azure App Services

  • Deploying ASP.NET apps to Azure App Services.
  • Configuring web.config for cloud settings.
  • Using deployment slots for staging/production workflows.


Azure DevOps

  • CI/CD pipelines for ASP.NET apps.
  • Build and release pipelines with MSBuild and Visual Studio projects.


Azure Storage & Databases

  • Working with Azure SQL Database.
  • Using Blob/Table storage where relevant.


Monitoring & Diagnostics

  • Azure Monitor, Application Insights.
  • Diagnosing performance issues and exceptions.


Networking and Identity

  • Azure Active Directory integration.
  • VNETs, NSGs, App Gateway if app interacts with secured resources.


Containers & Legacy Modernization (Bonus)

  • If modernizing ASP.NET 4.8 apps: knowledge of running on Windows Containers in Azure Kubernetes Service (AKS) or App Service for Windows.



Soft Skills:

  • Strong understanding of SOLID principles and design patterns.
  • Familiarity with legacy code refactoring.
  • Good documentation and communication skills.
  • Agile methodology (Scrum/Kanban) experience.



Your Profile

  • Minimum HBO level – University degree in Computer Science or a comparable study
  • 5+ years of experience in ASP.NET development with a focus on web applications.
  • 3+ years of experience with Microsoft Azure or other cloud platforms.
  • A solid portfolio of past projects, showcasing both technical skills and contributions to large-scale web applications.
  • Experience or proven interest in the financial sector, capital markets and/or asset management
  • Excellent written and spoken English
  • Understanding of Dutch is a plus


The Offer

  • Start date: A.S.A.P
  • Duration: 7 Months (initially)
  • Hourly rate: TBD
  • Location: Amstelveen (Hybrid)


Interested? Or do you have questions about this assignment?

RIXT® Recruitment exclusively handles the recruitment & selection for this role. Contact Ameet Sidhoe from RIXT®: 06 - 18 83 05 76 or email at [email protected]

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