Aninda-Tech Learner

Do them WITHOUT peeking solutions first. You'll feel the "aha" moment when you realize why O(n²) loops kill performance. Who's grinding one today? Reply "HASH" if you're starting — I'll drop my favorite hash map trick in replies! #DSA #CodingJourney #LearnInPublic

Master hash maps first (O(1) lookups are life-changing). Solve these 3 easy problems this week: ▶️Two Sum ▶️Contains Duplicate ▶️Valid Anagram

DSA isn't just interview torture… It's the reason your code doesn't crash when 1 million users hit it at once. I used to hate it — skipped arrays/strings for "cool" projects. Ended up with slow, buggy mess that no one could scale.

If you are student or beginner who’s tired of feeling stuck… Join this journey. Reply “JOURNEY” and I’ll: • Send my free DSA + AI 30-Day Starter Kit (10 prompts + tracker) • Follow you back • Check your progress weekly No guru BS. Just real progress. Who’s in? 🚀

March 2026 changed the game: Big Tech is spending $650B+ on AI infra but still asking DSA + “show me an agent you built” in interviews The devs who combine both are winning. The ones who only copy-paste prompts? Getting replaced. You don’t need to be a genius — just a system.

AI can write code in 8 second but it still can’t think like a real developer. I learned this the hard way as a student. Wasted 4 months copying GPT-5.4 outputs and staying stuck. Then I built a simple system: DSA first → AI second → ship weekly. Here’s exactly how it works 👇

Beginners in AI era vs Me I use AI for everything I still do 1 DSA problem daily before using AI One of these devs will be employed in 2027… Reply “EMPLOYED” if you’re doing daily DSA

@paulg looking awesome

I went to visit Subdial in London. Cool place with some good watches. I bought something so strange that till I saw it I'd never have believed it existed: an Ellipse pocket watch. I kid you not.

@GergelyOrosz It is truly incredible, this only occurred due to their patience.

How did a tiny team of 30 engineers build WhatsApp, more than a decade ago? From Jean Lee, engineer #19 at the company. Timestamps: 00:00 Intro 01:39 Early years in tech 06:18 Becoming engineer #19 at WhatsApp 13:53 WhatsApp’s tech stack 18:09 WhatsApp’s unique ways of working 25:27 Countdown displays and outages 27:07 Why WhatsApp won 28:53 The Facebook acquisition 33:13 Life after acquisition 39:27 Working at Facebook in London 44:07 Transitioning to management 47:27 Performance reviews as a manager 53:29 After Facebook 58:53 AI’s impact on engineering 1:02:34 Jean’s advice to new grads and startups 1:06:45 Empowering employees 1:08:17 Book recommendations Watch or listen: • YouTube: youtu.be/5Kn32cIWPSY • Spotify: open.spotify.com/episode/56bXJZ… • Apple: podcasts.apple.com/us/podcast/bui… Brought to you by: • @statsig  – ⁠ The unified platform for flags, analytics, experiments, and more. statsig.com/pragmatic • @SonarSource – The makers of SonarQube, the industry standard for automated code review. sonarsource.com/pragmatic/ • @WorkOS – Everything you need to make your app enterprise ready WorkOS.com Three interesting observations from this episode: 1. WhatsApp had no code reviews after in-place. WhatsApp cofounder, Brian Acton, reviewed the very first pull request of each new hire, and after that, there were no more code reviews. Jean recounts how Brian reviewed her debut PR in extreme detail. This first (and only!) review set the bar high, and she wrote code to that standard from then on. 2. WhatsApp had close to zero formal processes. WhatsApp had no Scrum, no Agile, no TDD (test driven development), and no formal code reviews beyond the first commit. In contrast, Skype had 1,000 engineers and mandatory Scrum training, but WhatsApp still outcompeted it and won. Jean’s response to hearing of all the formal processes Skype used in order to execute faster: “I’m surprised to hear they thought they were shipping faster because of it.” Perhaps process is often a substitute for trust, not quality?” 3. Saying “no” to features was a competitive advantage. WhatsApp’s CEO, Jan Koum, rejected 99% of feature requests from the team. While competitors shipped dozens of shiny, new features, WhatsApp ruthlessly prioritized reliability and simplicity. Jan repeatedly told the team what the mission was. “I want a grandma living in the countryside to be able to use our app”, he said.

If you’re ready to stop fearing AI and start using it, reply “650B”. I’ll DM you my exact 30-day roadmap.

Simple way to start in the AI era: → Spend 30 minutes daily solving 1 DSA problem → Then ask AI to turn that logic into a real project This is how I built my first AI agent last week.

Big Tech is dropping $650 BILLION on AI infrastructure by 2026 — and many devs are still scared of DSA.

When you finally understand DSA after 6 months… 😭➡️😎 AI era hack: Let AI teach you DSA, then you teach it real projects. Reply “DRAKE” if DSA finally clicked for you. #DSA #Coding #BuildInPublic #AI

Save this thread. Reply “TIPS” and I’ll send you my full Notion template + prompts. Let’s grow together 🚀

5. Daily habit: 1 LeetCode → 1 AI project → 1 tweet about it (#LearnInPublic)

I wasted 4 months in 2025. Here are the 7 tips that actually work in March 2026 AI world 👇