✦ Available for opportunities

Data Engineer
And
Web Developer

I design robust data pipelines, automate workflows, and build scalable backend system using Python, SQL, and modern data tools.

View my work About me →
Afsan Habib — Data Engineer
⚡ Data Engineer
★ Backend Devloper

Professional Summery

About Me

I'm Afsan Habib — a Data Engineer with a backend engineering foundation.

I started my journey as a Django Developer in 2018, developing secure and high-performance backend systems. In 2024, I transitioned into Data Engineering, where I now work with ETL pipelines, workflow orchestration, data warehousing, and cloud-ready infrastructure using tools like Apache Airflow, PostgreSQL, Docker, Python, and SQL.

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2018

Career started

2024

Pivoted to Data Eng.

Location

Bangladesh

Remote

worldwide

Career journey

Experience

From building robust web apps to engineering data at scale.

2024 — Present

Data Engineer

Freelance / Remote / Various clients

Current

  • Design and maintain end-to-end ETL/ELT pipelines processing millions of records daily using Apache Spark and Apache Airflow.
  • Architect cloud-native data warehousing solutions on Snowflake and BigQuery with optimized query performance and cost efficiency.
  • Leverage deep Django/PostgreSQL experience to model complex data schemas and enforce data integrity at ingestion.
  • Implement CI/CD workflows for pipeline deployments on AWS and GCP with Docker-based containerization.

  • Airflow
  • dbt
  • PySpark
  • BigQuery
  • AWS S3
  • Docker

2018 — 2024

Django Web Developer

Freelance / Remote / Various clients

  • Built and maintained high-traffic production web applications serving thousands of concurrent users using Django and Django REST Framework.
  • Designed normalized, performance-tuned PostgreSQL schemas and authored complex ORM queries and raw SQL for analytics use cases.
  • Implemented secure authentication systems, role-based access control, and REST API endpoints consumed by mobile and frontend clients.
  • Maintained containerized development environments with Docker and established Git-based team workflows and code review practices.

  • Django
  • DRF
  • PostgreSQL
  • Celery
  • Redis
  • REST APIs

Capabilities

My Skills

A backend-first toolkit that powers modern data infrastructure.

Data Engineering

  • Apache Airflow / Prefect
  • Apache Spark / PySpark
  • dbt (data build tool)
  • ETL / ELT Pipelines
  • BigQuery / Snowflake
  • Kafka / Streaming

Backend & Django

  • Python / Django (6 yrs)
  • Django REST Framework
  • FastAPI / Celery
  • PostgreSQL / MySQL
  • Redis / Caching
  • REST & GraphQL APIs

Infra & Tools

  • Docker / Docker Compose
  • AWS (S3, RDS, Lambda)
  • GCP (BigQuery, GCS)
  • Git / CI/CD
  • Linux / Bash
  • Terraform basics

Selected work

Projects

Real-world systems built with precision and purpose.

FoodPanda Delivery Analytics

Designed and developed a PostgreSQL-based analytics warehouse inspired by Foodpanda. Implemented advanced SQL analytics, including customer lifetime value, revenue trends, rider performance and operational KPIs using CTEs.

  • SQL
  • PostgreSQL
  • Data Warehousing
  • Git
View Project →

Real-time Analytics API

Django + Kafka streaming API serving live aggregations to a React dashboard. Sub-100ms P99 latency via Redis caching and pre-computed rollups.

  • Django
  • Kafka
  • Redis
  • PostgreSQL
View Project →

E-commerce Data Warehouse

This project simulates a real-world e-commerce data warehouse built in PostgreSQL. Supports business analytics for revenue, customer behavior, and product performance. E-Commerce Analytics Data Warehouse (PostgreSQL)

  • SQL
  • PostgreSQL
  • Data Warehousing
  • Git
View Project →

ETL Observability & Alerting System

Instrumented a Django-based internal dashboard for monitoring Airflow DAG health, data freshness SLAs, and pipeline failures. Reduced mean-time-to-detection for data incidents by 70%.

  • Airflow
  • AWS CloudWatch
  • PostgreSQL
View Project →

Multi-tenant SaaS Backend

Row-level security, tenant-isolated schemas, and a REST + GraphQL dual-interface built in Django REST Framework. Handles 500+ concurrent tenants.

  • DRF
  • GraphQL
  • Docker
View case study →
See all projects

Get in touch

Let's Work Together

Have a data engineering challenge or backend project? I'd love to hear about it.

Location

Remote — available worldwide

Availability

Open to freelance & contract