Jose Quintero

Software Engineer

Guatemala
jose.juan.qm@gmail.com
quintero.gt /josejuanqm /josejuanqm

Education

Universidad Francisco Marroquin — CS

Jan 2016 - Oct 2020

Experience

  • Getaround @ Turing — Software Engineer

    Aug 2022 - Mar 2024
    Swift
    Objective-C
    GraphQL
    Architecture
    • Responsible for iteratively developing within the existing mobile apps behind feature flags, in parallel with the platform’s current
    • search-to-checkout experience
    • Performed advanced mobile app design, development, and maintenance duties for iOS devices
    • Assured usability and dependability of produced apps.
    • Built and worked on unit and integration testing methodologies.
    • Collaborated with the design team to develop and implement new features for the apps.
    • Boosted performance, troubleshot bugs, and solved application bottlenecks.
    • Worked on application changes by planning, creating, and implementing them.

  • Hugo — Head of iOS

    Jul 2021 - Jul 2022
    Swift
    Objective-C
    GraphQL
    Architecture
    • Successfully delivered high-quality iOS applications on time and within budget, enhancing Hugo's product portfolio.
    • Led the iOS development team, ensuring timely and budget-compliant delivery of high-quality applications.
    • Designed and implemented scalable and high-performance application architecture.
    • Coordinated with UX/UI designers, product managers, and backend developers to create cohesive and user-friendly products.
    • Mentored junior developers, providing guidance to enhance their skills and career growth.

  • PayPal — Senior Software Engineer

    Sept 2020 - Jul 2021
    Swift
    Objective-C
    GraphQL
    Architecture
    • Developed features and resolved issues within the PayPal application.
    • Integrated new signature features with PDF rendering capabilities.
    • Utilized GraphQL and REST/RESTful APIs for data management.
    • Performed iOS development using Swift and Objective-C.
    • Contributed to web feature development with React and HTML/CSS.

  • StarWars @ Disney — Senior iOS Developer

    Aug 2019 - Nov 2020
    Swift
    Objective-C
    GraphQL
    • Implemented new QR scanning and augmented reality features.
    • Developed an iOS platform for the StarWars fan app.
    • Performed iOS development using Swift and Objective-C.
    • Added several features to the platform.
    • Used RESTful APIs + GraphQL.

  • Accointing — Full Stack Developer

    Feb 2020 - Jul 2020
    Swift
    React Native
    Node
    Android - Java
    Nest.js
    GraphQL
    UI/UX
    • Improved user retention and overall UI/UX design of the website and app.
    • Worked on Accounting, a website enabling users to track, manage, and report all their crypto platforms in one place.
    • Handled tasks ranging from front-end landing page development to managing app notifications.
    • Collaborated with a team of 15 developers.
    • Developed mobile applications using React, React Native, and Node.js.
    • Used HTML/CSS for front-end development.
    • Implemented features and functionality using JavaScript and React.
    • Employed GraphQL for efficient data queries.

  • Climate @ Mango Chango — Full Stack Developer

    Sept 2019 - Feb 2020
    Swift
    JavaScript
    CSS
    Node
    React
    GraphQL
    Architecture
    • Improved overall performance of the app and implemented a more robust back-end.
    • Worked on Climate, a digital farming software platform analyzing farm data through the Climate FieldView app.
    • Supported the app with dedicated customer support, data-driven recommendations, and cutting-edge science.
    • Developed the back-end system to implement GraphQL into the existing website.
    • Applied technologies ranging from React and Node.js to iOS development.
    • Introduced better practices into the codebase to improve efficiency and maintainability.

  • Fox Sports App @ Fox Networks — Mobile Developer

    Oct 2017 - Sept 2019
    Swift
    Objective-C
    PHP
    Android - Java
    Photoshop / Illustrator
    QA
    UI/UX
    • Increased user retention on some important screens and sections.
    • Reduced the number of bugs and issues post-publication.
    • Improved the app's stability and reduced the number of crashes.
    • Worked as an iOS Developer for the Fox Sports App streaming service.
    • Designed new interactions, motion design, and user interfaces for the Fox Sports App LATAM.
    • Deployed app designs using Adobe Photoshop and Adobe Illustrator.
    • Implemented automation in the testing of the Fox App streaming service (foxplay.com).
    • Performed a complete rework of the video player within the app.
    • Conducted iOS development using iOS-Swift, Selenium, and Sketch.

  • Bi en Linea @ Milk and Cookies — Mobile Developer

    Sept 2018 - Mar 2019
    Swift
    Objective-C
    PHP
    Android - Java
    UI/UX
    • Improved user retention and transfer amount.
    • Provided users the possibility to access their statements and records without the need of going to a branch, helping the bank attract more customers.
    • Built Bi en Linea, a banking app featuring easy-to-use account management and history tracking.

  • Visa VPT @ Milk and Cookies — Mobile Developer

    Aug 2017 - May 2018
    Swift
    Objective-C
    PHP
    Android - Java
    UI/UX
    • Greatly improved the number of users and user retention from V2.0 to V3.0.
    • Developed a P2P, P2B transfer app for Visa in Guatemala, enabling users to quickly transfer money or pay without the need for a wallet.
    • Ensured quality and performance of the application to specifications.

  • Coca Cola @ Milk and Cookies — Mobile Developer

    Jan 2017 - Aug 2017
    Swift
    Objective-C
    PHP
    Android - Java
    UI/UX
    • Built a back-office app for Coca-Cola in Guatemala featuring a rewards program for store owners.
    • Improved the time and accuracy of reviews and rewards.
    • Developed an app to be deployed on iOS and Android devices.
    • Helped with website integration using PHP + HTML/CSS.

  • Hugo @ Milk and Cookies — Mobile Developer

    Jun 2016 - Dec 2016
    Swift
    Objective-C
    PHP
    Android - Java
    UI/UX
    • Developed Hugo, a product to help people with HIV in Guatemala track their meds, alimentation habits, and mood.
    • Performed mobile app development using iOS - Swift, Sketch, and Objective-C.
    • Implemented and deployed an app for iOS and Android devices.
    • Helped with website integration using PHP + HTML/CSS.

  • Verto @ Milk and Cookies — Mobile Developer

    Jan 2016 - Jul 2016
    Swift
    Objective-C
    UI/UX
    • Built a non-profit organization application to help people in need in Guatemala.
    • Performed mobile app development using iOS - Swift and Objective-C.
    • Designed and implemented application updates.

  • Dominos Pizza @ Milk and Cookies — Mobile Developer

    May 2015 - Mar 2019
    Swift
    Objective-C
    UI/UX
    REST/RESTful APIs
    • Improved user conversion with app-exclusive offers, increasing the number of orders.
    • Built an ordering and delivery tracking app for Domino's Pizza in Guatemala.
    • Implemented features such as order tracking.
    • Helped create and optimize app features.
    • Applied iOS - Swift and Objective-C to mobile app development.