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Level
Middle
Experience
7 years
Location
Venezuela
English
C1
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Juan

Full Stack Developer

Juan is a Full Stack Developer with over 7 years of experience delivering robust, scalable applications across industries including healthcare, fintech, biotech, and e-commerce. He is skilled in both frontend and backend development using React, NestJS, Node.js, and GraphQL. Juan has led development on enterprise platforms, integrated cloud-native services, mentored teams, and maintained clean architecture across distributed systems. His proactive and adaptable nature helps translate business needs into effective and elegant software solutions.

Main expertise

React, React Native
Next.js
Nest.js
Auth0
Jenkins
OpenAI

Other skills

Selenium Python Grafana C#

Employment

  1. Full Stack Developer
    2021-06 – 2019-11

    Juan is contributing to the main Sephora website, implementing key modules including user authentication, profiles, product catalog, checkout, and payment workflows. He’s working across React and NestJS ecosystems, with tools like Auth0, Jenkins, and GitHub for CI/CD.
    React, Redux, React Native, NestJS, Auth0, Jenkins, GitHub, JavaScript

  2. Full Stack Developer
    2023-10 – 2021-06

    Project: Gobio – Geneva Integrations (2022-09 – 2023-10)
    Juan led integration between Geneva and Redox/FHIR APIs in a healthcare setting. He managed a team of 5 developers and authored system design documents, ensuring smooth front- and backend interoperability.
    React, GraphQL, Redux, NestJS, Spring Boot, AWS, PostgreSQL, OpenAI, SQS/SNS

    Project: Gobio – Geneva Core (2021-06 – 2022-09)
    As part of the original Geneva team, Juan worked on replacing legacy code with clean architecture, developing features and tests for both backend APIs and frontend components.
    React, Typescript, NestJS, Selenium, PostgreSQL, Python, Grafana, Datadog

  3. Full Stack Developer
    2021-06 – 2019-11

    Project: Kinesis
    Juan developed core features for a crypto-exchange integrating physical gold and silver. He built key modules like Mint, Wallet, and Explorer.
    🛠️ NextJS, Node.js, NestJS, C#, MongoDB, React Native, Jest, Enzyme

    Project: Rivals
    Developed gamified features like CMS-driven games, automated emails, ads, and leaderboards.
    ExpressJS, React, SWR, GraphQL, Bootstrap, Jest

    Project: Revance
    Built educational tools for plastic surgery students with drag-and-drop features and animations.
    React, Gatsby, RTK Query, Framer Motion, Styled Components, Redux

    Project: EPX Worldwide (2021-02 – 2021-06)
    Migrated entire system from WordPress to Next.js, and backend to NestJS with modular components.
    NextJS, NestJS, TypeScript, React Query, Laravel, Storybook

  4. Frontend Developer
    2019-11 – 2017-01
    Juan helped grow this rewards platform for brand ambassadors by adding and maintaining core features including analytics, dashboards, and user messaging. His work significantly improved client engagement.
    React, TailwindCSS, Styled Components, ExpressJS, React Router, Charts, Jest

Education

  • System Engineering
    Universidad Metropolitana (Unimet)