Néstor Vanz

Software Engineer

About Me

I am a Software Engineer with over 15 years of experience specializing in web infrastructure, design systems, and digital accessibility at a global scale. Proven track record across the software lifecycle as a Systems Architect, Technical Lead, and DevOps Engineer, recently expanding into advanced AI engineering and Prompt Engineering to build intelligent, accessible-by-design enterprise applications.

My Skills

Frontend Development, Full-Stack Development, Backend Development, Database Architecture, Design Sytem Engineering, Accessibility Implementations, Development Leadership, Project Management, Agile Development.

Techs

React, Angular, JavaScript, TypeScript, Flow, CSS, Node.js, PHP, MongoDB, MS SQL Server, PostgreSQL, Kafka.

AI Implementations

I've gone beyond coding with AI, but making customs implementation to speed up development process and code maintainece.

Code Generation

Powered accessible code generation at Meta using a routing-based set of over 25 LLM rules, skills, and references for HTML and Facebook AI code authoring, improving AI code generation for Facebook web applications.

Code Migrations

Spearheaded a large-scale Flow/JavaScript modernization at Meta using AI-automated migrations for Meta's public-facing web applications, optimizing the codebase for AI efficiency and reducing token usage by up to 7% of the treated code.

Design Sytems experience

I have great expertice building web design system. I contributed to the created of Facebook design system. I also worked on creating the Meta's Accounts Center design system where I gain a great experience buildign multi brand design systems

Base Components

Architected over 20 design system components using React for Meta's design systems, enabling the creation of new experiences with 100% design accuracy for Facebook and Account Center web applications. Implemented multiple UI base components for composing design system libraries with shared logic and functionality, allowing the creation of 4 design systems from a single source of truth.

Cross-Platform

Migrated web design system components to cross-platform versions using React Native, enabling the development of Facebook and Account Center with 100% parity across 3 platforms (web, mobile, and VR) from a single source code.

Iconography

Directed an iconography migration project of over 24K icons from PNG to SVG for Facebook and Accounts Center web applications, optimizing performance with a projected 80% saving in network data transfer for image assets.

Design Tokens

Migrated Facebook's web design system from legacy design token infrastructure to a shared infrastructure, enabling parity in design tokens between mobile and web implementations while maintaining independence.

Accessibility

Specializing in digital accessibility at a global scale, building WCAG-compliant, accessible-by-design enterprise applications across Meta's web design systems.

Compliance

Led the Design System's accessibility compliance project for Facebook and Accounts Center web components, enabling Facebook's and Accounts Center's web applications to be 100% compliant with government regulations.

AI-Powered Authoring

Powered accessible code generation using a routing-based set of over 25 LLM rules, skills, and references for HTML and Facebook AI code authoring, improving AI code generation for Facebook web applications.

Backend Experience

Architected and engineered backend services and microservices for fintech and full-stack clients, spanning Node.js, TypeScript, PHP, SQL Server, PostgreSQL, MongoDB, and Kafka.

Architecture & Microservices

Architected backend services using Node.js, TypeScript, SQL Server, and MongoDB for Laffy's clients and admin applications, resulting in microservices supporting 4 distinct applications. Architected 2 microservice systems using Node.js and Kafka to decouple the notification systems (email and push), leading to a net 0% waiting time for notification generation.

APIs & Data

Engineered backend API services using PHP and SQL Server for Kobra's mobile application, resulting in the successful implementation of 15 new features. Enhanced Kobra's APIs' security by migrating more than 100 data queries from raw SQL to stored procedures, reducing the SQL injection risk for 50+ APIs.

Mentorship & Leadership

Mentored 20+ engineers on Node.js, TypeScript, and Domain-Driven Design through the Wizeline Academy, improving proficiency in code maintainability and type safety for enterprise backends. Led a team of 4 engineers at RedRabbit to deliver a record management system on a condensed timeline by standardizing application architecture and development workflows.

Education

Computer Science, Bachelor — University Autonomous of Sinaloa, Culiacán, Mexico (Aug 2006 – Jul 2011).

Néstor Vanz

Software Engineer