One path, not a catalog
Every step unlocks the next. No wandering through fifty half-finished courses.
Developer Learning OS
Learn.Build.Ship.
Build real software. Not tutorial projects.
An interactive world where developers level up by shipping production work — with AI mentorship, live quests, and a path that only unlocks when you earn it.
You do not learn software by watching it.
01LearnConcepts in context
02BuildReal product pressure
03ShipLive on a domain
04ProductionOwn the system
Why Pelajarin
A different contract with your time.
100%
of the path ends in production
AI that refuses the answer
The mentor asks the question that unsticks you. You write the fix.
Proof you can send
Capstones end on live URLs. Recruiters open links, not PDFs.
Interactive path
The map only opens when you earn it.
From first HTML tag to CI/CD, Workers, and a live capstone — every node is a skill you can ship.
HTML
+80 XP
Semantic structure that screen readers and SEO both understand. · Mastered
CSS
+100 XP
Layout systems, design tokens, and responsive craft. · Mastered
JavaScript
+160 XP
Async, DOM, and the language that powers the stack. · Mastered
TypeScript
+140 XP
Types that catch bugs before production does. · In progress
Git & GitHub
+100 XP
Branching, PRs, and collaboration like a real team. · Locked until prior nodes clear
React
+220 XP
MilestoneComponents, state, and interfaces that scale. · Locked until prior nodes clear
Next.js
+200 XP
MilestoneApp Router, Server Components, and production rendering. · Locked until prior nodes clear
Auth
+140 XP
Sessions, cookies, OAuth, and access control. · Locked until prior nodes clear
Database
+180 XP
Postgres, schemas, indexes, and migrations. · Locked until prior nodes clear
API
+160 XP
REST contracts, validation, and server actions. · Locked until prior nodes clear
CI/CD
+180 XP
MilestoneGitHub Actions: test, build, and ship on every PR. · Locked until prior nodes clear
Workers
+200 XP
MilestoneCloudflare Workers, queues, and edge compute. · Locked until prior nodes clear
Deploy
+140 XP
Domains, env, and zero-downtime releases. · Locked until prior nodes clear
Observability
+150 XP
Logs, metrics, Sentry — know before users complain. · Locked until prior nodes clear
AI in product
+220 XP
AI SDK, streaming, and features that earn their place. · Locked until prior nodes clear
Capstone
+500 XP
MilestoneFull app, live domain, portfolio you can send. · Locked until prior nodes clear
Build real products
Projects that leave the sandbox.
Pulseboard
Realtime ops dashboard with auth, roles, and deploy pipeline.
Ledgerly
Billing-ready API with webhooks, invoices, and audit trail.
Mentor OS
Context-aware coding mentor with memory and eval harness.
The stack you train in
Tools that stay open while you learn.
AI Mentor
Questions, not spoilers.
Playground
Edit. Run. Break. Fix.
Live quiz
Pressure without punishment.
Projects
Specs that feel real.
Achievements
Proof you can point to.
Progression
Make the grind feel like a campaign.
24
32day streak
340coins
Ship a PR+80 XP
Beat the quiz boss+120 XP
7-day streak+60 XP
Student journey
From first commit to first hire.
Week 1–3
Foundations
HTML, CSS, JS, TypeScript — solid floor.
Week 4–7
Frontend
React + Next.js. Interfaces that ship.
Week 8–11
Backend
Auth, Postgres, APIs — production discipline.
Week 12–14
Ship systems
CI/CD, Workers, queues, deploy, observability.
Week 15–18
Capstone
Live domain. Portfolio that opens doors.
Field notes
I thought learning meant watching until it clicked. It clicked when I shipped something that broke in production — and fixed it myself.
Pricing
One plan. Full path.
Rp139rb/month
Cancel anytime. Keep what you shipped.
- All tracks & projects
- AI mentor, unlimited
- Code review on capstones
- Verified certificates
- Community + study groups
Questions
Frequently asked questions
No. The path starts at zero and only opens the next node when you earn it.
Videos are supporting material. The core is build loops, quizzes under pressure, and projects that deploy.
It reads context from your work and asks the next right question — never pastes the full solution.
Yes. Capstones ship to live domains. That is the portfolio.
Your next level is one session away.
The path exists. The missing piece is starting it.
Enter Pelajarin