Caleb Rosario Email & Phone Number

Venice, Ca, Us

Create & testing Solidity contractsNFT gating implementation Web3 wallet management BSV integrationPolygon UD integration Add supporting features to frontend React & typescript using hooksCI/CD AWS & GitHub management & updatesAWS Lambda internal tooling APIBSV Kensei used for analytics data GraphQL queries for account session management Aquired by Row8

Venice, Ca, Us

Implement features and bug fixes on our Web3 Streaming platform using Javascript libraries such as React, React Hooks and Next.jsIntegrating Ethereum blockchain using Truffle, Waffle, Ganache and SolidityDeploying smart contracts for NFTs on local testnet as well as Rinkeby using Remix IDEMake opensource contributions to deps: Web3.js, Wyvern-jsWorking with Metamask and Opensea-js integration for the marketplaceIntegrating new Graphql queries/mutations for managing users & permissions

New York City, Ny, Us

Building data visualizations using D3.js in legacy Backbone/.NET application to reduce research timeMigrate & maintaining Ravel's Ember.js application, build jobs & deployment pipeline.Collaborating with multiple teams across different timezones & countries on microservice architecture designs and Angular.IO & Typescript SPA, as well as the build jobs and pipeline.Design JS based Integration testing set using Selenium WebDriver to test against multiple browsersMigrating away from serverside state management & routing to clientsideDeveloping docs & talks to help train teammates.

San Francisco, California, Us

Building analytics tools for the legal communityBuilding features in Ember app & building for reuse.Acquired by LexisNexis

San Mateo, California, Us

Working with Product Owner, PdM, Design, UX, QA and Server side Engineering to develop applications for the PS4 console. Applied SAFe(Enterprise Agile) methodologies including cross train collaboration and dependency management, 2 week sprint cycles using tools which include Rally, Jira, Confluence and GHE(Github Enterprise) to manage architecture designs, documentation, Sprint objectives, requirements, defect and story management.Application development in a proprietary WebGL based Javascript framework using the Flux pattern, as well as new applications in Ember.js, SCSS and HTML Bars. Build tools included Broccoli for project builds and packaging, and Grunt for localization integration, environment based builds, uglification, concatenation, unit and integration testing as well as transpilation of ES6 modules for ES5 only consumption.CI/CD GHE with Drone and Docker for builds and testing per commit, along with Jenkins for deployments and custom build management.QUnit, Mocha and Chai for unit testing and Blanket for code coverage. Selenium and Python for automated testing on console.Working along side Senior, Staff and Principal Engineers in collaborative efforts to increase Engineering efficiency, along with decreasing time from concept to prototype. Active member of the UCA (Unified Client Architecture) Committee with the goal of streamlining Client Engineering and QA.Member of the Winning Team for the SNEI Summer Hackathon 2015.On boarding new Engineers, as well as ramping up Interns on existing and upcoming projects.R&D user testing for Sony Future Labs on prototype wearables

Jacksonville, Fl, Us

Worked in a collaborative environment to develop highly scalable Node.js back-ends.Developed and supported a RESTful API to support our application with over 1200 endpoints, hundred resources, documented with interactive UI for testing using technologies such as Express.js, Loopback.js, Passport.js.Secured resources using using token-based authentication. Developed and supported a mobile-first web app using the latest JS MVC framework and tools(Ember, Handlebars, LESS, Bootstrap, HTML5).Created tools to automate the scaling of certain components of our infrastructure using Yargs.js and Async.js and Streams.Provided guidance and work leadership to less-experienced systems engineers.Maintains current knowledge of relevant technology as assigned.Participates in special projects as assigned.

Denver, Co, Us

Performs complex systems development and design work that may include logic design, I/O design, model formulation, development cost projections, computer architecture analysis and design.Salesforce integration and database syncing using Node.js streams, MariaDb and TokuDB.Created internal application RESTful APIs for consumption using technologies such as Node.js, Express.js, token-based authenticationWriting and assisting with the design of new core features for both existing and new products using Ember.js, Handelbars and Ember-Data using the ES6 Harmony standard.Optimizing application and system components for performance and reliability with workflow tools such as Yeoman, NPM, and Bower.Created tools to automate the scaling of certain components of our infrastructure using Optimist.js and Async.jsInstrumentation of our application and systems to capture performance and business metricsPerformed systems modeling, simulation, and analysis.Participated in the upgrading of operating systems and design of systems enhancements.Provided input for documentation on new or existing systems using JSDoc.Developed and conducted tests to ensure systems meet documented user requirements using Grunt and QUnit.Identifies, analyzes, and resolves system problems.Provides system/equipment/specialized training and technical guidance.Determines system specifications, input/output processes, and working parameters for hardware/software compatibility.Provided guidance and work leadership to less-experienced systems engineers.Maintains current knowledge of relevant technology as assigned.Participates in special projects as assigned.

Leveraging a solid knowledge of JavaScript and popular Node.js frameworks.Worked in a collaborative environment to develop highly scalable Node.js back-ends.Have experience working in structured environments following defined development methodologies, including multi-channel and multi-tiered design and development.Building RESTful services for clientside consumptionConfiguring web and application serversDeveloping applications using front-end systems with Javascript , Angular.JS , Node.js , Backbone , Bootstrap, HTML5, CSS, D3, and Crossfilter.Having understanding of JavaScript, HTTP and TCP

Orlando, Fl, Us

Build and drive the center of excellence for PhoneGap hybrid mobility platformCreating native, web and hybrid enterprise mobile applications for various mobile platforms (Windows8, iOS/Android/Blackberry and MEAP)Analysis of business requirements and completing design and development in accordance with customer business requirementsUnderstanding new mobile technology and industry trends that allow innovate and propose new ideas for mobile native appsDeveloping prototypes quickly, writing client-side code for mobile apps, and defining sound mobile architecture. An understanding of and practical experience with Mobile Web.Worked with the front end developers to build the interface with focus on usability featuresCommunicate to a wide variety of audiences, both business and technicalAbility to work independently with minimal direction