HRMS, Middle Strong/Senior Full-Stack (.Net+React) Developer, JR129, JR130 at eleks

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