Khandker Aftarul Islam

Software Engineer & Researcher

A DevOps and Backend Engineer who builds scalable cloud systems and applies AI/ML to research in bioinformatics and assistive technology.

WORK EXPERIENCE

Software Engineer (Backend & DevOps)

Zelf AI, New York, USA (Remote) May 2024 – Present
  • Developed a video and image processing pipeline using Gemini to ground and analyze ∼100,000 daily social media assets, enabling precise content referencing
  • Built a high-performance analytics pipeline on Google Cloud Platform (GCP) using Pub/Sub, Cloud Tasks, Cloud Scheduler, Cloud Run, and Artifact Registry, processing ∼5 Million social media contents daily to track client brand sentiment and product insights
  • Implemented an in-house AI transcription service with faster-whisper model, replacing OpenAI's API, reducing costs by 75% and improving speed and throughput
  • Automated CI/CD pipelines with GitHub Actions and Infrastructure as Code (IaC) using Terraform to manage VMs, containers, and queues, caching pre-built steps to increase deployment speed by 37%

Software Engineer II

Optimizely, Dhaka, Bangladesh September 2022 – April 2024
  • Designed and implemented Emoji Reactions feature using React, Node.js, MongoDB, and WebSocket, boosting user engagement by 65% through real-time content interactions
  • Engineered All-Day Events feature for Calendar module with Node.js, MongoDB, and React, resolving timezone display issues and streamlining event management for global teams
  • Developed Recycle Bin feature with soft-delete functionality and 60-day auto-cleanup system, reducing manual asset restoration requests by 90% in collaboration with frontend team

AI & Software Engineer

Intelligent Machines Limited, Dhaka, Bangladesh July 2021 – August 2022
  • Built a Keyword Spotting Model for British American Tobacco using TensorFlow, achieving 87% accuracy for marketing campaign audio analysis, surpassing competing solutions after preprocessing with Spectral Gating
  • Created a Face-Anti-Spoofing Model for sheba.xyz using Keras, achieving 94% accuracy on video test datasets, overcoming real-time video processing challenges
  • Deployed a Kubernetes cluster on bare-metal infrastructure with Kubeadm to manage AI models, analytics, backend, frontend, RabbitMQ, and Postgres, ensuring high uptime and scalability via Horizontal Pod Autoscaling (HPA)

Software Engineer

Technohaven Company Limited, Dhaka, Bangladesh November 2020 – December 2021
  • Developed smart contracts and backend for Immunodex, a Hyperledger Fabric-based Vaccination Certificate Platform, enhancing security for educational institutions in Hong Kong
  • Designed and built frontend for StackEd, a verifiable certificate-sharing platform using Hyperledger Fabric, enabling secure credential issuance

EDUCATION

B.Sc. In Computer Science & Engineering

Graduation: May 2022
Bangladesh University of Engineering and Technology, Dhaka, Bangladesh

CGPA - 3.72/4.00

Notable Coursework: AI, ML, Computer Security, Computer Architecture, OS, Compiler, OOP, Computer Graphics

Higher Secondary Certificate (HSC), Science

2015-2016
Notre Dame College, Dhaka, Bangladesh

GPA - 5.00/5.00

Secondary School Certificate (SSC), Science

2013-2014
St. Joseph Higher Secondary School, Dhaka, Bangladesh

GPA - 5.00/5.00

RESEARCH EXPERIENCE

Mathematical Bridge Between Epidemiological and Molecular Data on Cancer and Beyond

PLOS One (Volume 20 Issue 7) 2025

Role: Author

Developed a mathematical model to integrate epidemiological and molecular data for cancer research, analyzing 21 cancer categories and 14,087 cases

Online Detection of Attentiveness of Students with Special Needs

ACII 2022

Role: First Author

Developed a deep learning-based model to predict attentiveness levels of students with Autism Spectrum Disorder (ASD) in online classes, using real-time video data to classify behaviors like gaze and movement

Dehydration Scan: AI-Assisted Smartphone-Based System for Early Detection of Dehydration

PH 2022

Role: Author

Designed an AI-assisted smartphone app to detect dehydration by analyzing facial landmarks, achieving 76.1% accuracy in identifying dehydration levels

3D-FFS: Faster 3D object detection with Focused Frustum Search in sensor fusion based networks

IROS 2021

Role: Co-First Author

Proposed 3D-FFS, a sensor fusion-based 3D object detection method, improving inference times by up to 62.80% and reducing memory usage by 58.33%

CERTIFICATIONS

Google Cloud - Certified Associate Cloud Engineer

Credential validating expertise in deploying applications, monitoring operations, and managing enterprise solutions on Google Cloud Platform

April 2025

IELTS - Overall Score 8.0

Credential validating proficiency in English

June 2024

PROJECTS

Neolexical Limited

January 2021

Technologies: Firebase, ReactJS, Flutter

Web application for automating Will and LPA creation in English Law

Prism - Project Management App

January 2021

Technologies: Django, ReactJS

Web application for Project Management with Kanban board and Gantt chart

Letter of Credit on Blockchain

August 2020

Technologies: Corda, Spring Boot, ReactJS

Blockchain solution for creating, issuing and managing Letter of Credit, Purchase Order and Bill of Lading

Corona In Bangladesh

March 2020

Technologies: NodeJS, MongoDB

Website created to serve as an information hub about the Covid-19 epidemic in Bangladesh. Recognized by Bangladesh Government as a reliable Covid-19 related news outlet

AWARDS & ACHIEVEMENTS

Silver Medal – International Blockchain Olympiad 2021

Designed a crowd-sourced loan platform for SMEs using Corda & Hyperledger Indy

Top 50 – AWS reInvent BugBust Challenge 2021

Fixed 100+ bugs across different open-source projects & achieved all 5 milestones

Winner – National Hackathon on Frontier Technologies 2020

Designed an AI-based system for solving the problem of viral fake news and misinformation

Runners Up – BUET CSE Hackathon on Blockchain & Web-Security 2019

Developed a secure REST API backend server using NodeJS and a mortgage platform on Ethereum

TECHNICAL SKILLS

Languages

Python JavaScript TypeScript Go Java C++

Cloud & DevOps

GCP AWS Terraform Kubernetes Prometheus Docker Jenkins Git

Backend & Databases

NodeJS Django MongoDB Postgres MySQL Elasticsearch

Frontend

ReactJS VueJS

AI

PyTorch TensorFlow Gemini OpenAI Hugging Face