During the mock interview, the interviewer and interviewee discuss a wide range of C# and .NET topics. At 00:00 the conversation begins with introductions and a review of the interviewee's experience. At 02:45 the discussion shifts to object‑oriented programming fundamentals, followed by polymorphism at 03:09, SOLID principles at 04:21, the Liskov substitution principle at 05:15, and a practical LSP example involving a dancing mechanic at 05:53. The author then presents another LSP example at 07:29, and the conversation moves to dependency injection at 10:15, including a lighthearted analogy about shoes at 12:31, detailed DI concepts at 12:31, life‑cycle management at 16:12, and differences in lifetimes at 17:19. At 21:12 the discussion turns to data types, followed by a digression into strings at 22:40, string interning at 23:53, delegates at 25:06, and a series of topics on message queuing starting with RabbitMQ at 26:29, exchanges at 26:42, the distinction between exchanges and queues at 27:28, exchange rules at 28:44, Mass Transit at 33:00, RabbitMQ channels at 33:48, headers exchanges at 34:36, and additional exchange details at 35:04. The conversation then covers Kafka at 36:11, topics and partitions at 36:26, partition characteristics at 36:46, asynchronous programming at 37:33, the essence of async/await at 39:43, state machines in async/await at 42:39, the concept of a state machine at 43:11, semaphores at 44:59, the need for locks at 45:28, .NET/OS threading levels at 45:40, ACID properties at 47:37, transactions at 47:50, transaction isolation levels at 48:47, MSSQL at 50:26, tracing at 51:43, SQL profilers and SQL intricacies at 53:13, a brief discussion about Head Hunter at 1:00:24, experience with Angular at 1:01:16, big directional streaming in gRPC at 1:01:54, streaming concepts at 1:02:15, a connection to SignalR at 1:03:04, an example from Tinkoff at 1:03:48, a brief talk about tests at 1:07:36, containerization at 1:09:34, a Q&A segment at 1:12:08, feedback at 1:13:03, discussion of test interviews at 1:13:55, architecture at 1:14:13, resume tips at 1:15:30, and a farewell at 1:17:33.
