Q1. What is the difference between a symbol and a string?
A `Symbol` is an immutable, interned identifier such as `:name`. A `String` is a mutable sequence of characters such as `"name"`. Symbols are stored once, so repeated use...
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Search and filter frequently asked interview questions across technical, programming, and behavioral domains. Tailor your interview preparation by difficulty for freshers or experienced developers (11 available).
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Q2. Describe a time you disagreed with a teammate or manager.
Use STAR and show respect plus results. Situation: "A teammate wanted to ship a caching layer right before a major release." Task: "I was responsible for release stabilit...
Q3. What is the difference between val and var?
`val` declares a read-only reference that cannot be reassigned after initialisation. `var` declares a mutable reference that can be reassigned. ```kotlin val name = "Ada"...
Q4. Explain virtual memory and paging.
Virtual memory gives each process the illusion of a large, contiguous address space, independent of physical RAM. The CPU's memory management unit translates virtual addr...
Q5. When do you choose synchronous versus asynchronous communication?
Synchronous calls (HTTP/REST, gRPC) are simple, easy to reason about and return results immediately, which suits queries and request-response workflows. The downside is t...
Q6. Why does mutating arrays or objects sometimes not update a Svelte 3/4 component?
In Svelte 3 and 4 reactivity is triggered by assignment to the variable the compiler tracks. Mutating an array or object in place does not notify the compiler because no ...
Q7. When should you escalate a customer issue, and how do you do it well?
I escalate when the issue exceeds my authority, requires specialist knowledge, or risks breaching an SLA or damaging the relationship. Good escalation is early and comple...
Q8. How do you align engineering, design and business stakeholders?
I align people through a shared, visible goal and a clear decision making process, not through endless meetings. I start by understanding what each group cares about. Eng...
Q9. How do you say no to a customer request you cannot fulfil?
I say no to the request, not to the customer. First I make sure I understand what they actually need, because a request is often a proposed solution rather than the real ...
Q10. Describe a time you dealt with a customer who was wrong but insisted otherwise.
I separate the relationship from the facts. Being right is not the goal; resolving the issue is. I listen fully and acknowledge their perspective: "I can see why you read...