Chikere

Full Stack .NET Developer 🇺🇸 • I build web apps and blog about software and web development • Support my work with a 🌮 at

[Chikere @chikeredev]

Which is better: start building a network or start building an audience? 🤔

[Chikere @chikeredev]

This is gold 🥇

[Steve Huynh @ALEngineered]

Four things I wish junior engineers knew earlier (that would have saved me years of stress):

1. You don't need to know everything before you start You only discover what you actually need to know after you begin. Perfectionism is procrastination in disguise.

2. Seniority means asking MORE questions, not fewer The more senior I became at Amazon, the more I admitted I didn't know things. It's the opposite of what you might think. Curiosity is a strength, not a weakness.

3. The most valuable skill isn't avoiding being blocked It's learning how to unblock yourself. Google, documentation, asking the right person—these are professional skills, not signs of incompetence.

4. Not knowing something isn't a character flaw It's just missing information. Information can be acquired. Intelligence can't be taught, but you already have that.

Bonus insight after 18 years in tech: You're doing better than you think. Stop being so hard on yourself.

I see too many talented junior engineers burn out because they set impossible standards for themselves. The goal isn't to know everything—it's to learn consistently and contribute meaningfully.

To every junior engineer reading this: your fresh perspective and willingness to question assumptions are exactly what experienced teams need. Don't let imposter syndrome convince you otherwise.

What's one piece of advice you wish you'd received as a junior engineer?

[Chikere @chikeredev]

@ALEngineered Thanks for the valuable insight, Steve! 😀

[Chikere @chikeredev]

@SoraiaDev @echap_max Well said, Soraia 😀Even $3MRR would be life-changing for me from where I sit. Keep working hard! 💪🏿

[Chikere @chikeredev]

@theandreiverdes Good for you and thanks for sharing, Andrei. 😀 Sounds like the company didn't want to grow and improve.

[Chikere @chikeredev]

@_annakulina You got this, Anna! 💪🏿

[Chikere @chikeredev]

@e_opore Thanks, Dhanian 🙏🏿

[Chikere @chikeredev]

I have completed Build a Spam Filter #freecodecamp
https://t.co/A2IfMPcuMW

[Chikere @chikeredev]

@elsleightholm Keep crushing it, Ellie! 💪🏿

[Chikere @chikeredev]

@jen_kersh Hi, Jennifer! 👋🏿 How's the indie dev life been treating you?

[Chikere @chikeredev]

Essential system design principles

[Shalini Goyal @goyalshaliniuk]

Imagine building a system that scales effortlessly, never crashes, and handles millions of users seamlessly. Sounds impossible? It’s not - it’s system design.

Every high-performing system follows a set of essential principles that make it secure, scalable, and resilient. Let’s explore them:

1. Observability & Monitoring – Like having a control room for your system, with logging, tracing, and real-time monitoring using tools like Prometheus and OpenTelemetry.

2. Security & Compliance – Protecting data with encryption, API authentication, and zero-trust architecture to keep systems secure.

3. Distributed Systems – The backbone of large-scale applications. Caching, message queues, and leader election mechanisms keep everything running smoothly.

4. High Availability & Fault Tolerance – Backup strategies that ensure systems stay up even when failures happen, using failovers, redundancy, and disaster recovery.

5. Microservices & Architecture – From REST vs. gRPC to service discovery and circuit breakers, these patterns help prevent cascading failures and improve flexibility.

6. Database Design – Choosing between SQL and NoSQL, data partitioning, replication, and consistency trade-offs to optimize performance.

7. Scalability & Performance – Load balancing, caching, and auto-scaling ensure that systems can grow without breaking.

Building a robust system isn’t just about writing code—it’s about designing for scale, security, and reliability. Master these concepts, and you’ll be ready to build systems that can handle anything.

[Chikere @chikeredev]

@goyalshaliniuk Amazing!

[Chikere @chikeredev]

There are a lot of unexplored non-tech spaces just waiting for apps to be built for them.

[Samuel Robertson @sm0olr]

I currently build software for churches and (you’re not gonna believe this) car washes. The car wash landscape is so destitute for good software that we’re automatically one of the best companies. It’s great.

