Muhammad Saleem
@connecwithmsaleem
Senior Full Stack Engineer | AI-Powered SaaS | Ruby on Rails | React | Vue | Distributed Systems
What I'm looking for
I am a senior full-stack software engineer with a focus on building high-performance web applications using Ruby on Rails, React, and Node.js. I deliver pragmatic, maintainable solutions that improve user experience and system reliability.
Across remote and distributed teams I have driven measurable improvements — cutting load times by 50%, achieving over 90% test coverage, and deploying resilient background processing and caching strategies. I built web scrapers, payment workflows, and AI-driven agents to automate support and data collection.
My work spans frontend and backend design, API development, third-party integrations (Stripe, Shopify, marketplaces), and DevOps (Docker, Kubernetes, AWS). I emphasize clear API contracts, automated testing, CI/CD pipelines, and efficient database design with PostgreSQL, MySQL and MongoDB.
I enjoy mentoring engineers, conducting thorough code reviews, and collaborating across product, mobile, and operations teams to deliver production-grade systems. I seek opportunities to build scalable products and grow technical teams.
Experience
Work history, roles, and key accomplishments
ThriveCart is a SaaS platform serving creators and online businesses with tools for selling products, courses, and memberships. As a Senior
Software Engineer, I contributed to ThriveAI by building scalable platform capabilities for AI content generation, digital
asset management, embedded editing experiences, and cross-product integrations spanning multiple Thrive applications.
Full Stack Developer
Dragonfly Tech, Inc
Nov 2024 - Sep 2025 (10 months)
Contributed to full-stack development of a scalable food delivery platform, built web-scraping tools to keep restaurant menus current, and integrated Uber Delivery, Stripe and Braintree to enable real-time logistics and secure payments.
Engineered backend architecture and core features in Ruby on Rails for the flagship transportation product, optimized queries and caching to reduce load times by 50%, and achieved 90%+ test coverage with RSpec to improve reliability.
Software Engineer
Stackup Technologies
Feb 2019 - Apr 2023 (4 years 2 months)
Planned backend/frontend architecture and implemented APIs for chatbots and events modules, migrated AJAX to websockets for real-time updates, and integrated Stripe Connect to streamline payment flows.
Education
Degrees, certifications, and relevant coursework
COMSATS University Islamabad
Bachelor of Science, Computer Science
Bachelor of Science in Computer Science from COMSATS University Islamabad.
Tech stack
Software and tools used professionally
OpenAPI
Sidekiq
Microsoft Azure
DigitalOcean
GitHub
Kubernetes
CircleCI
MySQL
PostgreSQL
MongoDB
Shopify
Gmail
Node.js
Django
Ruby on Rails
NestJS
Material-UI
Google Analytics
Redis
Mocha
React
JavaScript
HTML5
ES6
Sequelize
Stripe
PayPal
Heroku
GraphQL
Capistrano
TypeScript
RSpec
Docker
Twilio
QuickBooks
Amazon Web Services (AWS)
Braintree
TestRail
Railway
Helcim
Availability
Location
Authorized to work in
Job categories
Skills
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