LIVE: React Fullstack 5yr OPEN Financial Technologies Interview Recording 2025 | Round 2 Technical

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🎯 In this video:
🚀 LIVE Interview Recording – Round 2 (Technical) | OPEN Financial Technologies 2025

In this video, we share the Round 2 Technical Interview experience for a React Fullstack Developer (5 Years Experience) at OPEN Financial Technologies.

This round focused on backend architecture, performance optimization, databases, system design, caching, concurrency, and real-world scalability problems.

👨‍💼 Interviewer: Mohammed Faris
🎯 Role: React Fullstack Developer (5 Yrs Exp)
📍 Mode: Virtual Technical Interview
🏢 Company: OPEN Financial Technologies

🔥 Topics Covered in Round 2

✔ Backend performance optimization
✔ High latency API debugging strategies
✔ Laravel, PHP, Node.js architecture decisions
✔ SQL query tuning & composite indexing
✔ MySQL transactions, locks, deadlocks & ACID
✔ Concurrency handling in banking systems
✔ Redis & Memcached caching strategies
✔ DDoS protection & rate limiting techniques
✔ SQL vs NoSQL real-world use cases
✔ MongoDB vs MySQL for logging systems
✔ Dependency Injection best practices
✔ Package creation in PHP & NPM
✔ System design storage decisions (MySQL vs S3 vs Cache)
✔ PHP version upgrade challenges
✔ Redis infrastructure & expiry handling
✔ Linked List cycle detection (Floyd’s Algorithm)
✔ Engineering culture & team structure discussion

This interview is extremely useful for:

🎯 React Fullstack Developers
🎯 Backend Developers (PHP / Node.js)
🎯 System Design Interview Preparation
🎯 Product-Based Company Interviews
🎯 5+ Years Experience Candidates

📥 Get Full Interview Questions PDF

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