Title:Senior .NET/Modernization Consultant (Identity Federation)
Duration: 2 3 months (Short-term Contract)
Location: Remote(EST).
Summary
Project Overview:
The client is initiating a high-priority migration project to modernize the authentication layer of 19 legacy applications. The goal is to transition from on-premise Active Directory (AD) authentication to Microsoft Entra ID (formerly Azure AD) Federated authentication.
Scope of Work:
Direct Migration: Lead the hands-on conversion of an initial 3 4 applications (mixture of .NET 4.7.2 and Classic ASP).
Knowledge Transfer: Act as a technical mentor to the existing development team, providing "over-the-shoulder" training and documentation to enable them to migrate the remaining 15+ applications independently.
Duration: 2 3 months (Short-term engagement).
Technical Requirements
Legacy Framework Expertise: Deep proficiency in .NET Framework 4.7.2 and Classic ASP.
Identity & Access Management (IAM): Proven experience migrating applications from Windows Authentication/LDAP to Entra ID (Azure AD).
Protocols: Strong understanding of modern identity protocols, specifically SAML 2.0 and OpenID Connect (OIDC) / OAuth 2.0.
Middleware: Experience using OWIN middleware or MSAL libraries to handle federation in older .NET environments.
Legacy Integration: Ability to implement modern authentication patterns within Classic ASP environments (e.g., using headers, reverse proxies, or custom COM wrappers).
Core Responsibilities
Assess current AD-integrated codebases to identify dependencies.
Configure App Registrations and Enterprise Applications within the Microsoft Entra admin center.
Refactor authentication logic to support Federated SSO.
Conduct code reviews and training sessions for the permanent developer staff.
Soft Skills
Consultative Approach: Ability to explain complex identity concepts to developers unfamiliar with federation.
Efficiency: Capable of delivering a "gold template" migration within a tight 60-90 day window
Must have skills
Identity Federation
Application Modernization
Classic ASP
.NET
Identity & Access Management
Entra ID
SAML
OpenID Connect
OAuth
application migration
Classic ASP
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