Senior Software Engineer

Senior Software Developer – .NET Core & React.js Own the end-to-end build of a new, modern company website—from architecture and UI implementation to performance, accessibility, analytics, SEO, and deployment. You’ll translate requirements into a fast, secure, maintainable site and establish a lightweight component library/design system for future growth. Responsibilities : • Backend Development ( ASP.NET Core ): • Design, develop, and maintain RESTful APIs using ASP.NET Core . • Implement authentication and authorization mechanisms using JWT, OAuth, or IdentityServer. • Optimize database performance using Entity Framework Core (EF Core) with SQL Server/PostgreSQL. • Write efficient and secure backend logic, ensuring scalability and maintainability. • Integrate third-party services and APIs. • Frontend Development (React.js) : • Develop and maintain user-friendly React.js applications. • Implement state management using Redux, Zustand, or React Query. • Ensure responsive UI/UX with CSS-in-JS, Tailwind, or Material UI. • Optimize frontend performance and ensure cross-browser compatibility. • General Responsibilities: • Collaborate with product managers, designers, and other developers to define requirements and deliver high-quality software. • Perform code reviews and provide mentorship to junior developers. • Ensure best practices in coding, security, and DevOps. • Write unit and integration tests using xUnit, Jest, or Cypress. • Work with CI/CD pipelines (GitHub Actions, Azure DevOps, or Jenkins) for automated deployments. • Stay updated with emerging technologies and contribute to continuous improvements. Qualifications : • 10+ years of experience in full-stack web development. • Strong knowledge of C# and ASP.NET Core. • 5+ years of experience in React.js, TypeScript, and JavaScript (ES6+). • Experience with SQL Server, PostgreSQL, or NoSQL databases. • Fluent in Russian (spoken and written) with strong English communication skills. • Familiarity with Microservices architecture and Docker/Kubernetes. • Hands-on experience with Azure. • Strong understanding of SOLID principles and clean architecture. • Experience with unit testing and test-driven development (TDD). • Proficiency with Git and Agile development methodologies. • Preferred Qualifications: • Knowledge of Domain-Driven Design (DDD).