[Chikere @chikeredev]

It's getting there, Cody! 😀

[Cody Mullins @codemullins]

The top ones are terrible btw

[Chikere @chikeredev]

@e_opore Thank you for sharing, Dhanian! 🙏🏿 Happy coding!

[Chikere @chikeredev]

Dull and robust code is the way.

[Scott Hanselman 🌮 @shanselman]

If your program is too exciting, you've lost everybody. You want to keep it dull and robust. That's engineering. https://t.co/Ukhs9s9odb

[Chikere @chikeredev]

@denicmarko Impressive! 👏🏿

[Chikere @chikeredev]

@e_opore My pleasure, Dhanian 🙏🏿 And thanks for adding me to your list.

[Chikere @chikeredev]

Full stack developer roadmap with AI integration included.

[Dhanian 🗯️ @e_opore]

FULL-STACK_DEVELOPER ROADMAP
│
├── 0_FOUNDATIONS
│ ├── Learn_HTML
│ ├── Learn_CSS
│ ├── Learn_JavaScript_ES6+
│ ├── Understand_HTTP_Requests
│ ├── Build_Project: "Personal_Portfolio_Site"
│ └── Build_Project: "Responsive_Landing_Page_for_AI_Tool"
│
├── 1_FRONTEND_ENGINEERING
│ ├── Pick_Framework
│ │ ├── React
│ │ ├── Next.js_15
│ │ └── Vue_3
│ ├── Concepts
│ │ ├── Components
│ │ ├── State_Management
│ │ ├── Routing
│ │ ├── Async_Data_Fetching
│ │ └── UI_Accessibility
│ ├── Build_Project: "AI_Image_Gallery_Frontend"
│ ├── Build_Project: "News_Aggregator_Using_Live_APIs"
│ └── Build_Project: "Dashboard_UI_with_Charts_and_Analytics"
│
├── 2_BACKEND_ENGINEERING
│ ├── Choose_Backend_Language
│ │ ├── Node.js_Express
│ │ ├── Python_FastAPI
│ │ └── Go_Fiber
│ ├── Learn
│ │ ├── REST_APIs
│ │ ├── GraphQL
│ │ ├── Middleware
│ │ └── Error_Handling
│ ├── Build_Project: "AI_Prompt_API"
│ ├── Build_Project: "RealTime_Notification_Server"
│ └── Build_Project: "File_Upload_Service_for_AI_Models"
│
├── 3_DATABASES_AND_STORAGE
│ ├── SQL
│ │ ├── PostgreSQL
│ │ └── MySQL
│ ├── NoSQL
│ │ ├── MongoDB
│ │ └── Firebase
│ ├── Cloud_Databases
│ │ ├── Supabase
│ │ └── PlanetScale
│ ├── Build_Project: "AI_Chat_History_Storage"
│ ├── Build_Project: "User_Profile_DB_with_Role_Based_Access"
│ └── Build_Project: "Vector_Store_Integration_for_AI_Search"
│
├── 4_AUTHENTICATION_AND_SECURITY
│ ├── Learn
│ │ ├── JWT
│ │ ├── OAuth2
│ │ ├── Role_Based_Access_Control
│ │ └── API_Rate_Limiting
│ ├── Build_Project: "Secure_Login_&_Signup_System"
│ ├── Build_Project: "Admin_Dashboard_with_Access_Control"
│ └── Build_Project: "API_Key_System_for_AI_Endpoints"
│
├── 5_AI_INTEGRATION_LAYER
│ ├── Learn
│ │ ├── How_to_Call_AI_APIs
│ │ ├── Prompt_Design
│ │ ├── Embeddings
│ │ └── RAG_(Retrieval_Augmented_Generation)
│ ├── AI_Services
│ │ ├── OpenAI_API
│ │ ├── Gemini
│ │ └── Local_LLMs_(Ollama)
│ ├── Build_Project: "AI_Generated_Content_Tool"
│ ├── Build_Project: "Smart_AI_Search_with_VectorDB"
│ ├── Build_Project: "AI_Code_Review_Assistant"
│ └── Build_Project: "AI_Automated_Email_Responder"
│
├── 6_FULLSTACK_INTEGRATION/
│ ├── Combine_Frontend_Backend_Database
│ ├── Learn
│ │ ├── API_Orchestration
│ │ ├── RealTime_Data_(WebSockets)
│ │ └── Server_Actions_(Next.js_15)
│ ├── Build_Project: "FullStack_Task_Manager_with_AI_Task_Suggestions"
│
├── 7_DEVOPS_AND_DEPLOYMENT
│ ├── Hosting
│ │ ├── Vercel
│ │ ├── Render
│ │ ├── Netlify
│ │ └── AWS_EC2
│ ├── Learn
│ │ ├── Docker
│ │ ├── CI_CD
│ │ ├── Environment_Variables
│ │ └── Load_Balancing
│ ├── Build_Project: "Deployed_AI_API_on_Cloud"
│
├── 8_RELIABILITY_AND_SCALING
│ ├── Caching
│ │ ├── Redis
│ ├── Monitoring
│ │ ├── Grafana
│ │ └── Sentry
│ ├── Build_Project: "Caching_AI_Responses_with_Redis"
├── 9_ADVANCED_ARCHITECTURE
│ ├── Explore
│ │ ├── Microservices
│ │ ├── Event_Driven_Systems
│ │ ├── Webhooks
│ │ └── Serverless_Functions
│ ├── Build_Project: "Event_Driven_Email_Automation_System"
│
└── 10_CAPSTONE_PROJECT
├── Build_Project: "Full_AI_SaaS_Platform"

