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Perfect SDE: Backend Engineering Program

15 Weeks • 90 Hours — Learn backend engineering with Java Spring Boot, Microservices, WebSockets, and database integration. Gain real-world experience in building production-ready APIs and systems.

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About the Course

The Perfect SDE: Backend Engineering Program provides hands-on training in backend system development using Java Spring Boot and industry-standard tools. Each session focuses on practical coding, architecture, and deployment concepts.

Over 15 intensive weeks, you’ll build APIs, integrate databases, implement authentication, and design microservices — just like enterprise-level systems.

15-Day Syllabus Overview

Day 1

Java Basics & Introduction to Backend Concepts

  • Understand Java syntax, OOP basics, and class structure
  • Quick overview of Python and JavaScript for backend use cases
  • Introduction to REST architecture, APIs, and controllers
  • Understanding how client-server communication works

Outcome: Build foundational knowledge in Java and backend principles.

Day 2

Spring Boot Setup & First API Creation

  • Recap of backend architecture and frameworks
  • Setting up Spring Boot environment and dependencies
  • Creating your first REST API and handling requests/responses
  • Running and testing the application locally

Outcome: Set up a working Spring Boot environment and deploy your first API.

Day 3

Spring Boot REST APIs & Controllers

  • Creating RESTful controllers and endpoints
  • Using annotations (@GetMapping, @PostMapping, etc.)
  • ResponseEntity, RequestBody, and PathVariables
  • Implementing request validation and error handling

Outcome: Develop clean, reusable REST APIs using Spring Boot controllers.

Day 4

Spring Boot Services, Repositories & Dependency Injection

  • Creating service and repository layers for modular architecture
  • Dependency Injection with @Autowired
  • Understanding @Service, @Repository, and @Component annotations
  • Connecting service and controller layers effectively

Outcome: Build modular and maintainable backend architectures with proper layering.

Day 5

Spring Boot Security & JWT Introduction

  • Introduction to application security concepts
  • Basic authentication and authorization mechanisms
  • Overview of JWT (JSON Web Tokens) and how they work
  • Integrating Spring Security for user authentication

Outcome: Understand API security principles and introduce token-based authentication.

Day 6

JWT Implementation & Authentication System

  • Implementing JWT token generation and validation
  • Securing REST endpoints with Spring Security
  • Using filters for authentication and authorization
  • Testing secure APIs with Postman and debugging authentication issues

Outcome: Implement complete authentication using JWT in Spring Boot applications.

Day 7

Middlewares, Filters & Exception Handling

  • Implementing global exception handlers using @ControllerAdvice
  • Custom middleware and filters for logging and validation
  • Error handling best practices and response standards
  • Testing middleware pipelines with sample data

Outcome: Enhance API reliability with centralized exception handling and custom filters.

Day 8

Introduction to Microservices Architecture

  • Understanding Monolithic vs. Microservices architecture
  • Breaking down applications into modular services
  • Introduction to API gateways and service discovery concepts
  • Advantages and trade-offs of microservices

Outcome: Grasp the fundamentals of microservices and distributed system design.

Day 9

Building Microservices with Spring Boot

  • Creating independent services in Spring Boot
  • Inter-service communication using REST or Feign Clients
  • Implementing configuration management for microservices
  • Containerizing microservices for deployment (Docker introduction)

Outcome: Design and build scalable microservices that communicate seamlessly.

Day 10

WebSockets & Real-Time Communication

  • Understanding WebSockets and use cases for real-time apps
  • Implementing WebSocket APIs in Spring Boot
  • Handling live data streams (chat, notifications)
  • Integrating frontend clients with WebSocket connections

Outcome: Implement real-time data streaming using WebSockets in backend applications.

Day 11

Advanced WebSocket Use Cases

  • Scaling WebSocket servers for multiple clients
  • Message brokers (RabbitMQ/Kafka) for event-driven communication
  • Securing WebSocket connections
  • Error handling and testing real-time apps

Outcome: Build secure and scalable real-time systems using WebSockets and message queues.

Day 12

Database Integration (JPA & MongoDB)

  • Connecting Spring Boot with relational and NoSQL databases
  • CRUD operations using Spring Data JPA
  • Repository interfaces and custom queries
  • Connecting to MongoDB and basic data handling

Outcome: Integrate and manage relational and NoSQL databases effectively.

Day 13

Advanced Database Operations & Transactions

  • Understanding ACID properties and transaction boundaries
  • Managing multi-entity transactions and rollbacks
  • Optimizing queries and indexing
  • Database migrations using Liquibase or Flyway

Outcome: Handle complex database operations and ensure data consistency across transactions.

Day 14

Backend Design Patterns & Best Practices

  • Implementing Factory, Singleton, Strategy, and Repository patterns
  • Optimizing backend performance and maintainability
  • Understanding SOLID principles in backend development
  • Code review and architecture discussion

Outcome: Design backend systems that are clean, scalable, and easy to maintain.

Day 15

Final Project, Q&A & Wrap-up

  • Building a full backend application from scratch
  • Integrating microservices, authentication, and databases
  • Debugging and optimizing code performance
  • Final review, project submission, and feedback

Outcome: Apply all learned concepts to build and deploy a complete backend project.

Why Join PerfectSDE?

Hands-On Learning

Every session focuses on practical implementation, not just theory.

Mentor-Led Sessions

Learn directly from engineers experienced in real-world development and deployments.

Career Support

Build a strong portfolio, gain interview guidance, and prepare for high-paying SDE roles.

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