Native file workflows, source-projection Markdown editing, automated frontend and Rust verification, and a packaged Windows alpha release.
Open-source, local-first Markdown desktop editor for ordinary files and folders, built around one hybrid reading and editing surface.
Shared contracts, coordinated session renewal, direct-to-storage avatar uploads, automated tests, and deployment on Fly.io.
Full-stack link-in-bio application built as a Next.js and Express monorepo.
Delivered one tested Rust core as a browser-based Wasm tool and a parallel native CLI, with direct validation from a RimWorld modder.
Web and Windows CLI tool that removes texture artifacts from transparent game sprites.
Published npm package for lifecycle-aware CSS transitions, keyed lists, and keyed component switches, with Storybook documentation and automated tests.
React transition library inspired by Vue, built around CSS and lifecycle coordination.
Delivered a browser-only pipeline for game-ready PNG, BMP, and TGA portrait sets, backed by Vitest tests and cross-browser Playwright workflows.
Local-first RPG portrait editor with multiple built-in game presets, reusable custom formats, and exact browser-side exports.
More than 1,000 Marketplace installs; the project includes more than 100 icon definitions, a public catalog of every icon, and tag-triggered publishing.
16×16 pixel-art file icon theme for VS Code, with broad coverage of languages, tooling, and folders.
A published npm package, Node.js, Rust, and Swift bindings, ten GitHub releases, and three merged external pull requests.
Lua 5.4 grammar for Tree-sitter, with a stateful C scanner for strings and comments with variable delimiters.
I'm Ademir, a software engineer. I enjoy turning specific problems into clear, reliable products that are pleasant to use. I'm especially interested in productivity tools, local-first software, and software built for communities.
I currently develop Leafdown, an open-source Markdown desktop editor built with React, Rust, and native filesystem integration. I also built and deployed Nexus, a full-stack application with authentication, shared contracts, PostgreSQL, automated tests, and CI/CD.
Work such as Crop & Quest and Fix My Halo grew from real problems faced by players and creators, while Pixel Icons surpassed one thousand installs on the Visual Studio Marketplace. This combination of engineering, product thinking, and practical usefulness is the kind of work that interests me most.
Education
Computer Science
Languages
Portuguese (Native) / English
Location
Laguna/SC, Brazil
Contact
Have a product to build, a workflow to improve, or a team that values careful engineering? Let's talk.