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qusai yousef

@qusaiyousef

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Software engineer at Sky Systems who developed merchant storefronts and contributed to a multi-tenant coupon platform.

Yemen

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At Sky Systems, I built and maintained websites connected to backend APIs, and developed a Flutter storefront for browsing and purchasing products from participating stores. I also implemented product catalog and search experiences using React, REST APIs, and PostgreSQL-backed services.

I contributed to a SaaS promotion platform with coupon validation, prize workflows, and shared-database multi-tenancy with tenant-level data separation. I’ve also developed SaaS booking and accounting workflows in Flutter and ASP.NET, and a student grade management application using C# and MySQL.

Experience

Work history, roles, and key accomplishments

Software Engineering Intern

Sky Systems

Built and maintained websites integrated with backend APIs, developed a Flutter merchant storefront, and implemented product catalog and search features. Contributed to a SaaS promotion platform with multi-tenancy and coupon validation workflows.

React Flutter PostgreSQL REST APIs TypeScript Tanstack Query SaaS Multi tenancy

Full-Stack Developer

Sky Systems

Developed a TypeScript, React, and Node.js platform for promotional campaigns and coupon codes, implementing validation rules and safeguards against duplicate redemptions.

TypeScript React NodeJS PostgreSQL Multi tenancy

Frontend / Mobile Developer

Sky Systems

Built a Flutter merchant storefront and React interfaces connected to REST APIs and PostgreSQL, using TanStack data access patterns and clean project structure.

Flutter React REST APIs PostgreSQL Tanstack Query