Stop memorizing. Start designing systems.
You can grind 500 LeetCode problems and still freeze when the interviewer says "Design Instagram." This 8-week live cohort fixes that — you learn each building block in the right order, then immediately apply it through guided design discussions and real-world walkthroughs until it becomes instinct.
Built by an engineer who's designed systems at scale · 16 modules · 218 real-world problems · 300+ diagrams
Most engineers don't fail system design because they're not smart. They fail because nobody taught them the building blocks in the right order.
"I blank out at the whiteboard."You know the words — sharding, caching, Kafka — but can't assemble them under pressure into a coherent design.
"I watched 40 hours of videos."…and still can't drive a design yourself. Watching isn't doing. Passive learning never transfers to the interview.
"I just memorize template answers."The moment the interviewer changes one constraint, the template breaks and so does your confidence.
"I'm a senior dev but interviews humble me."You ship features daily, yet open-ended design questions expose gaps you never had to fill on the job.
Every concept is followed by hands-on application — that's how intuition is built.
One core concept at a time — taught in a deliberate sequence so each new idea builds on the last. No random topic-hopping.
The same session, we apply that block through a guided discussion and design walkthrough of a real system — turning theory into intuition while it's fresh.
As your toolkit grows, the discussions get richer — we compose multiple blocks into complete real-world architectures, together.
By the final weekends you design large, open-ended systems (Slack, Uber, Netflix scale) end-to-end, confidently.
16 concept modules across 8 weekends · Sat & Sun, 9AM–1PM (4 hours, 15-min break). Tap any weekend to expand. Every weekend = learn the blocks, then apply them through guided design discussions & walkthroughs.
The mental model + how data actually moves
Designing the contract + the plumbing around it
/pay endpoint to prevent double-charge on retryPicking and shaping the source of truth
Making it fast without melting the database
Decoupling services and processing streams
The hard part — agreement under failure
Scaling out, locking down, seeing inside
Put it all together and perform under pressure
By week 8, system design stops being scary and starts being a structured conversation you lead.
No upsells. One price, full access.
Every Sat & Sun for 8 weeks, fully recorded if you miss one.
Full access to the HelloSDE problem bank to keep drilling.
Every concept distilled with 300+ visual diagrams for revision.
Real interview simulation with structured feedback & scoring.
Direct doubt-clearing over the cohort group — never stay stuck.
Design a full system end-to-end and get it reviewed 1:1.
"The learn-then-apply format is the only thing that made design click for me. I went from dreading the round to actually enjoying it."
"I'd watched every YouTube playlist. This was different — I was forced to design every weekend. Cleared my Staff loop two months later."
"The roadmap sequence is genius. Each weekend built on the last, so by week 8 the 'big' problems felt easy."
"Worth every rupee. The estimation and tradeoff drills alone changed how I talk in interviews."
Small cohort · personal attention · limited seats.
…you could be the candidate who calmly draws the architecture while everyone else recites templates. The next batch starts July 18.