Senior Software Engineer

Hi, I'm Hammad Khan

Architecting Scalable Web Platforms

With over 10 years of experience, I specialize in building robust backend systems, optimizing databases, and deploying cloud infrastructure. Passionate about Ruby on Rails, Python, and AI-driven applications.

About Me

Driving innovation through code and architecture.

My Journey

I’m a Senior Software Engineer with 10+ years of experience building scalable web platforms and backend systems. I excel in solving complex engineering problems and designing systems that scale alongside products and teams.

Over the years, I’ve managed the full product lifecycle — from technical requirements and system design to deployment and production monitoring. I specialize in Ruby on Rails and Python, creating reliable APIs, optimizing PostgreSQL databases with millions of records, and managing cloud infrastructure on AWS and Heroku.

My work integrates the latest in AI capabilities, performance enhancements, and CI/CD pipelines, ensuring robust and future-proof solutions.

Backend & APIs

Ruby on Rails Python GoLang PostgreSQL Redis Sidekiq REST APIs GraphQL

Cloud & DevOps

AWS (EC2, RDS, S3) Heroku Docker GitHub Actions CircleCI Nginx ELK Stack

Frontend & Other

React.js Vue.js TypeScript TailwindCSS Test Driven Development AI Integration

Professional Experience

My career path in software engineering.

January 2021 — Present

Senior Product Engineer

WeGuide (Australia)

Leading backend development for a digital health and clinical research platform. Manage backend infrastructure on Heroku and deliver features end-to-end.

  • Spearhead Ruby on Rails application development, CI/CD pipelines, and API architecture.
  • Optimize PostgreSQL databases and caching strategies, improving overall application performance.
  • Integrate AI-driven research capabilities and SMS/email notification systems (Twilio, SendGrid).
July 2016 — February 2021

Senior Lead Software Engineer

Fliclicks

Led development and architecture across multiple production Ruby on Rails applications serving international clients.

  • Designed scalable backend systems and maintained large Rails monolith architectures.
  • Set up cloud infrastructure using AWS and Heroku, implementing full CI/CD pipelines.
  • Mentored junior developers, conducted code reviews, and managed comprehensive database schema designs handling millions of records.
June 2013 — September 2013

Android Developer

Iexella

Developed core Android-based applications focusing on functionality and user experience.

Selected Projects

A glimpse into the robust systems I've built.

Gogen

IT Service & Asset Management

Built core backend features for an enterprise platform. Designed infrastructure on AWS and implemented real-time notifications alongside rigorous performance scaling.

Ruby on Rails Vue.js PostgreSQL AWS

NxtBroker

Insurance Agency Platform

Maintained a large monolith application while implementing schema-based multi-tenancy using Apartment. Centralized logging with the ELK stack for better observability.

Ruby on Rails PostgreSQL Heroku ELK Stack

PatientIQ

Healthcare Analytics Platform

Developed scalable RESTful services for HIPAA-compliant healthcare reporting. Optimized queries handling massive datasets and built real-time React dashboards.

Ruby on Rails React Redis PostgreSQL

Let's Connect

I'm currently available for new opportunities and collaborations.

Phone

+92 322 5848387

Location

Lahore, Pakistan / Remote (Global)