Company Description: Solidrange is a cybersecurity company based in Riyadh that builds modern platforms to address cybersecurity and enterprise governance, risk, and compliance (GRC) challenges. The company focuses on transforming the GRC technology landscape so organizations can modernize their practices and reduce operational overhead. Solidranges mission is to reduce human-driven cybersecurity risks, simplify compliance and risk management, and support seamless business continuity. Team members contribute to solutions that help organizations operate securely and efficiently in a rapidly evolving digital environment. About the Role: We are looking for a strong .NET Core Backend Developer to join our team and help build out our robust, multi-tenant application. In this role, you will be taking ownership of complex backend services, ensuring high performance, and maintaining the integrity of our 3-tier architecture. If you are passionate about writing exceptionally clean code, diving deep into SQL performance tuning, and building scalable enterprise systems, we want to hear from you. You will be working closely with our front-end team (Angular) to deliver a seamless and secure user experience. Key Responsibilities Backend Development: Design, build, and maintain scalable APIs and backend services using .NET Core within a classic 3-tier architecture. Database Management & Tuning: Work extensively with SQL Server and Entity Framework Core. Write complex SQL scripts, analyze execution plans, and proactively troubleshoot and optimize query performance to handle large-scale, multi-tenant data. Security & Identity: Implement and maintain robust authentication and authorization flows using Identity Server. Multi-Tenant Architecture: Ensure data isolation, security, and scalability across our multi-tenant ecosystem. Clean Code & Architecture: Champion clean code principles (SOLID) and best practices. Write testable, maintainable, and efficient code. Cross-Functional Collaboration: Work closely with frontend developers to ensure smooth API integration with our Angular application. Required Qualifications BSc in computer science, or relevant field. 3 years of experience for writing and developing scalable .NET Core applications. Proven experience as a Backend Developer specializing in C# and .NET Core. Deep understanding of 3-tier architecture and experience building or maintaining multi-tenant applications. Solid hands-on experience with Microsoft SQL Server and Entity Framework (EF Core). Advanced SQL Skills: You must be highly capable of writing raw SQL scripts, profiling databases, and troubleshooting query performance bottlenecks. Solid experience implementing SSO and securing APIs using Identity Server (OAuth2/OpenID Connect). A strong engineering mindset with a relentless focus on writing clean, scalable code. Familiarity with modern frontend frameworks (specifically Angular) to effectively collaborate with frontend counterparts. .
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