"Cognitive Scale" is an independent engineering consultancy specializing in high performance backend systems. I work directly with founders and product teams to build robust, scalable APIs designed to withstand real production loads without resource leaks or under pressure failures.
ASP.NET Core 8 · PostgreSQL · Stripe
A comprehensive hotel booking system built with clean architecture, featuring custom Snowflake 64 bit ID generation and secure Stripe payment processing to guarantee absolute consistency in financial transactions.
Token Exchange · Multi tenant Isolation · JWT
A centralized unified authentication platform leveraging token exchange and multi tenant data isolation, backed by strict audit logging for security and access control.
AWS · Docker & Docker Compose · Nginx
Deploying and monitoring systems on AWS infrastructure using managed Docker containers, configured with Nginx reverse proxies to ensure seamless runtime continuity isolated from local environment failures.
Strict layer isolation (Domain, Application, Infrastructure, Presentation) ensuring maintainability and unit testability independent of database details or frameworks.
Rigorous application of SOLID principles and design patterns (such as Repository Pattern, Factory, CQRS) to prevent spaghetti code as systems scale.
Optimized PostgreSQL schema design and Redis caching to minimize database load, paired with high precision concurrency controls.
If a simple refactor is enough for your system, I’ll tell you straight. I don't manufacture problems to upsell unnecessary rewrites.
I am Abdelrahman Alqudah, a Backend Software Engineer and system architect focused on building distributed systems. My work centers on integrating advanced architectural patterns like CQRS and Domain Driven Design (DDD) with robust tech stacks including ASP.NET Core and Laravel.
I believe true engineering isn't measured by tool fatigue, but by system resilience, code clarity, and efficient cloud resource utilization across AWS and Linux. If you're looking for an engineer who speaks raw backend without corporate fluff, you're in the right place.
Book a free 30 minute backend audit. No pitch, no pressure just an honest technical assessment.
Book a Free Backend Audit