Open to opportunities

Saleem Muhammad

@saleemmuhammad

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Senior full-stack software engineer specializing in Ruby on Rails, React and scalable web architectures.

Pakistan

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What I'm looking for

I seek a senior full-stack role building scalable Rails/React systems, owning APIs, mentoring engineers, and delivering high-quality, production-grade software in an agile team.

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

Full Stack Developer

Chowbus

Nov 2024 - Apr 2025 (5 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.

Ruby on Rails Python Selenium PostgreSQL Redis Stripe Braintree Web Scraping

Senior Backend Engineer

Transreport Limited

May 2023 - Oct 2024 (1 year 5 months)

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.

Ruby on Rails PostgreSQL Redis Sidekiq RSpec OpenAPI Docker Kubernetes

Full Stack Developer

Jess

Jan 2022 - Feb 2023 (1 year 1 month)

Designed interactive React dashboards and optimized modules across Rails, Node and React stacks, integrated Stripe and marketing APIs to improve transaction reliability and lead-tracking accuracy.

React Ruby on Rails Node PostgreSQL Redis GraphQL Stripe Google Facebook APIs

Software Engineer

Stackup Technologies

Feb 2019 - Jan 2022 (2 years 11 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.

Ruby on Rails PostgreSQL MongoDB WebSockets Stripe Docker