FULL STACK ENGINEER TOURISM & ENTERPRISE SYSTEMS
Hassan Ayman — Full Stack Engineer specializing in building enterprise-grade Tourism & Logistics Management Systems using Next.js, TypeScript, and PostgreSQL.
Beyond the Code
I specialize in building Enterprise Tourism & Logistics Systems — from PostgreSQL schema design to production-ready Next.js APIs.
I own the full engineering lifecycle: gathering client requirements, designing database architecture, building type-safe APIs, and handing off documented codebases. I've delivered systems handling 500+ vehicles, 5,000+ travelers, and 2,000+ monthly bookings — with Zod validation at every API boundary to prevent data corruption in high-stakes environments.
Enterprise Systems Built
Years Prof. Experience
Global Clients
Core Architecture
Backend & DevOps
Frontend & UI
What I Bring to the Table
Full Stack Solutions
End-to-end web applications built with Next.js, implementing complex business logic, secure authentication, and seamless database integration.
API Architecture
Designing type-safe, scalable REST & GraphQL APIs with Zod validation, ensuring data integrity and high-speed communication.
Responsive Design
Crafting seamless experiences across all devices, ensuring your brand looks exceptional on everything from mobile to ultra-wide displays.
SEO & Digital Marketing
Optimizing web structures for search engines and implementing digital strategies to maximize visibility and user engagement.
Engineering Impact & Professional Journey
Full Stack Engineer
Tera Trav (Full-Time)
Contributed to building the Tourism Management System (TMS) — collaborated on PostgreSQL schemas with Prisma, helped engineer Zod-validated booking APIs in Next.js 15, and integrated Mapbox, Cloudinary, and Redis-backed rate limiting. Coordinated directly with stakeholders to translate business rules into API contracts managing 500+ vehicles and 2,000+ monthly bookings.
Tera Trav System
Collaborated on the full-stack system, developing complex vehicle rental algorithms, hotel inventory management, and the underlying database architecture.
Technical Consultant
True Dream Travel
Played a key role in architecting the Hajj & Umrah Management System — helped design Prisma/PostgreSQL schemas for 5,000+ traveler logistics, contributed to automated PDF invoicing via Puppeteer, and implemented QR-coded booking records. Reduced manual operational overhead by 30% through automated recurring billing with node-cron.
True Dream TMS
Contributed to the enterprise logistics system, helping build complex pilgrimage booking APIs, hotel inventory schemas, and advanced state management.
Freelance Full Stack Developer
Independent Consultant
Delivered 6+ full-stack web solutions for international clients — handled discovery calls, wrote technical specs, built and deployed production systems. Achieved an average 40% SEO performance improvement across client sites through structured metadata, lazy loading, and Core Web Vitals optimization.
Leader Translation
Contributed significantly to the platform, building custom GSAP animations, a responsive UI architecture, and robust SEO-optimized multilingual support.
Rwad Almethaq
Helped architect the database using Prisma and PostgreSQL, implemented secure Clerk authentication, and contributed to advanced property filtering algorithms.
Full Stack Developer
Elkiser LLC (Ecommerce & Online Retail)
Collaborated on the full-stack financial management system for an e-commerce operation — helped design Express REST APIs with Zod schema validation, contributed to the database layer, and built dynamic Chart.js dashboards for real-time P&L tracking. Onboarded the internal team to the codebase and documented all API endpoints.
Cashflow HDMS
Collaborated on developing the system, including secure backend architecture, API integrations, and dynamic Chart.js data visualizations.
Markety Dashboard (First Demo Project)
Personal Development
Contributed to building the interactive dashboard application, helping engineer custom data visualization components and implementing global state management architectures.
Markety Dashboard
Collaborated on the frontend architecture, building highly interactive Chart.js visualizations and managing application state.
Tools & Engineering Workflow
Requirements & Schema First
Discovery calls with stakeholders → write technical specs → design the Prisma/PostgreSQL schema before touching a single UI component.
Zod-First API Design
Every API boundary is validated with Zod schemas before connecting to the database. Fail-fast at the edge, never let bad data reach business logic.
Feature Branch + CI
Git feature branches per task → PR review → merge to main. GitHub Actions runs linting and type-check on every push before Vercel deploys.
Handoff & Docs
Full API documentation, database schema diagrams, and onboarding guides delivered with every project so clients aren't locked into me.
Coding Activity
Let's Build Something
Exceptional
I'm always open to discussing new projects, creative ideas, or opportunities to be part of your visions.
hassanaymanelprens58@gmail.com
Cairo, Egypt