Level 2 of 6 · Shared path

Junior Java Backend Engineer

Build, test, secure and deploy a real backend with Spring Boot and PostgreSQL.

250–350 hoursstudy estimate
6 Phases57 Modules
369 Lessons(curriculum)
Capstone projectE-Commerce Backend API

What you'll learn

Implements, tests, secures, and deploys a maintainable backend application within an existing architecture, collaborates using Git, and handles straightforward production defects with guidance.

Professional Java Development
Spring Framework Fundamentals
REST API Engineering
Database Integration
Authentication and Application Security
Testing and Delivery

What you'll build

E-Commerce Backend API

Modular layered monolith with registration, login, catalog, inventory, cart, orders, mock payments, administration; OpenAPI, migrations, tests, Docker Compose, CI, deployment, structured logs.

Is this level for you?

Graduates of Level 1 or self-taught programmers with equivalent skills.

Curriculum

Open a phase to see its modules.

Phase 01: Professional Java Development8 modules · 59 lessons

Phase 02: Spring Framework Fundamentals9 modules · 59 lessons

Phase 03: REST API Engineering9 modules · 55 lessons

Phase 04: Database Integration10 modules · 63 lessons

Phase 05: Authentication and Application Security9 modules · 59 lessons

Phase 06: Testing and Delivery12 modules · 74 lessons

Prerequisites

Recommended before this level: Level 1 · Beginner — Foundations

Completion criteria

Given a feature request, implements it independently within the established architecture, writes meaningful tests, explains the database changes, and delivers a reviewable pull request.

Ready to begin Level 2?

Lesson 1: Java's release model and LTS versions

10 min read

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