Senior Full Stack Developer

SHAHZAIB ASIF

Ruby on Rails • Python Django / FastAPI • AI Integrations

I am a Senior Full-Stack Developer with 5+ years of experience building fast, reliable, and scalable applications. I specialize in Ruby on Rails, Python (Django and FastAPI), modern front-end frameworks (React, Angular, Vue, Next.js), and cloud deployment across AWS and Heroku.

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Shahzaib Asif

Professional Summary

I am a Senior Full-Stack Developer with 5+ years of experience building fast, reliable, and scalable applications. I specialize in Ruby on Rails, Python (Django and FastAPI), modern front-end frameworks (React, Angular, Vue, Next.js), and cloud deployment across AWS and Heroku.

What I Bring
  • Deep expertise in Ruby on Rails, Python (Django and FastAPI) system architecture, and API development.
  • Strong front-end experience with React, Angular, Vue, and Next.js.
  • Proven skill in search performance optimization with ElasticSearch and OpenSearch.
  • Hands-on DevOps with AWS (EC2, RDS, Elastic Beanstalk), CI/CD, Nginx, and Sidekiq.
  • Ability to lead teams and deliver complex features end-to-end.

I have led product development from scratch, optimized existing systems, and delivered improvements that reduced load times, increased engagement, and supported business growth.

My focus is clean architecture, maintainable code, and solutions that create measurable impact. I enjoy solving challenging engineering problems and collaborating with teams that value quality and scalability.

Open to remote roles and high-impact projects.

5+ Years

Building and scaling full-stack platforms

40% Sales Lift

AfterPay integration impact

$50K Saved

Through inventory automation improvements

Professional Experience

Lead Software Engineer | DevTeam360

Jan 2022 - Present • Maryland, US (Hybrid)

  • Upgraded Angular from v7 to v13 in 3 weeks, improving performance and developer experience.
  • Delivered AfterPay Buy Now Pay Later integration, contributing to a 40% increase in sales.
  • Built automated sitemaps and slug management, boosting Google rankings by 65%.
  • Shipped Django APIs with PostgreSQL query optimization for data-heavy reporting.
  • Developed FastAPI microservices with LangChain and OpenAI RAG pipelines for search and recommendations.
  • Established CI/CD pipelines and reduced deployment friction and release cycle time.

Senior Software Engineer | Stack360

Jan 2021 - Dec 2022 • Lahore, PK

  • Built reusable Vue.js components to accelerate front-end delivery and maintainability.
  • Integrated ElasticSearch from scratch, reducing search response from 1-2 minutes to 200ms.
  • Improved SEO and sales through Angular SSR modernization from v8 to v13.
  • Scaled AWS infrastructure for peak traffic and higher application availability.
  • Deployed Rails and Angular apps to Elastic Beanstalk with production-ready environments.

Software Developer | DevConsole

Jan 2019 - Dec 2021 • Lahore, PK

  • Built Ruby on Rails applications and REST APIs that increased sales by 25% and reduced bounce rate by 40%.
  • Implemented Stripe payment processing for Petstablished from scratch.
  • Designed location-based search features to improve relevance and response speed.
  • Enforced testing, Rubocop standards, Sidekiq workloads, and AWS production setup.

Key Achievements

  • ElasticSearch optimization reduced API response time to 200ms on high-traffic auto-parts systems.
  • Shipped production RAG pipelines using FastAPI, LangChain, and OpenAI for MoneyBall, Alertia, and IdealFulfillment.
  • Implemented real-time inventory automation saving $50,000+ annually.
  • Delivered Rails and Angular applications on AWS Elastic Beanstalk with high availability in a 2-week deadline.
  • Launched AfterPay BNPL integration that drove 40% sales growth.
  • Led a 6-person cross-functional team from product design to production delivery.

Technical Skills

Languages

Ruby • Python • JavaScript • TypeScript • PHP

Backend

Ruby on Rails • Django • FastAPI • Node.js • Express.js • NestJS

Frontend

React.js • Angular • Vue.js • Next.js • Redux • MobX • Tailwind • SASS

AI and ML

LangChain • RAG Pipelines • OpenAI API • Vector Search • LLM Integration

Databases

PostgreSQL • MySQL • MongoDB • TypeORM • Snowflake • Redis

Cloud and DevOps

AWS (EC2, RDS, Elastic Beanstalk, IAM, OpenSearch) • Azure • Heroku • CI/CD • Jenkins • Docker

Search, Queue, and APIs

ElasticSearch • OpenSearch • Sidekiq • Firebase • REST APIs • WebSockets • Stripe • Square • AfterPay

Tools and BI

Nginx • Passenger • Gulp • Odoo • PowerBI • Tableau • WordPress • Jira • ClickUp

Notable Projects

MoneyBall

Python Django • React • RAG AI • LangChain • OpenAI • PostgreSQL

Alertia

FastAPI • React • RAG AI • LangChain • OpenAI • Vector Search

IdealFulfillment

FastAPI • React • RAG AI • OpenAI • LangChain

MiTaller

Python Django • React • REST APIs • PostgreSQL

Autobuffy

Ruby on Rails • Angular • AWS • ElasticSearch • DevOps

Premium Shocks

Ruby on Rails • Angular • AWS • ElasticSearch • DevOps

Mckesson

Ruby on Rails • Tableau • Snowflake

Fansiq

Ruby on Rails • Next.js • SSR

Coach Catalyst

Ruby on Rails • Vue.js

Cercle

Ruby on Rails • React

Petstablished

Ruby on Rails • Angular • Stripe • DevOps

Cashkart

Ruby on Rails • React

Online Grocery

Ruby on Rails • React

OpenHRMS / Odoo

Odoo • Python • Business Automation

M-Suite

Ruby on Rails • Vue.js

WhersMyConcrete

Ruby on Rails • Angular • Ionic

KDG ATC

DotNet • Vue.js

EcommerceBP

WordPress • PHP Laravel

Education and Certifications

Bachelor of Science in Information Technology (BS IT)

University of the Punjab • Sep 2017 - Jun 2021 • Lahore, PK

Certifications

Contact

Shahzaib Asif

Senior Full Stack Developer

+92-324-4610236

shahzaibsardar777@gmail.com

linkedin.com/in/shahzaib-asif-244567173

github.com/ZaibAsif

Copyright © 2026 Shahzaib Asif