HRMS, Middle Strong/Senior Full-Stack (.Net+React) Developer, JR129, JR130, JR183, JR182, JR199

ELEKS Software Engineering and Development Office is looking for a Middle Strong/Senior Full-Stack (.Net+React) Developer in Ukraine or Poland. ABOUT PROJECT The project, funded by the US Government, involves the development of a Human Resources System for various ministries in a Middle Eastern country. This initiative aims to improve the efficiency and effectiveness of human resource management across multiple departments. REQUIREMENTS 5+ years of professional experience in software development using C# / .NET / .NET Core Strong experience with ASP.NET Core Web API and ASP.NET Core MVC Production experience with MS SQL Server Experience with Dapper Hands-on Keycloak (or equivalent) and solid knowledge of OAuth2/OIDC/JWT, cookie security, CORS, CSRF mitigation Redis for caching and distributed coordination Strong React + TypeScript experience (hooks, Suspense, patterns for large apps) Unit & integration testing for .NET and frontend; E2E testing (Cypress/Playwright) Logging, distributed tracing (OpenTelemetry), metrics and alerting Upper-intermediate or higher level of English Nice-to-have: Temporal experience (or equivalent): designing idempotent activities, child workflows, error handling and retries Deep experience with SQL Server high-availability and performance tooling Monorepo tooling and package management (pnpm, Yarn Workspaces, Nx) Accessibility, i18n, enterprise security/compliance familiarity Prior experience designing governance for micro-frontends and runtime orchestration Experience with Telerik Reporting RESPONSIBILITIES Design and implement backend services using ASP.NET Core Web API and MVC + Razor, applying SOLID principles, dependency injection, and layered architectures Build reliable workflows with Temporal Use Redis for caching, session storage, pub/sub, and distributed locks Lead frontend architecture: React + TypeScript, Module Federation (host/remotes), RsPack bundling/optimization Ensure CI/CD, containerization, Kubernetes deployment patterns, and observability (logging/tracing/metrics) Drive testing practices (unit, integration, E2E), code reviews, and mentor team members Troubleshoot production incidents: performance tuning (SQL and frontend), memory leaks, and scaling issues