Architecting resilient microservices • Cloud-native systems • Performance-driven engineering

Master’s student at EPITECH (France) and Software Engineer with 3+ years of production experience building and scaling distributed systems for 100k+ concurrent users.

I specialize in backend architecture, microservices design, and cloud-native deployments — engineering systems that are fast, fault-tolerant, and business-impact driven.

📍 Based in France
🔎 Seeking 1-year alternance (Sept 2026) — Backend | Full Stack | DevOps | AI | Data

• 🥇 Gold Medal – AI Hackathon (elGrocer)
• 🏅 Top Performer 2024 – elGrocer
• 🏅 Best Team Performer 2025 – elGrocer
• 🎖 Delegate – EPITECH Class of 2026

• Reduced out-of-stock rate by 60% via Order Management re-architecture
• Increased user retention by 40%
• Achieved sub-200ms APIs under 100k+ concurrent load
• Reduced database load by 15% through Redis caching & query optimization
• Offloaded 40% monolith traffic via microservice extraction
• Implemented CI/CD pipelines reducing deployment friction & improving stability

Microservices • Distributed Systems • CQRS • SOLID • Clean Architecture • High Availability Design

Ruby on Rails • Node.js • .NET Core • Elixir (Phoenix) • RESTful APIs • Background Workers (RabbitMQ)

PostgreSQL • MySQL • SQL Server • MongoDB • Redis • Kafka • RabbitMQ

Azure • AWS • Heroku • Docker • Kubernetes • GitOps • CI/CD

NewRelic • MixPanel • Segment • Crashlytics • JMeter • Postman

Jul 2022 – Aug 2025

• Architected high-availability microservices using Ruby on Rails & Angular
• Re-engineered core Order Management with parent-child logic
• Migrated legacy monoliths to Azure using Docker containerization
• Designed scalable APIs serving 100k+ concurrent users
• Built CI/CD pipelines improving deployment velocity & reliability

Java backend + React (Vite) frontend
Real-time synchronization • Analytics dashboard • Scalable architecture

Java + React + WebSockets
Interest-based pairing engine • CI/CD on AWS

Elixir (Phoenix)
JWT-secured APIs • Dockerized deployment on AWS

I write about backend engineering, architecture patterns, and scaling systems:
👉 https://medium.com/@umarmahmoodshk

• GitHub: https://github.com/UmarMahmoodShaikh
• LinkedIn: https://www.linkedin.com/in/umarmahmoodshk/
• Medium: https://medium.com/@umarmahmoodshk

“Code is temporary. Architecture decisions define systems.”

I build systems that scale, fail gracefully, and create measurable business impact.