Simera Professional Key (SPK)

Demostenes G

Panama

Software Engineering Consultant

$ 6,700/month

10+ yrs exp

Hi, I’m Demostenes García. I’m a senior software engineering consultant based in Panama, with more than 15 years of experience building and improving web and mobile applications. My main area of expertise is frontend engineering, particularly with React, React Native, JavaScript, and TypeScript. I also have experience working with backend technologies such as Ruby on Rails and Laravel. Throughout my career, I’ve worked with companies in healthcare, banking, fintech, and B2B SaaS. I’ve cont…

Skills

  • Amazon S3
  • AWS
  • Azure
  • CSS
  • CSS3
  • Elasticsearch
  • JavaScript
  • Jenkins
  • Kanban
  • MongoDB
  • MySQL
  • Node.js
  • PostgreSQL
  • React
  • Redux
  • Ruby On Rails
  • SAS
  • SASS/SCSS
  • Scrum
  • Typescript
  • Vue.js
  • Webpack
  • JavaScript ES6
  • Angular
  • Babel
  • Cucumber
  • Cypress
  • Gatsby
  • GraphQL
  • Heroku
  • Jest
  • Laravel
  • PHPUnit
  • React Native
  • ReactJS
  • SASS
  • Software Engineer
  • StoryBook
  • Tailwind
  • Vite
  • Vuex
  • RESTful APIs
  • Performance Optimization
  • Web Performance Optimization
  • Nuxt.js
  • TailwindCss
  • Nest.js
  • Next.js
  • user-centered design
  • Next js
  • Localization
  • Accessibility
  • GitHub Actions
  • Tanstack Query
  • Playwright
  • Expo
  • press
  • Accesibility
  • CI/CD Pipelines
  • REST APIs
  • MSQL
  • Design Systems
  • Software Engineering
  • Tailwind CSS
  • RSpec
  • Design System
  • Agile/Scrum, Solid Principles, Object Oriented Programming, Reactive Programming

Demostenes G

Panama

Software Engineering Consultant

$ 6,700 /month

Part Time: $ 4,450/month

10+ yrs exp

Intro Video

Hi, I’m Demostenes García. I’m a senior software engineering consultant based in Panama, with more than 15 years of experience building and improving web and mobile applications. My main area of expertise is frontend engineering, particularly with React, React Native, JavaScript, and TypeScript. I also have experience working with backend technologies such as Ruby on Rails and Laravel. Throughout my career, I’ve worked with companies in healthcare, banking, fintech, and B2B SaaS. I’ve cont…

Skills

  • Amazon S3
  • AWS
  • Azure
  • CSS
  • CSS3
  • Elasticsearch
  • JavaScript
  • Jenkins
  • Kanban
  • MongoDB
  • MySQL
  • Node.js
  • PostgreSQL
  • React
  • Redux
  • Ruby On Rails
  • SAS
  • SASS/SCSS
  • Scrum
  • Typescript
  • Vue.js
  • Webpack
  • JavaScript ES6
  • Angular
  • Babel
  • Cucumber
  • Cypress
  • Gatsby
  • GraphQL
  • Heroku
  • Jest
  • Laravel
  • PHPUnit
  • React Native
  • ReactJS
  • SASS
  • Software Engineer
  • StoryBook
  • Tailwind
  • Vite
  • Vuex
  • RESTful APIs
  • Performance Optimization
  • Web Performance Optimization
  • Nuxt.js
  • TailwindCss
  • Nest.js
  • Next.js
  • user-centered design
  • Next js
  • Localization
  • Accessibility
  • GitHub Actions
  • Tanstack Query
  • Playwright
  • Expo
  • press
  • Accesibility
  • CI/CD Pipelines
  • REST APIs
  • MSQL
  • Design Systems
  • Software Engineering
  • Tailwind CSS
  • RSpec
  • Design System
  • Agile/Scrum, Solid Principles, Object Oriented Programming, Reactive Programming

Software Engineering Consultant

Self-employed
July 2010 - June 2026

Fullstack Engineer (ProductPlan) - Building backend and frontend solutions with Ruby, Ruby on Rails, React, Hotwired, Elasticsearch, Redis, PostgreSQL - Build pixel-perfect, responsive React/TypeScript UIs from Figma designs for strategic product modules — including Strategic Portfolio and Objectives & Opportunities — used by 3,000+ companies, including Fortune 500 clients. - Craft reusable, accessible components and design-system UI (Storybook, design tokens) that keep the product visually consistent across teams. - Partner directly with product designers, doing design QA to match implementations to mocks down to spacing, typography, and color. - Tune both perceived and actual performance — Core Web Vitals (LCP, CLS) for how the app feels, plus profiling, logging, and performance markers to fix how it behaves under load. - Implement complex interactive experiences with state machines (XState), Lottie, and accessibility-aware CSS animations and micro-interactions. - Introduced AI-assisted engineering workflows (Claude Code, OpenAI Codex) for refactoring and test generation — with strict human review standards. - Mentor junior and mid-level engineers in frontend craft, testing discipline, and component design. Senior Frontend Engineer (CollectiveHealth) - Rebuilt legacy AngularJS member experiences — the MyCollective member portal and Enrollment Portal — as responsive, accessible React/Next.js UIs for a healthcare platform serving 600,000+ users across the U.S. - Delivered WCAG accessibility and Spanish localization across critical healthcare workflows. - Built and maintained a shared component library and design tokens adopted across product teams, reducing UI duplication and inconsistency. Frontend Engineer (American Express, Bank of America, Yodlee) - Built pixel-perfect, ADA-compliant UI components for eBanking solutions (Bank of America / Yodlee) serving 50M+ users. - Delivered accessible, cross-browser, responsive frontend solutions for enterprise financial clients on distributed teams. - Migrated legacy JSP experiences to a modern static frontend stack (American Express).

Smart Scores

Communication
90
Role Fit
100
Adaptability
80
Problem-solving
90

Smart Skills

beta