@gsmt

Gilberto

IPA /ˈɡɪlbət/— software developer, maker.

00.0k page views

TodayApril 13

Developer at heart, passionate about building a better web, creating great experiences for end users, and trying to solve real-world problems with an eye for design. I'm also a fan of open-source software, and cool looking watches .

Introduced to technology at a young age, I have been building software for over 3 years now. Playing with prototypes and doing everything from data scrapers , dynamic websites and APIs, charmful native applications, shaders, fractal simulations, data visualizations, engaging in-app experiences and more. Outside of programming, I enjoy doing photography and traveling .

Why me?

A senior designer costs you $100K+ before benefits, equipment, and management overhead, and you still only get one skill set. With me, you get a designer, a developer, a strategist, and a creative director for less than a single hire. Little onboarding, minimal ramp-up.

Experience

@gsmt

Gilberto

IPA /ˈɡɪlbət/— software developer, maker.

34.3k 00.0k page views

gsmt.dev@gmail.com

Twitter GitHub

TodayApril 13—

Why me?

Experience

itemIQ

Built the platform foundations for Amazon FBA and FBM sellers, replacing spreadsheet-heavy catalog workflows with automated profit analysis, opportunity detection, and smart restocking. I designed and implemented core backend and data pipelines across Python and TypeScript for ASIN ingestion, SP-API integration, fee and margin computation, and issue detection, helping sellers monitor thousands of ASINs, catch suppressed Buy Boxes or miscategorized listings, and save money.

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Infactura

Led development of Infactura, an online invoicing platform for freelancers and SMEs in Spain focused on compliant electronic invoicing, faster payments, and alignment with AEAT, VeriFactu, and EU requirements. Built the multi-tenant app with TypeScript, React, Next.js, Prisma, and Postgres, including invoice templating, recurring billing, payment links, tax logic, automated dunning flows, and a strong emphasis on polished UX, typography, and branded documents.

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Cache

Created Cache, a browser-first app that brings bookmarks and saved content from different platforms into one searchable workspace. I focused on dependable ingestion pipelines, metadata normalization across sources, and fast client-side search and filtering, using modern React patterns, and a Postgres-backed sync layer to keep high-volume personal knowledge management responsive.

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MinuteDebate

Built MinuteDebate, a real-time debating game where two anonymous players argue a randomly assigned topic for 60 seconds each while an AI judge scores persuasion and coherence. I designed the game loop, low-latency real-time interactions, the interface, and the LLM-powered evaluation pipeline so players receive instant, structured feedback.

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gsmt

Designed and developed gsmt as both my portfolio and a live playground for interaction design, typography, and performance experiments. It works as a testbed for animations, layout systems, and reusable component abstractions that later inform production work, while staying minimal, fast, and content-first.

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Developer Tools & UI Utilities

Built focused tools for developers such as cleaning-mode, an Electron utility that temporarily disables keyboard and touch input so devices can be cleaned safely, alongside libraries like use-selectify, use-gif, and react-bypass. These projects reflect my interest in ergonomic APIs, well-scoped abstractions, and closing the gap between interaction design and implementation.

cleaning-mode use-selectify use-gif react-bypass

Creative Coding & Simulations

Created a range of creative coding experiments including Mandelbrot renderers, chaos-equation visualizers, shaders, and fluid and particle simulations. These explorations pushed my understanding of WebGL, canvas, numerical methods, and browser performance while sharpening my instincts for data visualization and motion aesthetics.

mandelbrot chaos-equations fractals