Developer-first // Hands-on projects & mentor feedback

ZeroBug — Learn, Build, Ship

Learn software engineering by building real projects. Interactive sandboxes, mentor reviews, and career-ready portfolios — get from concept to deployable product.

Start Free — Start your first project Browse Courses Live Playground
Trusted by 20k+ devs
•
Mentor-reviewed projects
•
Career portfolio-ready
// ----------

Quick Start

LCP target: <2.5s
  • 01
    Create your project
    Start a repo, pick a stack, open a playground.
  • 02
    Build & test
    Browser sandboxes for JS, Python, Node, Go.
  • 03
    Ship & get feedback
    Mentor reviews, CI/CD demos, and deploy links.
Roadmap Changelog
// ----------

Developer-first · Project-based · Mentor-led

Learn, Build, Ship

ZeroBug.dev teaches software engineering through practical projects and interactive challenges — get mentor feedback, use real-world stacks, and build a portfolio recruiters notice.

Start Free Browse Courses
Trusted by developers at startups & FAANG
Mentor reviews & verified projects
Quick intro: Browser sandboxes, real repos, CI/CD labs, deployment demos — start your first project in minutes.
ZeroBug hero — Learn Build Ship banner
Interactive demo: run code in the browser — no setup required.
// ----------
// ----------

Why ZeroBug.dev

Project-based learning that mirrors real engineering workflows — get mentor feedback, ship deployable artifacts, and build a career-ready portfolio.

Mentor feedback

Structured reviews from senior engineers to improve code quality, architecture, and interview narratives.

  • Actionable PR reviews
  • Portfolio critique & resume notes

Real-world stacks

Work with React, TypeScript, Node, Go, Postgres, Docker, and modern CI/CD pipelines.

React TypeScript Postgres Docker

Career-ready portfolio

Ship projects with tests, CI/CD, documentation, and deployment demos that recruiters can evaluate.

See sample portfolios
// ----------

Tracks & Courses

Curated project paths across Web, Backend, DevOps, Data/AI, and Security. Each track lists level, duration, and prerequisites.

Web Development — Full Stack

Level: Intermediate • Duration: 12 weeks
Prereqs: HTML, JS

Build production-ready React + TypeScript apps with Node APIs and Postgres.

React TypeScript Postgres
View syllabus Enroll

Backend Engineering

Level: Intermediate • Duration: 10 weeks
Prereqs: JS / Python

REST APIs, authentication, testing, and scalable services in Node or Go.

Node Go Docker
View syllabus Enroll

DevOps & CI/CD

Level: All Levels • Duration: 6 weeks
Prereqs: Git

Build pipelines, containerize apps, and deploy to Vercel/Netlify or self-hosted infra.

Docker CI/CD
View syllabus Enroll

Data & AI

Level: Intermediate • Duration: 8 weeks
Prereqs: Python

Data pipelines, model evaluation, and building deployable ML services.

Python Postgres
View syllabus Enroll

Security Fundamentals

Level: All Levels • Duration: 4 weeks
Prereqs: Basic dev

Appsec basics, threat modeling, secure CI/CD, and container security practices.

CI/CD Docker
View syllabus Enroll
// ----------

Interactive Playground

Browser-based sandboxes for HTML/CSS/JS, Python, Node, and Go — run and iterate without local setup.

What you get

  • Live preview, hot reload, terminal, and integrated testing
  • Saveable workspaces and Git integration
  • Run Node, Python, and Go snippets directly in the browser
Sample preview
// index.html<!doctype html><html>  <body>    <div id="app">Hello ZeroBug</div>    <script>      document.getElementById('app').style.color = '#12FFE0';    </script>  </body></html>
// ----------

Projects Library

Real projects with goals, tech stack, difficulty, and repo/demo links to showcase in your portfolio.

REST API Development

Goal: Build a versioned REST API
Tech: Node, Express, Postgres, Docker
Difficulty: Intermediate
Repo Demo

CI/CD Pipeline

Goal: Automate tests and deployment
Tech: GitHub Actions, Docker, Vercel
Difficulty: Advanced
Repo Demo

React Dashboard

Goal: Interactive admin UI
Tech: React, TypeScript, Chart.js, Postgres
Difficulty: Intermediate
Repo Demo

SQL Reporting

Goal: Build analytics reports
Tech: Postgres, SQL, ETL scripts
Difficulty: Intermediate
Repo Demo
// ----------

Mentorship & Community

Active Discord, forum discussions, peer code reviews, and weekly office hours to help you ship projects faster.

Support channels

  • Discord & Forum support
  • Peer code reviews & collaboration
  • Weekly office hours with mentors

Testimonials

"Mentor reviews turned my hobby projects into interview-ready artifacts." — Senior Developer
"The playground lets me iterate quickly and share demos with employers." — Bootcamp Grad
// ----------

Pricing

Free tier to explore sandboxes and community. Pro adds mentor reviews, certificates, and private repos.

Free

  • Access to playground sandboxes
  • Public projects & community chat
  • Sample syllabi
Get Free

Pro

  • Mentor code reviews (monthly)
  • Verified certificate of completion
  • Private repos & portfolio guidance
  • Priority community support
Upgrade to Pro
// ----------

Blog & Docs

Latest articles and a comprehensive documentation hub for courses, APIs, and platform guides.

Go to docs hub
// ----------

FAQ

How much time should I commit per week?

Most tracks recommend 6–12 hours per week; projects can be completed faster with focused sprints or pairing sessions.

What prerequisites are required?

Each track lists prerequisites (e.g., basic JS or Python). Beginners can start with foundational modules.

Do you offer refunds?

Refunds for paid plans are available within 14 days if fewer than 10% of course materials are accessed. See terms for details.

Are certificates recognized?

Certificates verify completion and include links to project repos and mentor feedback. They're designed for recruiter review.

What support is available?

Discord, forum, peer reviews, and weekly mentor office hours. Pro members receive priority review queues.

How are mentor reviews delivered?

Mentor reviews are provided via annotated PRs, recorded notes, and follow-up sessions for higher-tier plans.

// ----------

Roadmap & Changelog

Upcoming

  • Managed labs for GPU-backed model training
  • Enterprise team features and interview coaching
  • Additional language tracks: Rust, Kotlin

Recent updates

  • Added Go sandbox and CLI labs
  • Improved mentor feedback workflows
  • New React dashboard project templates
// ----------

Integrations

Connect your projects to common platforms for CI, deployment, and package management.

GitHub
Docker Hub
Vercel / Netlify
PostgreSQL
See all integrations
// ----------

Accessibility & Performance

Accessibility

  • Keyboard-navigable menus and focus styles
  • Aria labels on interactive elements
  • High contrast text (WCAG target ≥ 4.5:1)

Performance targets

  • LCP < 2.5s target — lazy-loaded images and SVG icons
  • Compressed assets and minimal runtime JS
  • Code sandboxes optimized for quick startup
// ----------

Contact & Social

Get in touch or follow us for updates.

We send project ideas, job-ready tips, and roadmap updates. Unsubscribe anytime.
// ----------
ZeroBug supporting content image showcasing developer workflow
// ----------
Background image related to ZeroBug.dev coding platform
// ----------

Start your first project in 5 minutes

Sign up and open a sandbox — get mentor feedback as you progress.

Start your project Learn more
Start your first project in 5 minutes
No setup · Live sandboxes · Mentor feedback
Get started