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AI Art Generator (Full-Stack Next.js Application)
Built and deployed a production-ready web application that generates images from text prompts using distributed GPU networks and multiple AI models.
Engineering Challenges Solved:
Distributed AI Networks: Integrated the AI Horde API to offload generation to a global volunteer GPU network, eliminating cloud GPU hosting costs while maintaining high availability.
Multi-Provider Architecture: Designed a modular provider system supporting Stable Diffusion 1.5, SDXL, and Flux models, allowing users to switch between models seamlessly.
Async Job Handling: Implemented robust asynchronous polling to handle queued jobs, status updates, and graceful degradation during peak network load.
Production Deployment: Built with Next.js 14 (App Router) and TypeScript, deployed on Vercel with CI/CD pipelines.
Tech Stack: Next.js 14, TypeScript, Tailwind CSS, AI Horde API, Replicate API.
The network for creativity
Join 1.25M professional creatives like you
Connect with clients, get discovered, and run your business 100% commission-free
Creatives on Contra have earned over $150M and we are just getting started
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A client wanted me to restore a WordPress site from a zip backup and asked for one thing before paying: a screenshot of the site running on my own computer, with localhost in the address bar.
Loading a WordPress site runs its PHP on whatever machine serves it. So I read the zip with a script first and didn't extract it.
WordPress core matched the official checksums. In wp-content/mu-plugins, though, there was a file that looked for a 4.6 MB "JPEG" in uploads, renamed it to .exe and tried nine ways to launch it. The first two bytes of that "JPEG" were MZ, which is how a Windows executable starts. Opening localhost for the screenshot would have been enough to run it.
My first script missed it because it trusted file extensions. Now it reads the first bytes of every file.
The write-up has the loader code and the checks I now run before importing a backup I didn't make. If the same file reached you, the SHA-256 hashes are at the end.
https://helban.dev/en/case-studies/fake-wordpress-backup-malware/
The MZ check is such a good catch. Worth adding for anyone restoring sites: mu-plugins run on every request and can't be switched off from the dashboard, so they're a favourite hiding spot. Did the client ever reply after you flagged it?