I am a Senior Software Engineer with more than 20 years of experience developing enterprise applications using C#, .NET, SQL Server, ASP.NET Core, Angular, JavaScript, and cloud technologies. I've worked on large-scale systems used by tens of thousands of users, designed REST APIs, optimized SQL databases, integrated third-party systems, and led development teams. Recently I've also been studying AI technologies, modern cloud architectures, and Python. I'm looking for a role where I can contribute technically while continuing to learn modern technologies.
I'm looking for an opportunity to work on modern technologies, solve challenging problems, and contribute to a strong engineering team. I enjoy designing scalable software and learning new technologies such as AI, cloud services, and distributed systems.
A senior developer:
A programmer focuses on writing code.
A software engineer also considers:
I think about:
Hide implementation details.
private decimal salary;
class Animal { }
class Dog : Animal { }
animal.MakeSound();
Different implementations.
Expose only necessary functionality.
interface ILogger
{
void Log(string message);
}
Abstract Class | Interface |
Can have implementation | Usually defines a contract |
Constructors allowed | No constructors |
Fields allowed | No instance fields |
Single inheritance | Multiple interfaces |
Dependency Injection (DI) is a design pattern where objects receive their dependencies instead of creating them.
Instead of
var service = new EmailService();
use
public UserController(IEmailService service)
{
_service = service;
}
Benefits:
Single Responsibility Principle
One class should have one responsibility.
Open/Closed Principle
Open for extension.
Closed for modification.
Liskov Substitution
Derived classes should replace base classes.
Interface Segregation
Many small interfaces instead of one large one.
Dependency Inversion
Depend on abstractions.
Instead of
OrderService
creating
EmailService
inject
IEmailService
This allows changing implementation without changing OrderService.
Common ones:
It separates business logic from data access.
Instead of
context.Users.Add(user);
use
_repository.Add(user);
Advantages:
Creates objects without exposing creation logic.
ILogger logger = LoggerFactory.Create();
Allows changing algorithms at runtime.
Example:
Different payment methods.
Credit Card
PayPal
Bank Transfer
Each implements
IPaymentStrategy
Only one instance exists.
Example: Configuration, Logger, Cache
Code that is:
Improving internal code without changing functionality.
Examples:
Choosing a quick solution now that will require additional work later.
I look for:
Describe:
Situation
Task
Action
Result
Example:
We had a production issue where API response times increased from 200 ms to over 10 seconds. I analysed SQL execution plans, identified missing indexes, optimized the queries, and reduced the response time to under 300 ms.
Answer using STAR:
Situation
Task
Action
Result
Focus on communication.
Never blame others.
Choose one where you:
I first understand business priorities, estimate the work, communicate risks early, break the work into smaller deliverables, and focus on delivering the highest-value functionality first while maintaining code quality.
I bring extensive experience designing and delivering enterprise software, a strong foundation in .NET and SQL, the ability to solve complex technical problems, and a collaborative approach to working with teams. I enjoy learning new technologies and can quickly become productive while also mentoring others and improving engineering practices.
For behavioural questions, use the STAR method:
These 25 questions are only the beginning. For senior .NET positions, I recommend preparing across these topics as well:
Together, this would provide a handbook of 400–500 interview questions with concise, interview-ready answers that you can print and use for daily practice.