Backend Engineer Roadmap

This document is my focused roadmap toward becoming a Backend Engineer (with deployment knowledge) and landing an internship.
The goal is to stay focused and not just random learning.

Technology Roadmap (Level-Wise)

We divide everything into 3 levels:

• Level 1 → Internship Ready
• Level 2 → Strong Backend Candidate
• Level 3 → Standout / Advanced

Each section includes: - Estimated Time to Learn - Where to Implement - How to Showcase

LEVEL 1 – Core Backend (Internship Ready)

These are non-negotiable.

1. HTTP + REST API Design

• Status codes
• Idempotency
• CRUD design
• Request validation
• Error handling

Implementation: SafeShare project
Showcase: Clean Swagger docs + proper endpoint design

2. PostgreSQL + SQL

• SELECT, JOIN, GROUP BY
• Indexes
• Constraints
• Relationships (1:N, M:N)
• Basic query optimization

Cost: Free (local install / Docker)
Implementation: Replace any in-memory DB with PostgreSQL in SafeShare
Showcase: ER diagram + schema design in README

3. ORM (SQLAlchemy)

• Models
• Relationships
• Migrations

Cost: Free
Implementation: SafeShare database layer
Showcase: Clean model structure + migration setup

4. Authentication System

• JWT
• Refresh tokens
• Password hashing (Bcrypt)
• Role-Based Access Control

Cost: Free
Implementation: SafeShare
Showcase: Auth flow diagram in README

5. Docker (Properly)

• Multi-stage builds
• Docker Compose
• Environment variables
• Volumes

Cost: Free
Implementation: All backend projects
Showcase: docker-compose.yml + clean Dockerfile

6. Deployment (Mandatory)

Options: - Render (Free tier) - Railway (Limited free) - Fly.io (Free credits) - AWS EC2 Free Tier

Time: 1 week
Cost: Mostly free
Implementation: Deploy SafeShare publicly
Showcase: Live link on portfolio

if(level1 == "strong" ):
    internship_ready();

    # I am doing it cuz, why not?

LEVEL 2 – Strong Backend Engineer

These increase job surface area.

7. Redis

• Caching
• Rate limiting
• Session storage

Cost: Free (Docker or Upstash free tier)
Implementation: Add caching + login rate limiter in SafeShare
Showcase: Explain performance improvement in README

8. Background Tasks

• FastAPI BackgroundTasks or Celery
• Async processing

Cost: Free
Implementation: File processing or email simulation
Showcase: Async architecture explanation

9. WebSockets

• Real-time updates
• Persistent connections

Cost: Free
Implementation: Real-time Task Manager project
Showcase: Demo video or deployed feature

10. GitHub Actions (CI/CD)

• Automated testing
• Docker image build
• Auto deployment

Cost: Free
Implementation: All backend projects
Showcase: CI badge in README

if(level1 == "strong" and level2 == "strong" ):
    internship_ready(level = "strong");

    # :)

LEVEL 3 – Standout Knowledge

Only after mastering above.

• Nginx reverse proxy
• AWS basics (EC2, S3, IAM)
• Logging & monitoring basics
• Horizontal scaling concepts
• Basic system design

Will learn Kubernetes later (may be).

Project Strategy

Final 4 Projects Strategy:

1. SafeShare (Production-Ready SaaS Backend)
   • PostgreSQL
   • Redis
   • Auth
   • Background tasks
   • CI/CD
   • Deployment
2. Real-Time Task Manager
   • WebSockets
   • PostgreSQL
   • Redis Pub/Sub
   • Docker
   • Deployment
3. CICFlowMeter API
   • Dockerized API
   • File handling
   • Orchestration
4. KernelTalk
   • Linux kernel module
   • IPC
   • Concurrency

A random quote; ( cause I found it interesting )

“Do not wait for perfection.
Learn and upgrade while in the market.”

Final Goal

Become a Backend Engineer Intern by: - Demonstrating production-ready backend systems - Showing deployment knowledge - Proving architectural understanding - Maintaining strong fundamentals

This document remains the focus until internship is secured.