The salary upgrade path for a .NET developer in the AI era. Not just code — the judgment, architecture and trade-off thinking that companies pay Senior, Staff and Architect salaries for.
AI made raw CRUD coding a commodity. What survives — and what companies pay real money for — is the ability to design systems, weigh trade-offs, and make decisions before a single line is written. That skill is called system design, and it is the gate to Senior+ salaries.
Senior and Staff interviews are conversations about architecture, not coding tests. Failing the system design round is the #1 cause of "down-leveling" — 10 years of experience offered a mid-level salary.
SENIOR / STAFF / ARCHITECTCopilot writes the endpoint. It does not decide the cache strategy, the queue topology, or when microservices are a mistake. Architecture is the survivor skill of the AI era.
AI-PROOFBanking, healthcare, government run on .NET. The market wants engineers who modernize .NET Framework → .NET 10 and build cloud-native systems on Azure — with real architecture skills.
ENTERPRISE STABLESystem design + modern .NET (10, Minimal APIs, EF Core) + Azure + AI integration (Microsoft.Extensions.AI) + clear communication. This course covers it all, lesson by lesson.
12-MONTH TRACKEvery system design question is built from these building blocks. We learn them one at a time, then apply them in full interview-style lessons.
Vertical vs horizontal. Stateless design, consistent hashing.
LEARNED IN L1Redis + IDistributedCache, cache-aside, TTL, invalidation.
LEARNED IN L1SQL vs NoSQL, indexes, read replicas, sharding.
NEXTRabbitMQ / Kafka / Azure Service Bus, MassTransit, event-driven.
COMINGSLA, failover, retries, Polly, circuit breakers, idempotency.
COMINGMonolith vs microservices vs modular monolith. CQRS, DDD.
COMINGLLM features in .NET: Microsoft.Extensions.AI, .NET Aspire, RAG chatbot.
COMINGSystem design is the engine. Cloud and AI skills are the fuel. This is the order we go in.
The 7 concepts above. Practice on classic questions: URL shortener, chat app, Twitter feed, payment system, rate limiter.
.NET 10, Minimal APIs, EF Core optimization, MassTransit, Polly, Serilog, OpenTelemetry, HybridCache, Dapper.
Docker, Azure App Service, Functions, Service Bus, Redis Cache, SQL Database, AKS basics. Every diagram must be deployable.
Microsoft.Extensions.AI, LLM features in C#, .NET Aspire, RAG. Market premium: ~16% for devs who ship AI features.
Mock system design interviews, trade-off drills, communication coaching. System design interviews are conversations — we practice the conversation.
Each lesson is a self-contained HTML page: objectives, interview conversation, capacity estimation, architecture, deep dives, C# code, trade-offs, homework, quiz.
LESSON 01Hashing & base62, SQL schema, Redis caching, 301 vs 302, rate limiting — the classic first interview question, taught with C#.
WebSockets, message fan-out, presence, message ordering.
Timeline caching, fan-out on write vs read, precomputed feeds.
Strong consistency, idempotency keys, distributed transactions.
Token bucket, Redis counters, sliding window, global limits.
We don't memorize diagrams. We practice the senior conversation.
Know exactly what you will be able to do.
Ask the questions a senior asks first.
Back-of-the-envelope numbers.
Components, flows, diagrams.
3–5 subsystems with trade-offs.
Real .NET 10 implementations.
Practice + interview drills.
Test what stuck.