Aranya Dutta
Writing/Backend Engineer Roadmap
2025.10.11Career

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.

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