How did you store time series data: using a regular PostgreSQL or a specialized Time Series DB? Why?
What did the task cycle look like? Did you have to communicate directly with the customer?
Did you understand the team composition correctly: four frontend developers and one layout designer?
Tell about one of the recent interesting or complex tasks.
Explain the difference between reference and value types.
What are your salary expectations?
What types of indexes have you used in PostgreSQL? Why is GIN index used for full-text search instead of B-tree?
What is the difference between multithreading and asynchrony?
What keywords in a method allow it to be overridden in C#?
What is IDisposable used for?
What is a Leaky Abstraction?
Is it possible to make DbContext (EF Core) a Singleton? What are the advantages and disadvantages?
What additional criteria for a company are important to you when searching?
How does List differ from IEnumerable?
A colleague's task has come to your Code Review What problems do you see in the code?
What lifetimes exist in .NET DI and why should Redis ConnectionMultiplexer be registered as a Singleton?
If a method is marked async but contains no await — what will happen?
What is the difference between ref and out? What does the in parameter mean?
What does yield return mean?
What will be output in C# code with nested locks on the same syncObject? Will there be a deadlock and why?