filmncode_

Full-stack engineer & product builder.

I’m Mauro Barrionuevo. Frontend lead at Egg Live, building Hormi and Mentora. I cover frontend, backend, and the LLM work in between.

Mendoza, Argentina · GMT-3 · overlaps the US Eastern day

About

Hi, I’m Mauro — a full-stack engineer with a background in graphic design and a camera always in the bag.

I’ve been on the web since 2009: first designing and building websites, then from 2019 building web apps. I lead frontend at Egg Live and work across React, TypeScript, Node, Postgres, and cloud. I like owning the whole loop: what to build, how it should feel, and whether it holds up.

I started in design, so I still care about the interface as much as the system behind it. I consider myself a generalist: I have rarely been the deepest person in any one layer, and I have almost always gotten the thing out the door. I care about the business, not only the code. I learn the domain, sit with product, and say no to work that doesn’t earn its place.

I adopted AI early and I still like it for the same reason: it lets people make more. I use it every day. I direct it, I review it, and I keep the architectural calls.

The camera in the bag is not a figure of speech. Some of the photos are here.

Projects.

Frontend lead · since 2019
Built the product UI from scratch and the design system behind it, and grew a team of three. Years of making a live video product hold up: scale, concurrency, performance, and low-end devices. Lately, Zoom Video SDK and AI inside the platform.
ReactTypeScriptstyled-componentsStorybookZoom SDKRead more
Founder · live since 2024
WhatsApp-native household expense tracking. Text, receipts, and voice notes go through LLMs; the household shares a live dashboard. Built end to end: web app, messaging, billing, and an MCP server.
TypeScriptReactNext.jsNodePostgreSQLLLMsRead more
Founder · building now
AI exam generator and classroom product: create exams, run virtual classrooms, track student progress. React frontend, Node/Express API, Postgres, Google OAuth, LLM generation and grading.
ReactTypeScriptExpressPostgreSQLLLMsRead more

Stack

What I use to ship.

Frontend

TypeScript, React, Next.js, Vite, Tailwind CSS, styled-components, Radix / shadcn/ui.

Backend & data

Node.js, Express, Python, PostgreSQL, MongoDB, REST APIs.

Cloud & AI

Vercel, AWS, Cloudflare, GitHub Actions. LLMs in production, Claude Code in the daily loop.

Contact

Let’s work together.

If you have a product in mind, or a team that needs someone who can own a surface end to end, write to me.

Emailmauroeloy03@gmail.comGitHubgithub.com/filmncodeLinkedInlinkedin.com/in/mauro-barrionuevoCVcv.filmncode.com