Krishna Kumar (@krishnapro_) header
Krishna Kumar (@krishnapro_) profile picture

Building - https://teapawt.net/t.co/6O21rW478a Data/software engineer · Real lessons from shipping AI & data pipelines · No hype, just what works DM for collabs

Remote
Joined September 2017
Photo by Krishna Kumar (@krishnapro_)Photo by Krishna Kumar (@krishnapro_)Photo by Krishna Kumar (@krishnapro_)Photo by Krishna Kumar (@krishnapro_)Photo by Krishna Kumar (@krishnapro_)Photo by Krishna Kumar (@krishnapro_)Photo by Krishna Kumar (@krishnapro_)
My first ever RentMyBanner customer is @sidequestsai, and their product is on my header right now. Your Own Stack puts Claude, GPT, Gemini, DeepSeek and Mistral in one chat, running on your own API keys. - Switch models mid-chat - See what each message costs before you send it - Your keys and chats stay on your device - Free with no message limit. The full app with sub-agents and agent teams is $9.99 once, no subscription. If you're paying for several AI subscriptions, give it a look. Link below.
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RentMyBanner got its first sale. It's simple: rent my X header for $10, for up to 24 hours. You also get a dedicated post about your product that stays up. A higher payment can replace the header sooner, but the post stays.
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Here's what the posts did. The shoutout for Your Own Stack got 185 impressions and 4 replies. The first-sale post got 100 impressions. The lesson is that "Drop URL" posts brought dozens of product replies and almost no buyers. Next I'm focusing on founders who are actually launching.
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The header is open again, and I'm opening 5 founding buyer spots at $5 (normally $10). You get my X header for up to 24 hours, plus a dedicated post about your product that stays up. DM for the Code rentmybanner.ink. 5 of 5 spots left.
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The most expensive sentence in AI coding right now: "Okay, so here's how this project works…" Typed for the fourth time today. What's the one line in your project's context file that saved you the most re-explaining?
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Old tech interview: Solve a problem nobody has at work, with no help. New tech interview: Fix a bug in a codebase you've never seen. Use any AI you want. Also, we'll reject you if it looks like the AI did it.
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Pick your interview: A) 45 minutes, one LeetCode hard, no AI. B) 60 minutes, a 200K-line codebase you've never seen, any AI you want, and you explain every change out loud. Which one are you more likely to pass?
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Hey @grok remove the apps that share user's personal data with third parties. 1. X 2. Whatsapp 3. Instagram 4. Telegram 5. LinkedIn 6. Snapshot
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What about @grok and @bot
Replying to @Warlock_Aditya
Telegram is the only one here that does not share users' personal data with third parties for advertising or commercial purposes.
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Where does AI-assisted coding end and vibe coding start? You read every diff: assisted. You read the tests and skim the diff: ? You only run the app and click around: ? You paste the error back in until it goes away: vibe. Where's your line?
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Honest question for senior engineers: Which bug taught you the most in your career? Would you have learned anything if an agent had fixed it in 30 seconds?
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Do you know about which model he talking?
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Code review in 2016: "nit: rename this variable." Code review in 2026: "Why does a CSS fix include a database migration?"
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The agent didn't fix the bug. It updated the test to expect the bug. CI is green. Everyone's happy. The bug now has 100% test coverage.
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Same bug. Two engineers. One reads the stack trace for 20 minutes. The other pastes it into an agent and approves a 600-line diff in 2. Who fixes it first? Who fixes it for good?
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Happy Diwali to you and your family. 🪔 #HappyDiwali2026
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Software engineer in 2016: “How do I build this?” Software engineer in 2026: “Why did the AI change 14 files to fix a button?”
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It took a month to make the first RentMyBanner sale. The product: 24 hours on my X banner. A dedicated product post that stays up. One actual buyer. Shipping gave me a product. Getting someone to pay gave me a different milestone.
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