Senior .NET / Blazor Developer

We are seeking a Senior . NET / Blazor Developer with deep hands-on expertise in Blazor Server and Razor components to design and build real-time, interactive web applications. The consultant will deliver resilient, performant server-side UI experiences using SignalR, reusable component libraries, and robust state management for concurrent users. ResponsibilitiesDesign and build interactive web applications using Blazor Server and Razor components, applying deep knowledge of Razor syntax, templating, and component lifecycleImplement SignalR-backed real-time UI interactivity, managing circuit lifecycle and live data updatesArchitect connection resilience and reconnection strategies, handling circuit lifetime, disconnects, and graceful recoveryDeliver server-side state management and memory optimization to support high concurrency and scale efficiently across concurrent usersBuild reusable Razor component libraries that promote consistency, maintainability, and reuse across the applicationApply dependency injection patterns correctly within component hierarchies and service lifetimesImplement authentication and authorization in Blazor Server, including ASP. NET Identity, OAuth, and policy-based authorizationEnsure code quality through testing and clear documentation of component contracts, patterns, and architectural decisionsRequirementsExpertise in Blazor Server, Razor components (syntax, templating engine, component lifecycle), and C# / . NET with several years of professional experienceProficiency in SignalR real-time UI and circuit management, with skills in connection resilience and reconnection strategiesAdvanced knowledge of server-side state management and memory optimization for concurrencySkills in reusable Razor component library designCompetency in dependency injection within component hierarchiesBackground in Blazor Server authentication and authorization, including Identity, OAuth, and policy-based authorizationNice to haveFamiliarity with ASP. NET CoreKnowledge of Entity Framework CoreUnderstanding of frontend styling, including CSS and component themingSkills in performance profiling and diagnostics for . NETFamiliarity with unit and integration testing using xUnit and bUnitUnderstanding of CI/CD pipelinesWe offerWe gather like-minded people: Top tech minds driving innovation in AI, cloud and digital platform modernizationSupportive team and agile, startup-like cultureHybrid by design mode and opportunity to work remotely within PolandChance to work abroad for up to 60 days annuallyBusiness-driven relocation opportunitiesWe provide growth opportunities: Career development programsThought leadership, mentoring, soft skills and well-being programsCertification (Anthropic, Gemini, GCP, Azure, AWS)English classesWe cover it all: Stable payParticipation in the Employee Stock Purchase Plan with a 15% discountBenefits package (health insurance, multisport, shopping vouchers)Referral bonuses up to $2,000Offices featuring entertainment and relaxation zones, table tennis and football, free snacks, coffee and moreCorporate, social and well-being eventsPlease, note: Benefits listed above are available to employees onlyWe are open for working with Contractors. Terms of B2B cooperation agreements are agreed individuallyWe will reach out to selected candidates exclusivelyEPAM is global leader in AI transformation engineering and integrated consulting, serving Forbes Global 2000 companies and ambitious startups. With over thirty years of expertise in custom software, product and platform engineering, we empower our clients to become AI-Native enterprises, driving measurable value from innovation and digital investments.