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).