Fernando Oviedo
Full-Stack Developer · AI, real-time and collaborative systems · 8+ years · former Tech Lead
Freelance & Contractor work | Build your ProductNot clones, not to-do apps: my own products, with real users and technical decisions I had to defend.
Online detective game: solve criminal cases as a team
Live in production, with accounts and payments
Web-based criminal case game in the style of a collaborative escape room. Multiple detective UI tools plus a digital investigation board.
React · Node.js · TypeScript · Docker
Call center candidate screening with an AI-simulated shift
In pilot with contact centers
B2B platform for contact centers: the candidate works a real shift on a simulated help desk, with tickets, policies and a customer who reacts over chat. The recruiter gets a report with evidence, never an automated verdict.
Next.js · Mastra · OpenRouter
Study assistant for Argentine university students, organized by degree
Live, early stage
Students build the map of their degree with its prerequisites, upload their notes per subject and study with an AI that explains, asks questions and cites the page behind every answer. It works for social-science degrees and for math-heavy ones.
Next.js · Mastra · Vercel AI SDK · OpenRouter · Clerk · Drizzle ORM · PostgreSQL · React Flow
Spoken-English AI coach, built as an RPG
In private beta, with user accounts
App for training spoken English with an AI coach that answers out loud and corrects you without breaking the conversation. Real-time generative UI. Every session earns XP, levels you up and unlocks branches of a skill tree.
Gemini Live · Next.js · TypeScript · Vercel AI SDK · OpenAI · PostgreSQL
AI agents that write stories and novels
In private beta
Web app with multi-step agents that take a brief, plan chapters and generate complete novels while keeping plot and character continuity across the whole book.
Next.js · TypeScript · Mastra · Vercel AI SDK · pgvector
Playable browser FPS shooter
Playable demo, no plugins or downloads
First-person shooter demo running entirely in the browser. Testbed for the web game engine I build with three.js, drei and TypeScript.
React · Three.js · drei · TypeScript
Sites I design and build for others, from idea to deploy.
Editorial portfolio for a fashion and music photographer
Client project, live
The site for Joel, a photographer and filmmaker who until then only had Instagram. Covers, editorials and live music told as a scroll story, built with Astro, GSAP and Lenis and no UI framework on the client.
Astro · GSAP · TypeScript · Docker · Dokploy
Site and inquiry back office for a pest-control company
Client project, live
The site for a pest-control and disinfection company in Guaymallén, Mendoza, built so people find it on Google and reach it on WhatsApp. It includes a pest guide, zone pages and an admin panel, built with Next.js, Clerk and Drizzle.
Next.js · TypeScript · Tailwind · PostgreSQL · Clerk · Drizzle ORM · Docker · Dokploy
What I ship to production every day
I'm Fernando, an engineer from Buenos Aires with 8+ years shipping products to production and experience as a Tech Lead. I work where software gets hard: AI agents, real-time collaboration, and architectures that have to survive growth. The difference is I don't hand over isolated features - I design, build and operate the whole product.
Get to know meTell me what you're about to build and we'll see if I'm a fit.
