1st lesson free
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Azeem
- Price $102
- Answer 1h
$102/h
Contact
1st lesson free
- Computer Programming
- JavaScript
- SQL
- C#
- C#.NET
Senior Backend Engineer with 8 years in C#/.NET and AWS runs realistic FAANG-style coding and system design mock interviews, with detailed feedback and a personalized preparation plan
- Computer Programming
- JavaScript
- SQL
- C#
- C#.NET
Lesson location
About Azeem
I'm Muhammad Azeem Ullah, a Senior Software Engineer with 7+ years of experience building backend systems in C#, .NET Core and Akka, deployed on AWS with Docker and Kubernetes.
Since 2020 I've built backend server features for large-scale mobile game projects, including Project Moonshine, a game inspired by the Mafia franchise. Before that I worked on mobile game servers in Node.js. Along the way I've load-tested servers for high traffic, built CI/CD pipelines (Jenkins, GitHub Actions, AWS CodePipeline), and integrated payment gateways such as Stripe and PayFast.
Game backends are an unforgiving environment: thousands of concurrent players, real-time state, traffic spikes at launch, and zero tolerance for lost purchases. The problems I solve every day are the same ones Big Tech interviews ask about: scalability, concurrency, distributed state, caching, data consistency, performance and reliability.
I know where strong candidates lose points: they jump into code before clarifying, they design without numbers, they can't defend a trade-off when pushed, or they go quiet when a follow-up gets hard. My sessions are demanding on purpose. I'll push back and ask "what happens when this fails?" the way a real interviewer would. Then you get structured, specific, honest feedback, not "looks good".
I hold a BS in Software Engineering from the University of the Punjab.
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About the lesson
- Primary School
- High School
- Year 10
- +12
levels :
Primary School
High School
Year 10
Year 11-12
Year 12
TAFE
Adult
Diploma/Certificate
PhD
Early childhood education
Beginner
Intermediate
Advanced
Professional
Kids
- English
All languages in which the lesson is available :
English
FAANG-Style Backend & System Design Mock Interview: 60 minutes, real pressure, real feedback.
Practice the interview before the interview. I run realistic, demanding simulations of Big Tech backend engineering interviews, based on 7+ years of building and scaling production game backends in C#, .NET Core and Akka on AWS.
WHAT WE COVER (tailored to your target role)
- Coding and problem-solving: data structures, algorithms, complexity, clean code under time pressure
- System design: requirements, capacity estimates, APIs, data modeling, scaling, failure modes
- Distributed systems: consistency, replication, partitioning, queues, idempotency, the actor model
- Databases (SQL and NoSQL), caching with Redis, API design (REST, gRPC)
- AWS/cloud architecture, Docker and Kubernetes
- Concurrency, performance and C#/.NET deep-dives (async/await, threading, memory)
A TYPICAL 60-MINUTE SESSION
- 0-3 min: quick intro, then straight into interview mode
- 3-23 min: coding problem with follow-ups that change the constraints
- 23-48 min: system design, where I push on bottlenecks and trade-offs like a real interviewer
- 48-55 min: rapid-fire backend questions on your weak areas
- 55-60 min: live debrief with your top strengths and top gaps
WHAT YOU RECEIVE WITHIN 24 HOURS
- A written scorecard across 8 dimensions, calibrated to your target level
- An overall hire / no-hire style signal so you know where you stand
- Specific weaknesses, with the exact moments from your interview and what a strong answer looks like
- A personalized 2-6 week preparation plan
LEVELS
- Entry-level / new grad: fundamentals, first system design, interview habits
- Mid-level: medium-hard coding, full system design with estimates
- Senior: production-quality code, candidate-driven design, deep technical follow-ups
- Staff: ambiguous large-scope design, multi-region architecture, migrations and technical leadership
I also teach C#, .NET, backend development, SQL and AWS for professionals who want to level up.
Sessions are online, with a shared code editor and whiteboard. You can code in C#, Java, Python, JavaScript/TypeScript, Go or C++.
Please note: I'm an independent engineer. The mock interviews follow publicly known Big Tech interview formats and are not affiliated with, or endorsed by, any company.
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Rates
Price
- $102
Pack prices
- 5h: $510
- 10h: $1020
free lessons
The first lesson with Azeem will allow you to get to know each other and discuss your needs for future lessons.
- 1hr
online
- $102/h
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