Mary I Sheahen, Software Developer in Narragansett, RI, United States
Mary I Sheahen

Software Developer in Narragansett, RI, United States

Member since February 5, 2019
Mary is an experienced web developer with a passion for user experience and 9+ years of industry expertise. With a master's degree in computer science and extensive experience freelancing for front end projects, she is well-positioned to tackle any project.
Mary is now available for hire




Narragansett, RI, United States



Preferred Environment

CSS, HTML, JavaScript, React

The most amazing...

...aspect of UX is creating applications that are not only beautiful but work for your target user.


  • UX Development Lead

    2018 - PRESENT
    SLCKET, Inc
    • Implemented architecture for a hybrid mobile app by creating SQLite database handlers, controller, and views.
    • Created Android and iOS custom functions to access phone-specific controls such as camera access, speech recognition, and gallery photo pickers.
    • Contributed to and helped maintain PHP API endpoints, ensuring tight security and fast performance.
    • Created pixel perfect implementations of custom designs provided by the design team, ensuring responsiveness overall device sizes.
    • Created a lightweight custom javascript framework to handle data passing from native mobile features to unified JavaScript UI.
    • Implemented CSS animations for over 4 games. Animation styles included a countdown ticker loading layer, moving backgrounds on the games, and success/failure animations on certain game actions.
    Technologies: Amazon Web Services (AWS), Java, Swift, HTML, JavaScript, MySQL, PHP, CSS3
  • UI Developer

    2019 - 2022
    Metriva Technologies
    • Created from scratch and successfully launched an Angular-based UI healthcare platform.
    • Integrated a third-party OAuth system for user session logins.
    • Planned and implemented re-useable components in the system with custom styling and functionality.
    Technologies: HTML, CSS, Sass, User Interface (UI), User Experience (UX), Angular, RxJS, Material Design, Theme Development, Pixel Perfect
  • Frontend Developer/iOS Developer

    2019 - 2020
    GSK (Freelance Contract)
    • Used React to build web portal for viewing, managing and submitting sensitive user data.
    • Implemented logic for authenticating users via Implicit Grant and then later through Authorization Code Grant types.
    • Used Google's Speech-to-text API and grpc streaming with iOS app to record voice recordings and convert to text transcript.
    Technologies: Auth0, Node.js, Google Cloud Platform (GCP), Swift, React
  • Front-end Engineer

    2019 - 2020
    Quartz Network (Freelance Contract)
    • Implemented React responsive web application for the social network of professionals including features like connections, messaging, and admin functions.
    • Constructed embedded posts for social media entries using complex regex logic, displaying HTML content based on user-input data.
    • Implemented rich text editor for user content using Draft.js.
    Technologies: Loopback, React
  • Front-end Engineer

    2019 - 2019
    JoyBird (via TopTal)
    • Polished complex React components and created CSS animations for an eCommerce site.
    • Implemented React components to display dynamic menu items.
    Technologies: Storyboarding, GraphQL, React
  • Front End Developer

    2019 - 2019 (via TopTal)
    • Implemented and collaborated on new designs for context menus and tooltip menus for canvas-based drawing tool.
    • Created new components in React that allowed for text manipulation.
    • Leveraged Fabric.js methods in order to update font styles and integrated into text changing components.
    Technologies: Fabric, JavaScript, HTML, CSS, Canvas, React
  • UX Developer

    2015 - 2018
    Fidelity Investments
    • Worked closely with a team of designers and developers to implement working prototypes for web-based financial applications.
    • Successfully delivered over 12 projects over the three year period.
    • Contributed and maintained custom Angular2 based UI framework used across multiple applications in the organization.
    Technologies: SQL, JavaScript, HTML, CSS, Ember.js, SCSS, Angular
  • Full Stack Developer

    2014 - 2015
    SLCKET, Inc
    • Implemented web and mobile applications for a mobile web-based social media application.
    Technologies: CSS, SCSS, JavaScript, HTML, MySQL, PHP


  • Data Visualization Project

    This project used Highcharts.js and d3.js to help visualize data that was being collected about nursing home residents and their health activity. I re-designed and developed a new web interface using responsive design techniques. The web interface was then used for viewing clinical data stored in a MYSQL database, involving writing complex queries and using PHP, CSS, HTML, JavaScript, and jQuery.


  • Languages

    HTML, JavaScript, CSS3, CSS, Swift, PHP, Java, SCSS, SQL, GraphQL, Sass
  • Frameworks

    Angular, Ember.js, React Native, Loopback
  • Libraries/APIs

    React, Highcharts, D3.js, Fabric, Node.js, RxJS
  • Storage

  • Other

    CSS3 Animation, Storyboarding, User Interface (UI), User Experience (UX), Material Design, Theme Development, Pixel Perfect
  • Platforms

    Android, iOS, Google Cloud Platform (GCP), Amazon Web Services (AWS)
  • Tools

    Canvas, Auth0


  • Master's Degree in Computer Science
    2011 - 2015
    University of Missouri - Columbia - Columbia, MO
  • Bachelor's Degree in Biological Engineering
    2007 - 2011
    University of Missouri - Columbia - Columbia, MO


  • Senior Web Developer Nanodegree

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