13579bd
2025 - Present
commit: experience/1
Databricks · Senior Software Engineer
Working on Databricks AppKit
+ JavaScript + TypeScript + React + Node.js + PostgreSQL
SOFTWARE ENGINEER · TOOLING · TERMINAL UX
I'm Mario Cadenas.I build developer toolspeople love to use.
From lint systems to test infrastructure and CLI workflows, I turn painful engineering loops into fast, elegant product experiences.
9+
Years shipping
20+
DX initiatives
∞
Terminal sessions
Selected Work
A straight run through things I've shipped.
Swipe sidewaysPeek of the next case study hints there's more in this row.
Case 01
↗Databricks AppKit
Build Databricks Apps faster with a Node.js + React SDK—designed for humans and AI.
TypeScriptReactNode.js
Case 02
↗Playwright Related Tests
This package provides a way to run only the tests that are related to the changes in a PR.
PlaywrightTypeScriptAWS
Case 03
↗Eslint Plugin Lodash Imports
ESLint plugin to modify lodash imports as lodash encourages to do.
JavaScriptESLint
Case 04
↗VSCode Alias Resolver
Extension to resolve aliases in VSCode, from other sources than tsconfig.json (like webpack aliases).
JavaScriptVSCode
Case 05
↗Vite Plugin CSS Sourcemap
Vite plugin to generate sourcemaps for css files.
TypescriptVite
Experience
A timeline of teams and tooling impact.
mario@career:~$ git log --graph --decorate --oneline --experience
2468ace
2025 - 2025
commit: experience/2
Neon (Acquired by Databricks) · Full-Stack Engineer
Working on App.build.+ JavaScript + TypeScript + React + Node.js + AWS + PostgreSQL
3579bdf
2019 - 2025
commit: experience/3
New Relic · Lead Software Engineer
Developed tools and systems to enhance developer productivity and code quality.+ JavaScript + TypeScript + Node.js + React + AWS + Docker
468ace10
2019-2019
commit: experience/4
Worked at X By Orange as a Frontend Engineer.+ JavaScript + NextJS + React + Cypress + Storybook
579bdf11
2017-2019
commit: experience/5
Vocento - Meytel · Full-Stack Engineer
Developed the Ads library used in each of the company's websites.+ JavaScript + PHP + Symfony + Wordpress + MySQL
Tools & Technologies
A signal grid of what I build with.
Languages & Core
JavaScript
Primary Language
TypeScript
Type System
NodeJS
Runtime Environment
Frontend & Frameworks
React
UI Library
NextJS
React Framework
TailwindCSS
CSS Framework
Infrastructure
AWS
Cloud Platform
Docker
Containerization
PostgreSQL
Data Store
Developer Tools
Codemods
Code Transformation
AST
Abstract Syntax Tree
ESLint
Static Analysis
Let's build something useful
Need someone who obsesses over developer experience?
I'm open to hear about new opportunities for product engineering and platform/tooling roles where quality, speed, and developer happiness matter.