We are seeking a Senior Software Engineer, Multi-Platform with strong expertise in C#/.NET backend development and React-based frontend engineering. The role focuses on designing and building secure, scalable, enterprise-grade web applications using modern architectural practices. The successful candidate will work across the full technology stack, contributing to both user-facing applications and backend services in a multi-tenant environment. Experience building cross-platform mobile applications (e.g., React Native) is considered an advantage. Responsibilities Develop and maintain web applications using React, TypeScript, C#, and .NET. Build scalable RESTful APIs and backend services. Design reusable frontend components and responsive user interfaces. Implement secure authentication and authorization mechanisms. Collaborate with cross-functional teams to deliver high-quality software solutions. Participate in code reviews, testing, and CI/CD deployment processes. Ensure applications meet performance, security, and reliability standards. Requirements Strong experience with React, TypeScript, C#, and .NET development. Experience building RESTful APIs and data-driven web applications. Familiarity with relational databases and ORM frameworks. Knowledge of clean architecture, testing practices, and version control (Git). Ability to work across frontend and backend development. Experience with React Native or cross-platform mobile development is an advantage.