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celldra/README.md

👋 Hey there!

I'm a full-stack developer with over 7 years of experience crafting scalable, high-performance systems, from e-commerce platforms and SaaS solutions to advanced networking tools and reverse proxies. I thrive on solving complex problems, building robust architectures, and continuously learning cutting-edge technologies. I’m a perfectionist who values precision and minimalism, ensuring every project meets the highest standards before it’s complete.


💼 What I'm Doing

  • Building ambitious projects that merge innovation with scalability.
  • Turning ideas into reality by developing entire SaaS platforms from scratch.
  • Exploring AI models and tuning them for practical applications.
  • Striving to reach my goals and grow both as a developer and a person.

💻 Languages I Work With

  • C#: My go-to for backend systems and RESTful APIs.
  • Go: For high-performance systems like reverse proxies and CDNs.
  • TypeScript/JavaScript: Frontend magic with frameworks like SvelteKit.
  • Rust: Exploring for high-speed, safe systems.
  • Python: For scripting, automation, and lightweight backend systems.
  • PHP: My starting point for web development.
  • C: Basic knowledge from working briefly with low-level systems.

⚙️ Frameworks & Tools

  • Frontend: Svelte/SvelteKit, Tailwind CSS, Bootstrap.
  • Backend: ASP.NET Core, Blazor, Flask, Prisma.
  • Desktop: WPF, Avalonia, (unfortunately) WinForms.
  • Infrastructure: Docker, Docker Compose, Redis, PostgreSQL, Argon2id.

🌟 Featured Projects

  • E-Commerce Platform:

    • Supports Stripe, PayPal, Cash App, Crypto, and various other card processors.
    • Features include OAuth2 integration, teams with ACL permissions, license key delivery, analytics, webhooks, and a public API.
    • Processes over $2,000,000 annually, $20,000+ and 1,500+ orders daily with ease.
    • Scales effortlessly, deployed on ARM64 Hetzner servers with Docker Compose.
    • Optimized pages with Cloudflare by leveraging custom caching and speed rules for enhanced conversions.
    • SEO Optimization: Implemented ld+json structured data for Google, adding review stars and product listings. This boosted the platform to #1 on Google for the company name.
  • DDoS-Protected CDN:

    • Custom Go-based reverse proxy, mitigating 3,000,000+ RPS on AMD Ryzen CPUs.
    • Included a custom DNS server, also written in Go, for advanced traffic routing.
    • Includes advanced caching (BadgerDB) and JavaScript-based bot detection.
    • A real-time dashboard propagates configuration changes across nodes instantly.
  • Hosting Platform (In Progress):

    • Integrated with Proxmox API for automated hosting solutions.
    • Fully custom, no pre-built dashboards, leveraging SvelteKit and C#.
  • Payment Processor:

    • Built a fully-fledged payment processor for a card acquirer, integrating with Prisma, BullMQ, and Redis.
    • Processes over $1,000,000 annually and over 600 successful orders a day.
    • Developed with SvelteKit and TypeScript for a seamless experience.
  • Email Infrastructure:

    • Designed and deployed an independent SMTP server to handle transactional emails for Cash App and PayPal payments.
    • Handles 500 transactions daily, sending 600-700 emails reliably on a single server.
    • Created email templates using MJML, Maizzle, and SendGrid, optimizing for deliverability and responsive design.

☁️ Cloud Experience

  • Cloudflare: Managed multiple websites, optimized cache rules, and implemented custom DDoS mitigation strategies.
  • AWS: Worked extensively with SES, Secrets Manager, and previously Lightsail.
  • Deployment Platforms: Experience deploying sites to Cloudflare Pages and Vercel.

✉️ Get in Touch

Feel free to reach out via my public email address listed on this profile.
Note: While I can't guarantee a reply, I’ll try to read your message.

Pinned Loading

  1. netCache netCache Public

    netCache is a simple, dependency injection friendly and persistant cache storage library

    C# 3

  2. website website Public

    My portfolio website

    CSS

  3. ToshiroZ/Discord-Webhook ToshiroZ/Discord-Webhook Public

    C# 13 3