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

ELEKS Software Engineering and Development Office is looking for a Middle Strong/Senior Full-Stack (.Net+React) Developer in Ukraine or Poland.ABOUT PROJECTThe 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.REQUIREMENTS5+ years of professional experience in software development using C# / .NET / .NET CoreStrong experience with ASP.NET Core Web API and ASP.NET Core MVCProduction experience with MS SQL ServerExperience with DapperHands-on Keycloak (or equivalent) and solid knowledge of OAuth2/OIDC/JWT, cookie security, CORS, CSRF mitigationRedis for caching and distributed coordinationStrong 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 alertingUpper-intermediate or higher level of EnglishNice-to-have:Temporal experience (or equivalent): designing idempotent activities, child workflows, error handling and retriesDeep experience with SQL Server high-availability and performance toolingMonorepo tooling and package management (pnpm, Yarn Workspaces, Nx)Accessibility, i18n, enterprise security/compliance familiarityPrior experience designing governance for micro-frontends and runtime orchestrationExperience with Telerik ReportingRESPONSIBILITIESDesign and implement backend services using ASP.NET Core Web API and MVC + Razor, applying SOLID principles, dependency injection, and layered architecturesBuild reliable workflows with TemporalUse Redis for caching, session storage, pub/sub, and distributed locksLead frontend architecture: React + TypeScript, Module Federation (host/remotes), RsPack bundling/optimizationEnsure CI/CD, containerization, Kubernetes deployment patterns, and observability (logging/tracing/metrics)Drive testing practices (unit, integration, E2E), code reviews, and mentor team membersTroubleshoot production incidents: performance tuning (SQL and frontend), memory leaks, and scaling issuesOriginally posted on Himalayas