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Arifur Rahman Zerin

Founder-minded software engineer focused on scalable web products, cloud systems, DevOps integration, and applied AI. Experienced with PHP, AWS, and PyTorch-based deep learning, with a strong interest in building practical, high-value software that combines technical depth with real business impact.

Contact Me See Projects
AI, Product Engineering & Delivery

AI, Product Engineering & Delivery

Building practical systems across software, automation, infrastructure, and applied AI.

CodeIgniter, Laravel, Flutter

CodeIgniter, Laravel, Flutter

From backend architecture to product launch, with strong execution across web and mobile.

Entrepreneurship with Technical Depth

Entrepreneurship with Technical Depth

Leading teams, shaping products, and delivering systems that solve real business problems.

Personal Details
Current Role
Tech Guy + PHP + AI / Machine Learning Specialist + Entrepreneur
Entrepreneur, Technology Optimist and Software Engineer
Base
Dhaka (UK if Sponsor provided, Have PSW now) or Remote
Focus
AI + Product Engineering + PHP + Python
About
I am a product-minded software engineer with deep experience in web application development, cloud systems, DevOps integration, and applied AI. Over the years, I have worked across Laravel, CodeIgniter, AWS, RabbitMQ, and scalable backend architecture, building systems that are practical, resilient, and aligned with business goals. My work with PyTorch and deep learning has also strengthened my ability to think in terms of scalable, device-compatible, and industry-style model development, with attention to performance, maintainability, and real-world deployment constraints. I enjoy turning ambitious ideas into real products, whether that means designing internal platforms, shaping customer-facing applications, or exploring emerging technologies through hands-on experimentation. My work blends engineering discipline with entrepreneurial thinking, with a strong focus on building useful software that creates long-term value.
Education History
2023 - 2024
MSc. in Artificial Intelligence
London Metropolitan University, United Kingdom
1999 - 2004
BSc. in Computer Science & Engineering
Asian University of Bangladesh, Dhaka
Experience Timeline
2021 July - 2026 May
Popular Marketing LLC
https://popularmarketing.com/
  • Developing Custom Lead management Software in PHP, Python
  • Managing Big MySQL Database.
  • Developing Chrome extension.
  • Proficient in AWS-based server management and deployment of scalable, secure web applications.
  • Skilled in automating workflows with Generative AI (OpenAI, Gemini, Grok) and integrating third-party platforms to drive business growth.
2024 April - 2024 July
Computer Vision Research Assistant
London Metropolitan University
  • Worked on a research project from May 2024 to July 2024.
  • Served as a Computer Vision Research Assistant at London Metropolitan University, focusing on Python and machine learning-based projects.
  • Utilized YOLOv9 for real-time object detection in surveillance video streams and image datasets.
  • Developed intelligent models to detect human presence, theft, falls, and abnormal behavior for safety and monitoring applications.
2011 July - 2021 June
CTO + Software Engineer
CloudNet360 Inc. - Chicago, USA
  • Led development of scalable e-commerce and CRM platforms using PHP with CodeIgniter and Laravel frameworks.
  • Managed dedicated Linux servers to ensure high performance, uptime, and secure deployments.
  • Achieved a 25% increase in customer acquisition through optimized system architecture and functionality.
  • Key projects include CloudNet360 (shopping cart with CRM integration) and PWC Members (membership management platform).
  • Worked with distributed teams across the USA, India, Philippines, and Bangladesh.
2011 - 2021
CEO
Premium Web Cart - Dhaka, Bangladesh
  • Managed teams to sell software and deliver corporate web/software solutions for the Bangladesh market.
2007 November - 2011 June
Project Manager
Athena Software Associates - Dhaka - Bangladesh
  • Served as Project Manager at Athena Software Associates
  • Leading end-to-end development of custom software solutions.
  • Oversaw offshore projects for clients in the USA and Bangladesh, ensuring alignment with business objectives.
  • Managed cross-functional teams and maintained high-quality standards for timely project delivery.
2005 April - 2007 October
Lead Programmer
Orange Business Development Limited.
  • Developed dynamic, database-driven websites using PHP, MySQL, Joomla, and Mambo CMS.
  • Delivered tailored web solutions for diverse clients including news portals, corporate sites, and job boards.
  • Successfully completed major projects like The Financial Express, Crown Cement, SpaandanB, and LTN Business Services.
Core Skills
Python 85%
DevOps 70%
OpenAI Integration 90%
Gemini Integration 80%
Grok (x.ai) Integration 80%
PHP 100%
CodeIgniter 100%
Laravel 90%
AWS 75%
Lambda 80%
Service Area

DevOps Integration

CI/CD pipelines, deployment workflows, infrastructure automation, and operational reliability for modern software teams.

Product Development

End-to-end product delivery across backend systems, web applications, mobile apps, and practical AI-enabled features.

Product Management

Roadmaps, feature planning, delivery coordination, stakeholder alignment, and outcome-focused execution.

