Senior Full stack .NET Developer - Riyadh - Onsite

Role Overview

Key Responsibilities

• Develop and deliver feature improvements for both systems within structured development waves and
• sprint cycles
• Maintain and support the legacy correspondence system (ASP.NET WebForms) must keep it fully
• operational alongside the new system; no degradation acceptable
• Build and extend Angular front-end components, screens, and workflows for both systems
• Implement the planned Entity Framework migration convert existing stored procedures to EF Core
• following the Technical Lead's migration strategy
• Integrate all new features with the Client's Identity Server: SSO flows, MFA enforcement, RBAC controls, and Audit Trail logging
• Implement document and transaction watermarking features (per entity, user, and transaction type a specific tender requirement)
• Participate fully in Agile sprints: estimate tasks, attend daily standups, demo completed work, contribute to retrospectives
• Write unit tests and integration tests for all new and modified code
• Produce and update technical documentation and functional notes in Arabic as required by project reporting

Minimum Qualifications

• Fluent Arabic Speaker is a Must.
• Bachelor's degree in Computer Science, Software Engineering, or equivalent
• 5-8 years of professional experience in full-stack software development
• Experience working on enterprise-grade web applications in production environments
• Prior experience with government or regulated-sector IT systems preferred
• Comfortable working with both legacy codebases and modern frameworks simultaneously

Required Technical Skills

• .NET Core back-end REST API development; primary development platform for both systems
• ASP.NET WebForms legacy system maintenance; experience with WebForms page lifecycle, code-behind
• patterns, and common issues is required, not optional
• Angular (latest LTS) front-end development for both systems; experience with component architecture,
• services, routing, reactive forms, and state management
• SQL Server T-SQL, stored procedure writing, query optimization
• Oracle (PL/SQL basics) for Archiving System data layer work
• Entity Framework Core ORM, code-first migrations, LINQ, navigating stored procedure to EF migrations
• REST API design RESTful endpoint design, versioning, error handling
• Identity Server integration implementing OpenID Connect and OAuth 2.0 client flows; RBAC enforcement
• at API level
• Audit Trail implementation structured logging of all user actions for compliance
• Document watermarking server-side PDF/document stamping per entity and user
• Git branching, merge requests, code review participation
• Unit and integration testing .NET xUnit or NUnit; testing Angular components
• DevOps pipeline integration submitting code that passes automated build and test gates
• React (beneficial listed in tender requirements)
• Node.js (beneficial listed in tender requirements)