Welcome to my world!

Welcome to my world!

I’m a passionate backend engineer focused on building scalable, high-performance systems with precision and attention to detail.

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Lead Backend Engineer @ZelfAI

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6+ years of experience

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English, Bengali

I’m a passionate backend engineer focused on building scalable, high-performance systems with precision and attention to detail.

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Lead Backend Engineer @ZelfAI

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6+ years of experience

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English, Bengali

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Hero section

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Backend Systems Architect

Backend Systems Architect

I architect high-performance backend systems that convert complex requirements into efficient, real-world high-performance digital solutions.

I architect high-performance backend systems that convert complex requirements into efficient, real-world high-performance digital solutions.

I architect high-performance backend systems that convert complex requirements into efficient, real-world high-performance digital solutions.

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Since

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Since

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2020

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2020

Since

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2020

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About me section

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Inside My Technical Core

I’m a Backend Engineer focused on building scalable, high-performance systems that turn complex problems into clean, reliable solutions. With a strong foundation in system design and data-driven architecture, I develop robust APIs and backend services that power efficient, real-world applications while ensuring performance, scalability, and maintainability.
I enjoy collaborating with teams, solving real-world problems, and turning complex ideas into clean, performing services.

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In a previous life

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Jul 2022 - Present

Lead Backend Engineer

May 2021 - Dec 2021

Full-Stack Engineer

Jul 2020 - May 2021

Full-Stack Engineer

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What I do

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1. Backend Systems

1. Backend Systems

Scalable API design & architecture

Database design & query optimization

Distributed systems & microservices

System performance tuning

Logging, monitoring & reliability

AI Powered Data pipelines & processing

2. Front-End Development

2. Front-End Development

Python / Django / FastAPI / Golang

PostgreSQL / BigQuery / Redis

Celery & asynchronous processing

Docker & Kubernetes deployment

Cloud (GCP) architecture

Cross-browser compatibility

3. Systems to Production

3. Systems to Production

Clean, scalable, maintainable code

High-performance system optimization

AI-powered systems & intelligent workflows

Data-driven & real-time applications

Fault-tolerant & resilient architecture

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My tech stack

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Python

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Python

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Django

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Django

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FastAPI

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FastAPI

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Postgres

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Postgres

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Golang

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Golang

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Typescript

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Typescript

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Bash

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Bash

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Docker

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Docker

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Kubernetes

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Kubernetes

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Neovim

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Neovim

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Redis

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Redis

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Certification

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March 2025

Associate Cloud Engineer Certification

March 2025

Essential Google Infrastructure: Core Services

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Testimonial

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Feedback That Fuels Me

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Khan, As of writing this is quite young. But that can be deceiving because he is an excellent engineer. In fact, he is better than many senior engineers I have worked with throughout my career. Khan writes good clean code. Very religious about writing it better rather than jerry-rigging solution.

Anam Ahmed

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VP Of Engineering, Zelf AI

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I had the privilege of working closely with Khan at Zelf, and I can confidently say he is one of the most extraordinary young backend engineers I have ever encountered. His technical expertise and innovative approach to backend development are truly exceptional.

Nazmul Hasan

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Full Stack Engineer

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Khan is a top notch developer. He is intelligent, intuitive and values his clients. I highly recommend him

David Pritchard

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Executive, AKG

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Avatar

Khan, As of writing this is quite young. But that can be deceiving because he is an excellent engineer. In fact, he is better than many senior engineers I have worked with throughout my career. Khan writes good clean code. Very religious about writing it better rather than jerry-rigging solution.

Anam Ahmed

VP Of Engineering, Zelf AI

Avatar

I had the privilege of working closely with Khan at Zelf, and I can confidently say he is one of the most extraordinary young backend engineers I have ever encountered. His technical expertise and innovative approach to backend development are truly exceptional.

Nazmul Hasan

Full Stack Engineer

Avatar

Khan is a top notch developer. He is intelligent, intuitive and values his clients. I highly recommend him

David Pritchard

Executive, AKG

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Get in Touch

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Let’s Work Together

@Khan Asfi Reza

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@Khan Asfi Reza

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@Khan Asfi Reza

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