Grab this Ebook to become a Full Stack Developer:
https://t.co/vAmL2nrSCL

[Chikere @chikeredev]

@InterviewsChat Agreed. Thanks for sharing as I'm going to use this list for my own prep work.

[Chikere @chikeredev]

List of C# interview questions

[Anton Martyniuk @AntonMartyniuk]

𝟱𝟬 𝗤𝘂𝗲𝘀𝘁𝗶𝗼𝗻𝘀 𝗧𝗼 𝗣𝗿𝗲𝗽𝗮𝗿𝗲 𝗳𝗼𝗿 𝗖# 𝗜𝗻𝘁𝗲𝗿𝘃𝗶𝗲𝘄

Real questions, not generated by AI 👇

1. Difference between readonly vs const

2. What is a sealed keyword used for?

3. Name all the access modifiers for types

4. Difference between interface and abstract class

5. When is a static constructor called?

6. How to create an extension method?

7. Does C# support multiple class inheritance?

8. Explain boxing and unboxing

9. What is heap and stack?

10. Difference between string and StringBuilder

11. How to create a date with a specific timezone?

12. How to change current culture?

13. What is the difference between HashSet and Dictionary?

14. What is the purpose of the method ToLookup?

15. Does LINQ Cast<T> method create a new object?

16. Explain deferred execution in LINQ

17. How does the ImmutableList work?

18. What are the benefits of using Frozen collections?

19. Name thread safe collections

20. How to perform a lock for asynchronous code?

21. Name all the ways for creating a new thread

22. How to execute multiple async tasks at once?

23. Explain Inheritance vs Composition

24. Difference between class vs record vs struct

25. What are ref structs used for?

26. Name the two forms of records

27. What is "with" keyword used for?

28. What is the purpose of Primary Constructors?

29. Explain how Nullable Reference Types work

30. Do switch expressions have any return type limitations?

31. What is yield return used for?

32. How many generations does the Garbage Collector have?

33. What is Interlocked class user for?

34. What is the code generated by compiler for auto properties?

35. How is Polymorphism implemented in C# ?

36. How is Encapsulation implemented in C# ?

37. What is the difference between ref and out parameters?

38. How does the using statement work ?

39. What is delegate and how is it used?

40. Explain method overloading and overriding

41. Difference between IEnumerable and IQueryable

42. What are expression trees in LINQ?

43. How does exception handling work in C#?

44. Name all the ways to rethrow an exception

45. Explain the generics

46. What is the difference between Auto and Manual reset events?

47. How to lock async code?

48. Difference between volatile and Interlocked

49. Name all ways to create a Thread

50. Difference between Task(.)Run and TaskFactory(.).StartNew

📌 Join 𝟭𝟴,𝟬𝟬𝟬+ developers and download my free C# Roadmap that contains resources for learning all of these topics:
https://t.co/AOjgbdDQr8

What question from this list you didn't know? Leave a comment down below 👇

——

♻️ Repost to help your network prepare for the C# interview

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