Server / Cloud Server Management

Linux administration, cloud hosting, performance tuning, monitoring, backups, and security hardening.

Innovation Lab
Visionary Apps
Currently Exploring
Laravel Codeigniter Langchain & RAG Engineering AI Agents LLM Product Design Cloud Automation Event-Driven Systems Applied Computer Vision Prompting-Reasoning-critique
Technology Stack
Laravel Laravel
AWS AWS
CodeIgniter CodeIgniter
RabbitMQ RabbitMQ
Laravel Laravel
AWS AWS
CodeIgniter CodeIgniter
RabbitMQ RabbitMQ
My Favourite Architecture
Microservices Architecture: Build Systems as Independent Services

Microservices Architecture: Build Systems as Independent Services

Small, loosely coupled services that scale and evolve independently

PyTorch vs TensorFlow: Architecture & Workflow Comparison

PyTorch vs TensorFlow: Architecture & Workflow Comparison

Dynamic vs static execution—choosing the right framework for research and production AI

AWS Well-Architected Framework: The 6 Pillars of Cloud Excellence

AWS Well-Architected Framework: The 6 Pillars of Cloud Excellence

Build secure, reliable, efficient, sustainable, cost-optimized, and high-performing systems on Amazon Web Services

Transformers & Attention: Teaching Models Where to Focus

Transformers & Attention: Teaching Models Where to Focus

Transformers revolutionized deep learning by replacing sequential processing with the Attention Mechanism, allowing models to weigh the importance of different input elements simultaneously. Introduced in the landmark paper Attention Is All You Need, this architecture enables parallel computation, captures long-range dependencies efficiently, and powers modern breakthroughs in NLP and beyond. Today, transformer-based models form the backbone of systems like BERT and GPT, driving applications from translation to generative AI.

Modular Monolith

Modular Monolith

A modular monolith is a software architecture that combines the simple deployment of a traditional monolith with the organized, loosely coupled structure of microservices. It acts as a single, unified codebase and deployment unit, while internally separating code into domain-specific, independent modules with clear interfaces (e.g., in systems like Shopify or GitHub).

Event-Driven Architecture

Event-Driven Architecture

Useful for workflows involving background jobs, notifications, integrations, async processing, and reliable cross-system communication.

Latest Certifications
Agentic AI badge

Agentic AI

Deeplearning.ai
May 8, 2026
LangChain Chat with Your Data badge

LangChain Chat with Your Data

Deeplearning.ai
May 5, 2025
PyTorch for Deep Learning badge

PyTorch for Deep Learning

DeepLearning.Ai - by Andrew Ng
May 2, 2026
AWS Certified Solutions Architect – Associate badge

AWS Certified Solutions Architect – Associate

Amazon Web Services
December 28, 2025
Hands-On Training in DevOps and Cloud Technologies badge

Hands-On Training in DevOps and Cloud Technologies

Ostad.app
May 29, 2025
AWS Certified Machine Learning Engineer – Associate badge

AWS Certified Machine Learning Engineer – Associate

Amazon Web Services
November 3, 2025
AWS Certified AI Practitioner badge

AWS Certified AI Practitioner

Amazon Web Services
May 17, 2025
AWS Certified Cloud Practitioner badge

AWS Certified Cloud Practitioner

Amazon Web Services
February 12, 2025
Knowledges & Focus
RAG Agents GenAI Applications Prompt Engineering Artificial Intelligence Machine Learning Product Engineering CodeIgniter Laravel AWS
Quote & Mindset
I believe useful technology should solve real problems, stay practical in production, and still leave room for ambitious ideas.
A.R. Zerin
Working Projects
Other Projects, I have Done
Lead Firewall Bookmark Chrome Extension Bookmark System Web BdBooking.com TaskGum.com Premium Web Cart My Blog Site SocrPro.com
Get In Touch
Share your basic details and the form will send an email directly to a.r.zerin@gmail.com.
Let’s build something practical and ambitious.
+44 07535621968 · a.r.zerin@gmail.com · Dhaka (UK if Sponsor provided, Have PSW now) or Remote, Bangladesh
Image Gallery
A visual gallery section for showcasing product, engineering, startup, and collaboration moments.
AI Research Flow
AI Research Flow
Product Strategy Session
Product Strategy Session
Engineering Workspace
Engineering Workspace
Technical Resources
A quick reference list of strong technical blogs and engineering sites worth following.
Site Category URL
3Blue1Brown: Neural Networks (Ch. 1–2). Visual, intuition-first walkthrough of neurons, weights, and gradient descent/backprop basics. Deep Learning - Neural Network Neural networks
Laravel News Laravel / PHP https://laravel-news.com
AWS Architecture Blog Cloud / AWS https://aws.amazon.com/blogs/architecture/
Martin Fowler Architecture https://martinfowler.com
InfoQ Engineering https://www.infoq.com