Kalpesh Khairnar

I build. I break. I fix. I learn.
React • TypeScript • Java • Spring Boot
Sharing the journey of becoming a better engineer.

[Kalpesh Khairnar @async_mind]

Hot take: Tutorial completion doesn’t make you a better developer.

Building something, getting stuck, and debugging it does.

Agree or disagree?

[Kalpesh Khairnar @async_mind]

AI can write the code.

But can you explain why that code should exist?

The better AI coding tools get, the more important software design, debugging, and decision-making become.

Are AI coding tools making developers better engineers or just faster coders? 👀

[Kalpesh Khairnar @async_mind]

🚨 Developers, honest question:

If Claude Code and Codex went down for the next 7 days…

Could you still debug, design, and ship your work?

AI makes us faster.

But if removing it makes us helpless, we’re not becoming better engineers, we’re becoming dependent. 🧠

[Kalpesh Khairnar @async_mind]

Building a real-world app with this stack:

- React + TypeScript
- Spring Boot
- PostgreSQL
- Spring Security + JWT
- Flyway
- TanStack Query
- Zustand
- Zod + React Hook Form
- AI coding tools

Learning architecture by building, breaking, and fixing. 🚀

[Kalpesh Khairnar @async_mind]

Building a real app taught me something tutorials didn't:

Architecture isn't about creating more folders.

It's about knowing where a change belongs.

I'm learning this the hard way while building a React + Spring Boot application.

[Kalpesh Khairnar @async_mind]

@pfernan95dev I use Brevo for email. It has 300 emails per day

[Kalpesh Khairnar @async_mind]

Is Claude getting dumber day by day?

Lately, I’ve noticed it:
• More confident wrong answers
• Forgetting context
• Struggling with tasks it handled easily before

Maybe it’s just me or are you seeing it too?

Claude users, what’s your experience?

[Kalpesh Khairnar @async_mind]

@mellowyak Exactly. An agent guessing the fix is how things break silently. Flag the contradiction first.

[Kalpesh Khairnar @async_mind]

Your AI coding results are often limited by one thing: context.

Bad context -> generic solution.
Good context -> solution that actually fits your architecture.

Your README, conventions, existing code, constraints and tests matter.

[Kalpesh Khairnar @async_mind]

38% off ❌️
264% price hike ✅️

[Kalpesh Khairnar @async_mind]

Paid ₹1,704 for this SSD in Oct 2022.

Just checked the price today…

₹6,199. 😭

That’s a ₹4,495 price hike for the same SSD.

Tech prices are getting crazy.

[Kalpesh Khairnar @async_mind]

Same budget. Two very different upgrades.

📱 iPhone Duo
💻 MacBook

You can only pick one.

What are you buying? 👀

[Kalpesh Khairnar @async_mind]

Most developers are using AI backwards.

My workflow is:

Understand the problem
Plan the solution
Give AI the context
Let it implement
Review every important change
Test it
Refactor

The goal isn't to make AI write more code.

It's to make good engineering decisions faster.

[Kalpesh Khairnar @async_mind]

We need to take AI safety seriously.

AI is moving incredibly fast, but are we moving too fast?

Building powerful AI is exciting, but we also need to think about the risks and responsibilities that come with it.

[Jacob Coxon @hilbertspaess]

I resigned from Anthropic today. I spent the last three years doing pretraining research at both OpenAI and Anthropic. Neither company is acting responsibly. They are racing straight to self-improving superintelligence and gambling with our lives. More thoughts below.

[Kalpesh Khairnar @async_mind]

We went from:

"Google it."

to:

"Ask ChatGPT."

to:

"Let Claude/Codex build it."

The next developer advantage won't be typing code faster.

It'll be knowing what should be built, and whether the AI built it correctly.

Coding is changing.

Engineering isn't.

[Kalpesh Khairnar @async_mind]

AI coding tools aren't replacing developers.

They're exposing who actually understands the code.

Claude Code
Codex
Cursor
Gemini CLI
Copilot.

The tool matters less than how you use it.

Great developers know what to ask, what to reject, and what to verify.

[Kalpesh Khairnar @async_mind]

Your React component is probably doing too much.

If one component handles:
- API calls
- form validation
- business logic
- filtering
state management
-rendering
-error handling

it's not really a component anymore.
It's an entire application wearing JSX.
Split responsibilities.

[Kalpesh Khairnar @async_mind]

You're probably putting too much into React state.

Ask: "Does this value need to trigger a render when it changes?"

If not, it might not belong in state.

Not everything that changes needs useState.

[Kalpesh Khairnar @async_mind]

Unpopular opinion:

Barrel files ("index.ts") files aren't just for convenience.

They're a contract.
A public API for your feature.

Once I enforced them, random cross-imports disappeared, and refactoring stopped being terrifying.

Small habit.
Big payoff.

[Kalpesh Khairnar @async_mind]

@HermesShield So true. Intelligence is cheap now, safe execution isn't.

[Kalpesh Khairnar @async_mind]

I’m a Claude Code user, and honestly, I’m curious 👀

What AI coding tool do you think can actually beat Claude Code?