P · 01Software engineering
DFY concept prep
Node.js, AWS & System Design Interview Bootcamp
Interview-ready Node, AWS, and cloud system design—framed for how interviews actually go.
12 videos4 modulesSelf-paced
SKY
Free · self-paced · always-on3 programs live · 2 in the lab
Upskill with
depth —
not noise.
3+2
Programs · live + upcoming
27videos
Lessons recorded so far
211items
Written resources · DSA + design
₹0
Cost · forever, for everyone
01 · Programs
Five focused tracks.
One library, no detours.
Each program is a single thread of thinking, recorded once, watchable anywhere. Pick the one that matches what you're trying to learn—or stack them.
P · 02Software engineering
Architecture deep dive
System Design in Depth
Layer-by-layer architecture: edge, services, data paths, and capstone designs.
13 videos5 modulesSelf-paced
EMERALD
P · 03Software engineering
Data architecture
Database Architecture
Sharding, read replicas, and other data-at-scale patterns—more lessons will join this track over time.
2 videos1 modulesSelf-paced
VIOLET
P · 04AI engineering
Building with open-source models
Coding with open-source AI.
Local inference, RAG that actually works, agents with real tool-use, evals that aren't vibes-based, deploying it cheap. Filming Q2.
~10 videos planned4 modulesFilming Q2
VIOLET
P · 05Written track
Already live · in resources
DSA + System design, in writing.
51 system-design write-ups with Mermaid diagrams and 160 DSA problems split into statement, solution, tests. Open them like a book.
211 items59 topicsReading
DATABASE
02 · How it works
No login, no friction.
Just pick something and start.
01
Pick a program
Choose any program from the catalog. Each is a self-contained thread—no prerequisites between them except the obvious ones (you should know what an API is).
02
One lesson at a time
The viewer plays one video at a time. The outline on the side shows you where you are, what's next, and what's done—so you know if you're making progress.
03
Move freely between tracks
Watch a Sky lesson, jump to an Emerald one, come back next week. Nothing locks. No streaks. No nagging emails. The library is here when you want it.
03 · Also here
Written resources for the days you'd rather read.
Two libraries, both indexed by topic, both free. Open them like reference books.
Track 1
System design
51 deep dives · with Mermaid diagramsRequirements, components, flows. Read in order or jump by topic—the same way I'd whiteboard them.
Open system design →Track 2DSA · 160 problems
8 categories · statement / solution / testsTwo-pointer, trees, graphs, DP and more. Each problem has tabs so you can read, study, and stress-test independently.
Open DSA →Stop bookmarking.
Start watching.
The library doesn't care if you finish. It cares that you understand. Pick the program closest to what you're working on right now.