Simera Professional Key (SPK)

Alejandro U

Argentina

Frontend Software Engineer

$ 4,200/month

4 yrs exp

Senior Frontend Engineer with more than 4 years of experience building high-traffic web products with React and TypeScript. I worked on leading real estate portals in Latin America, with more than 10 million monthly visits, focusing on performance, Core Web Vitals and design systems at scale. I led a design system migration of almost 100 components, coordinating 5 teams and around 30 people over 11 months, delivered on time. I also work with SSR architectures on Node.js, technical SEO, and CI…

Skills

  • CSS
  • CSS3
  • Git
  • GitHub
  • HTML
  • HTML5
  • JavaScript
  • New Relic
  • Node.js
  • React
  • Redux
  • SQLite
  • TDD
  • Typescript
  • Webpack
  • JavaScript ES6
  • CM Modules
  • Jest
  • React Routes
  • ReactJS
  • SSH
  • StoryBook
  • Zustand
  • RESTful APIs
  • React Router
  • CSS 3
  • Backend Development (Node.js with TypeScript).
  • DNS
  • Next.js
  • GitHub Actions
  • REST APIs
  • Remix.js
  • Design Systems
  • Git Hub
  • Tailwind CSS
  • ESLint
  • AI Tools (ChatGPT, Claude, etc.)
  • MCP
  • VPS
  • Design System
  • SDD
  • SSR
  • Claude Code
  • Desarrollo Frontend
  • Type Script
  • Agile/Scrum, Solid Principles, Object Oriented Programming, Reactive Programming
  • SSRS
  • NewRelic
  • Zod
  • Typescrtipt
  • React • Next.js • TypeScript • JavaScript • HTML • CSS • Tailwind • Bootstrap

Alejandro U

Argentina

Frontend Software Engineer

$ 4,200 /month

4 yrs exp

Why Remote Work

Senior Frontend Engineer with more than 4 years of experience building high-traffic web products with React and TypeScript. I worked on leading real estate portals in Latin America, with more than 10 million monthly visits, focusing on performance, Core Web Vitals and design systems at scale. I led a design system migration of almost 100 components, coordinating 5 teams and around 30 people over 11 months, delivered on time. I also work with SSR architectures on Node.js, technical SEO, and CI…

Skills

  • CSS
  • CSS3
  • Git
  • GitHub
  • HTML
  • HTML5
  • JavaScript
  • New Relic
  • Node.js
  • React
  • Redux
  • SQLite
  • TDD
  • Typescript
  • Webpack
  • JavaScript ES6
  • CM Modules
  • Jest
  • React Routes
  • ReactJS
  • SSH
  • StoryBook
  • Zustand
  • RESTful APIs
  • React Router
  • CSS 3
  • Backend Development (Node.js with TypeScript).
  • DNS
  • Next.js
  • GitHub Actions
  • REST APIs
  • Remix.js
  • Design Systems
  • Git Hub
  • Tailwind CSS
  • ESLint
  • AI Tools (ChatGPT, Claude, etc.)
  • MCP
  • VPS
  • Design System
  • SDD
  • SSR
  • Claude Code
  • Desarrollo Frontend
  • Type Script
  • Agile/Scrum, Solid Principles, Object Oriented Programming, Reactive Programming
  • SSRS
  • NewRelic
  • Zod
  • Typescrtipt
  • React • Next.js • TypeScript • JavaScript • HTML • CSS • Tailwind • Bootstrap

Frontend Software Engineer

Grupo QuintoAndar
March 2022 - January 2026

Frontend Software Engineer at a regional proptech company that owns leading real estate portals in Argentina and Brazil, with more than 10 million monthly visits. Progressed from Semi Senior to Senior Engineer. Built and optimized high-traffic web interfaces with React and TypeScript on a custom SSR architecture over Node.js, improving perceived performance and rendering stability. Led the migration of a styles monorepo of almost 100 components from Styled Components to SCSS Modules over 11 months, delivered on time. Coordinated with 5 teams, around 30 people, across 4 products, improving maintainability, scalability and consistency. Configured Webpack and optimized the SSR styles pipeline to solve CSS duplication and enable a progressive migration with lower technical risk. Worked on a microfrontend architecture with 4 independently deployed applications integrated under the same domain through a proxy that routed by URL, all consuming the shared components monorepo. Optimized Core Web Vitals to meet Google thresholds (LCP <= 2.5s, INP <= 200ms) and reduced CLS to almost zero, sustaining those metrics in production through JavaScript reduction, lazy loading, code splitting, image optimization, preload and prefetch. Implemented structured data (Schema.org / JSON-LD) for rich results and Open Graph metadata for social sharing, working alongside the core SEO team. Created 6-7 GitHub Actions workflows for linting, bundle size validation and duplicate dependency detection. Strengthened delivery quality with automated testing, code review standards, ESLint modernization and CI/CD pipelines. Implemented frontend observability with New Relic for production monitoring and early incident detection. Delivered a cross-country initiative with teams in Brazil, handling requirements gathering, stakeholder coordination and end-to-end delivery. Led the adoption of AI tools within the team to improve productivity and quality.

Frontend Developer

Accenture Argentina
November 2021 - March 2022

Frontend Developer at a global technology consulting company, working on a design system for a banking client. Developed reusable components with React and Styled Components for the design system, applied across multiple product teams. Documented components in Storybook, making them easier to use, maintain and adopt across teams. Supported migration processes to the design system, ensuring visual consistency, reusability and alignment with UI standards.

Smart Scores

Communication
75
Role Fit
100
Adaptability
85
Problem-solving
85

Smart Skills

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