Hi, I’m Karim ShaabanFull-Stack Software Engineer

karim@portfolio:~$ tree ./skills

• ├──›education/Education4 files
  • │ ├──Arab Academy for Science, Technology and Maritime Transport (AAST)
  • │ ├──BSc in Computer Engineering
  • │ ├──2020–2025 (one preparatory year)
  • │ └──GPA: 3.7 – Excellent with Grade of Honor
• ├──›achievements/Achievements2 files
  • │ ├──Top 3% of students in the Egyptian General Secondary Certificate (2019).
  • │ └──Honorable Mention in the AAST Competitive Programming Contest.
• ├──›languages/Programming Languages & Concepts2 files
  • │ ├──JavaScript, TypeScript, Java, C#, Python, C++ and PHP.
  • │ └──Object-oriented programming (OOP), data structures and algorithms, system design and cloud computing.
• ├──›dsa/Data Structures, Algorithms & Problem Solving2 files
  • │ ├──Solved problems covering arrays, intervals, strings, binary search trees, trees, graphs, hashing and more.
  • │ └──Comfortable with common problem-solving patterns: sliding window, two pointers, backtracking, recursion and greedy algorithms.
• ├──›frontend/Front-End Development3 files
  • │ ├──React.js and Next.js for fast, interactive, server-rendered user interfaces; also Angular and Vue.js.
  • │ ├──Tailwind CSS, shadcn/ui and DaisyUI for consistent, maintainable styling.
  • │ └──Accessible (WAI-ARIA), responsive, mobile-first design.
• ├──›backend/Back-End Development6 files
  • │ ├──Node.js, Express.js and NestJS for REST APIs and back-end services; also Spring Boot, Laravel and ASP.NET.
  • │ ├──PostgreSQL, MongoDB, Redis and Elasticsearch, including indexing and caching.
  • │ ├──Authentication and authorization with JWT and OAuth, role-based access control, OTP flows and rate limiting.
  • │ ├──Real-time IoT communication over MQTT/MQTTS.
  • │ ├──Cloud and third-party integrations such as AWS S3 and SNS.
  • │ └──Microservices with event-driven messaging (NATS Streaming) and optimistic concurrency control.
• ├──›cloud-devops/Cloud Computing & DevOps3 files
  • │ ├──Deploying applications on AWS, GCP and Vercel, including serverless back-ends.
  • │ ├──CI/CD pipelines with GitHub Actions.
  • │ └──Containerization and orchestration with Docker, Kubernetes (K8s), Skaffold and NGINX.
• ├──›security/Security & Performance4 files
  • │ ├──Protecting applications against OWASP Top 10 threats, including XSS, SQL/NoSQL injection and CSRF.
  • │ ├──Mitigating DoS/DDoS attacks with rate limiting.
  • │ ├──Optimizing application and database performance with indexing, query optimization and Redis caching.
  • │ └──Designing applications for scalability, maintainability and high availability.
• ├──›seo/Technical Search Engine Optimization2 files
  • │ ├──Improved Core Web Vitals (LCP, INP, CLS) and cut a client homepage from 8 MB to 1 MB.
  • │ └──Reached first place on Google search results for a client website.
• ├──›spoken-languages/Spoken Languages2 files
  • │ ├──English: C1 (TOEFL iBT 5/6)
  • │ └──Arabic: native
• ├──›certificates/Certificates5 files
  • │ ├──Meta Front-End Developer ↗
  • │ ├──Meta Back-End Developer ↗
  • │ ├──Algorithmic Toolbox ↗
  • │ ├──Data Structures ↗
  • │ └──Psychology ↗
• └──›courses/Audited Courses11 files
  • ├──Build Responsive Real-World Websites with HTML and CSS ↗
  • ├──Advanced CSS and Sass ↗
  • ├──Node.js, Express, MongoDB ↗
  • ├──SQL and PostgreSQL ↗
  • ├──The Ultimate React Course ↗
  • ├──The Complete JavaScript Course ↗
  • ├──Microservices with Node.js and React ↗
  • ├──TypeScript: The Complete Developer's Guide ↗
  • ├──Agile Fundamentals: Scrum, Kanban, Scrumban ↗
  • ├──Git and GitHub Bootcamp ↗
  • └──The Nuts and Bolts of OAuth 2.0 ↗

12 directories