Open app ↗Software engineer · GoldevLab
Golfredo Pérez Fernández
Backend, Web3, and resumable product craft — silver glass tools that ship.
Selected work
Products and client builds — open any card for the live site.
- ProductYouTubeForgeTranscripts, audio, SRT, translation, and chapter recaps from public captions.
ProductUnderKbCompress images to a real kilobyte budget — JPG, WebP, PNG.
ProductACUPATASPet care marketplace in Venezuela — verified caregivers, biometrics, audited payments, and secure chat.
Web3KoolinartKNRT Property — tokenize, trade, and manage real-world assets on the Koolinart Chain.
ProductPDFForgeMerge, split, compress PDFs. JPG ↔ PDF and extract text.
ProductMoa AcademyLearning platform for language courses — community, instructors, and practice toward fluency.
Stack
Rust and TypeScript in production — Resuma for microsaas, Qwik for large PWAs. Open Docs for the official reference.
- CoreRustSystems language for Resuma apps, APIs, and Fly binaries.
- CoreTypeScriptTyped frontends for Qwik products — ACUPATAS, MOA, Koolinart.
- FrameworkResumaResumable Rust SSR — FlowApp, islands, HtmlTheme, View Transitions.
- FrameworkQwikResumable JS SSR for large client apps and PWAs.
- BackendAxum + TokioAsync HTTP and middleware next to Resuma routes.
- BackendNode + ViteTooling for Qwik City builds and client bundles.
- DataPostgreSQLRelational data for product apps that need durable state.
- DataSQLiteLocal and single-node tools — job bots, light services.
- DomainWeb3 / EVMTokenized assets, wallets, and on-chain product surfaces.
- PlatformPWAInstallable apps — manifest, service worker, offline shell.
- PlatformFly.ioProduction deploys for Resuma and Qwik services.
- PlatformDockerReproducible images for Fly and CI pipelines.
FAQ
Short answers about Goldev, the stack, and how to work together.
What is Goldev?
Goldev is the personal brand and portfolio of Golfredo Pérez Fernández / GoldevLab — selected products, client builds, and the stack behind them.
Rust or TypeScript — which do you use?
Both, on purpose. Resuma + Rust for microsaas tools that ship fast (YouTubeForge, UnderKb, PDFForge, and sisters). Qwik + TypeScript for larger product PWAs (ACUPATAS, MOA, Koolinart).
Are you available for hire or collaboration?
Yes — backend, Web3, and product craft. Email is the best channel; include context, timeline, and links if you have them.
What is Resuma?
A resumable Rust SSR framework (FlowApp, islands, HtmlTheme, View Transitions) used to build the GoldevLab microsaas suite. Docs live at resuma-docs.fly.dev.
Where can I try the tools?
Use the Live apps carousel on the home page, or Selected work / Work — each card opens the production URL (forgeyt.com, under200kb.com, and Fly-hosted tools).
How do I get in touch?
Email golfredo.pf@gmail.com, or reach GoldevLab on GitHub and LinkedIn. The Contact section below has direct links.
Contact
Projects, collaborations, or a quiet note — email is the fastest path.