"Cem Deniz Demir"

• ▸Engineered and deployed efektanet.com⁠, a production-grade portfolio platform for Efekta Architecture; integrated GSAP and Framer Motion to deliver high-fidelity UI animations while achieving 40% faster page loads.
• ▸Architected a multilingual (TR/​EN) platform with i18n support and interactive geospatial visualization across 50+ countries.
• ▸Managed complex client-side state using Zustand stores and React Context API, implementing optimistic updates, scroll position persistence, and lazy-initialized data fetching for the admin dashboard.
• ▸Enforced end-to-end type safety with TypeScript and Zod schema validation for all API request/​response payloads and form submissions, eliminating runtime type errors.
• ▸Implemented a secure admin dashboard with full CRUD operations, multi-image upload.
• ▸Built 8+ RESTful API endpoints for content management, authentication, and image processing.
• ▸Integrated Cloudflare R2 storage and CDN with automated WebP conversion, reducing asset sizes by 35% and improving image delivery speed by 50%.
• ▸Optimized database layer using Prisma ORM with 3+ schema migrations, reducing query response times by 45%.
• ▸Wrote end-to-end test suites using Playwright covering authentication flows, protected routes, and API security validation.
• ▸Deployed and maintained the application on Vercel with automated CI/​CD pipelines, achieving 99.9% uptime.

• ▸Built bakiciste.com
• ▸Developed the frontend of a credit-consultancy survey application, enabling secure data collection and improving completion flow for users.
• ▸Designed and implemented responsive dashboards for an internal office reporting tool, which simplified reporting and reduced manual steps for staff.
• ▸Built a reusable frontend project template integrated with REST APIs that reduced setup effort for future projects and improved consistency across products.
• ▸Delivered the public site and caregiver/client registration flows for a caregiving services platform, enhancing usability on desktop and mobile.
• ▸Added new features and refactored legacy code for a CRM service provider's website to improve maintainability, reduce errors, and enhance performance.
• ▸Handled IT support, including device troubleshooting, data backups, and onboarding/offboarding processes, helping keep internal operations reliable.

• ▸Learned and applied React, Next.js, TypeScript, and Tailwind CSS in internal projects, contributing small features and bug fixes that were used in production.

• ▸Developed a responsive, UI-focused commercial website using vanilla JavaScript, HTML, and CSS on top of an Express.js and MongoDB backend.
• ▸Wrote custom JavaScript functions to handle dynamic interface interactions and ensure cross-browser consistency without heavy libraries.
• ▸Delivered a mobile-friendly, UX-driven layout with smooth navigation and optimized rendering for faster load on low-end devices.
• ▸Later migrated the backend to Laravel for cleaner structure and easier long-term maintenance.
• ▸Contributed additional requested features and improvements across other client projects, supporting both frontend and backend needs.

• ▸Built simple console applications in C to learn core fundamentals.
• ▸Developed small Java and C# apps with database connections.
• ▸Created Arduino programs in C++ for hardware coursework.

// Next.js | TypeScript | Prisma | NextAuth

• ▸Developed a reusable Next.js + TypeScript template with Prisma and NextAuth for authentication, session handling, and profile management in both server and client components.
• ▸Built safe-parse actions, dynamic login/signup forms, automatic OAuth–credentials account linking, and a chained middleware stack: rateLimiterMiddleware, securityHeadersMiddleware, authMiddleware, loggerMiddleware.
• ▸Implemented nonce-based security headers, environment-driven configuration, and authentication-aware redirects.
• ▸Added profile features for editing data, merging or deleting accounts, and one-click logout.

// Next.js | TypeScript | TailwindCSS | i18n

• ▸Built a frontend-only file system interface with dynamic navigation and backend-linked data via unique IDs.
• ▸Implemented internationalization (i18n) for multi-language support.
• ▸Designed modular components and client-side rendering for performance and scalability.
• ▸Created a clean, responsive UI with TailwindCSS and structured TypeScript code.