We are seeking a skilled Middle / Senior .NET Engineer with deep hands-on expertise in Blazor Server and Razor components to design and build real-time interactive web applications. The successful candidate will deliver resilient performant server-side UI experiences using SignalR reusable component libraries and robust state management for concurrent users. Kindly note that this role supports remote work but only from within Ukraine. Responsibilities Design and build interactive web applications using Blazor Server and Razor components applying deep knowledge of Razor syntax templating and component lifecycle Implement SignalR-backed real-time UI interactivity managing circuit lifecycle and live data updates Design connection resilience and reconnection strategies handling circuit lifetime disconnects and graceful recovery Implement server-side state management and memory optimization to support high concurrency and scale efficiently across concurrent users Design and build reusable Razor component libraries that promote consistency maintainability and reuse across the application Apply dependency injection patterns correctly within component hierarchies and service lifetimes Implement authentication and authorization in Blazor Server including ASP.NET Identity OAuth and policy-based authorization Ensure code quality through testing and clear documentation of component contracts patterns and architectural decisions Requirements 4+ years of experience with .NET and strong experience with AWS 2+ years of experience with Blazor Expertise in Razor components including syntax templating engine and component lifecycle Proficiency in SignalR real-time UI and circuit management Advanced skills in connection resilience and reconnection strategies Advanced skills in server-side state management and memory optimization for concurrency Advanced skills in reusable Razor component library design Advanced skills in dependency injection within component hierarchies Advanced skills in Blazor Server authentication and authorization including Identity OAuth and policy-based authorization Expertise in C# / .NET English proficiency at B2 level or higher Nice to have Familiarity with ASP.NET Core Knowledge of Entity Framework Core Skills in frontend styling including CSS and component theming Familiarity with performance profiling and diagnostics in .NET Experience with unit/integration testing using xUnit and bUnit Familiarity with CI/CD pipelines We offer With us you can + Work on a flexible schedule remotely or from any of our comfortable offices or coworking spaces in Ukraine + Receive the necessary equipment to perform your work tasks + Change projects and technology stacks within EPAM + Gain experience in various business domains (Insurance E-commerce Healthcare Finance Travelling Media Artificial Intelligence and more) + Relocation opportunities may be available for eligible candidates depending on the role and openings at other EPAM locations + Participate in volunteer charity programs and communities (both technical and interest-based) We focus on your professional growth + You can plan your individual career path together with your manager + Receive regular feedback from colleagues + Improve your English for free with certified teachers (Speaking Clubs client interview preparation courses etc.) + Get the opportunity to undergo free training and certification in AWS GCP or Azure Clouds + Use the internal E-learn training program (18200+ specialized training and mentoring programs) + Access corporate accounts on LinkedIn Learning Get Abstract and other partner resources + Study at EPAM Solution Architecture School with the instructors who are practicing architects + Develop as a leader join Delivery Management Resource Management Leadership Essentials school and more + Participate in internal communities (500+ meetups technical discussions brainstorming sessions online events and conferences annually) What we offer + Vacation and sick leave (including a sick leave without a medical certificate) + A wide range of Voluntary Medical Insurance programs providing both medical treatment and various preventive options (including sports activities) + Medical insurance for family members at corporate rates + Company support during significant life events (childbirth or adoption marriage etc.) + Support for psychological comfort discounts on services from mental health specialists or coaches thematic training + E-kids program - a free programming language training program for EPAMers' children Kindly be advised that the set of benefits including learning certification and other opportunities may vary depending on the role you apply for. Our recruiter will be able to share more details about the specific opportunity during your general interview. EPAM strives to provide its global team of over 62350 professionals in more than 55 countries with opportunities for professional growth from day one of collaboration. Our colleagues are the source of EPAM's success so we value cooperation strive to always understand our clients' business and aim for the highest quality standards. No matter where you are you will join a dedicated diverse community that will help you realize your potential to the fullest.