Mohammed Rafiq Abdulai

I'm a software engineer specializing in backend systems and full-stack development, with a proven track record of building platforms that scale to millions of users. First-class Computer Science graduate from KNUST with 3+ years of production engineering experience.

Key achievements:

• Engineered backend services processing 400GB data monthly, handling 1M+ requests, supporting 10,000 concurrent users

• Optimized MongoDB performance by 50% through strategic indexing improvements

• Built real-time systems with ~10ms latency using WebSockets and Pub/Sub architecture

• Architected Apache Kafka pipelines for high-throughput, low-latency data distribution

• Reduced issue resolution time from 1 week to 1 day through workflow automation

• Scaled personal projects to 1,000+ users and 3,000+ processed transactions

Technical expertise: Backend: Node.js, Python, PHP, Django, Laravel Databases: MongoDB, PostgreSQL, Redis, SQL Server Infrastructure: Azure, Kafka, WebSockets, Docker Frontend: React.js, Next.js, Flutter Practices: Security audits (SOC 2), CI/CD, monitoring, testing, technical documentation

I'm passionate about system design, performance optimization, and building robust distributed systems. I value engineering excellence, security, and creating solutions that have real-world impact. Beyond coding, I enjoy mentoring others—I've trained 24 developers who've gone on to secure tech roles.

Seeking backend or full-stack engineering positions where I can work on challenging technical problems, contribute to architecture decisions, and build systems that scale.