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ASP.NET Core Web API on IIS; Entity Framework Core (advanced: migrations, temporal tables, schema isolation)
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Domain-Driven Design in practice: aggregates, domain events, anti-corruption layers
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API design (RESTful, contract-first, versioned, paginated) including API Gateway / BFF patterns
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CQRS (MediatR), durable background jobs (Hangfire), real-time push (SignalR)
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Angular Frontend (5+ years)*
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Component architecture, lazy-loaded modules, reactive forms, RxJS
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State management with NgRx; real-time UI via SignalR/WebSocket
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Strong UX sensibility. Able to collaborate with operator SMEs and achieve mental-model parity with legacy screens
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SQL Server (5+ years)*
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Scalable schema design: high-volume tables, partitioning for growth, archival strategies, read/write separation
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Core design craft: normalization (3NF+), schema-per-service, indexing strategies (clustered, filtered, covering), constraints, temporal tables
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Performance optimization: Query Store, execution plan analysis, wait statistics, index tuning
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Distributed Systems & Messaging (5+ years)*
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Kafka/RabbitMQ at production depth: partitioning, consumer groups, exchange types, dead-letter handling, exactly-once semantics, clustering/HA
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Patterns: transactional outbox, saga/process manager, idempotent consumers
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Resilience: circuit breaker, retry with backoff, bulkhead isolation
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Event-driven architecture; contract-first API design