James Koshigoe

James Koshigoe

San Francisco, CA, United States
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James Koshigoe

James Koshigoe

San Francisco, CA, United States
Member since February 27, 2014
James is an entrepreneur, programmer, and software engineer focused on web development. He has extensive experience in startups and small business environments where full-stack skills, creative thinking, and high attention to detail are key and fast turnaround is paramount.
James is now available for hire
  • JavaScript, 12 years
  • CSS, 12 years
  • Node.js, 4 years
  • Ruby, 4 years
  • Ruby on Rails (RoR), 4 years
  • React.js, 3 years
  • TypeScript, 2 years
  • Python, 2 years
San Francisco, CA, United States
Preferred Environment
IntelliJ, Vim, Git, Mac, Linux
The most amazing...
...system I've ever built is an enterprise permission system providing security to every instance of data while maintaining scalability.
  • Web Applications Consultant and Contractor
    2014 - PRESENT
    • Architected and led development in a team to build a Spotify-like application for a Series-A funded startup using Node.js, Electron/Chromium, and React.js.
    • Built a bidirectional shipping integration API with Ruby on Rails for a very large affiliate network corporation.
    • Managed an outsourced, overseas engineering team using Agile practices.
    • Built a large front-end for a tax compliance platform with AngularJS and Bootstrap.
    • Consulted for an early-stage startup and worked in a team to develop a single-page application using React.js, Flux, SASS, and ES6.
    Technologies: JavaScript (ES5, ES6, ES7), TypeScript, React.js, Node.js, Ruby on Rails
  • Senior Software Engineer
    2013 - 2014
    • Automated and optimized as much of IMM's manual processes as possible so IMM's talent could focus on what they do best.
    • Provided technology and architectural experience to build core infrastructures upon which other developers relied.
    • Built high-traffic websites for IMM's digital marketing campaigns for well-known brands such as TracFone, Chili's, On The Border, DirectBuy, and more.
    Technologies: PHP, Zend Framework 2, PHPUnit, JavaScript, Node.js, Ext.js, MySQL, Git, SVN
  • Lead Developer
    InvitedHome (formerly Vacation Rental Partner)
    2011 - 2013
    • Paved a path and began moving the entire codebase from CakePHP to Ruby on Rails. Re-architected it and kept business needs moving forward.
    • Integral in building the back-end and parts of the front-end for a new guest-facing site, enabling VRP to pivot its business model.
    • Built custom feeds using REST, JSON, and XML to list VRP’s properties on HomeAway, FlipKey, and SkipJump through their proprietary APIs.
    • Built accounting tools to automate manual tasks that previously cost the CEO numerous hours every month.
    Technologies: Ruby on Rails, PHP, CakePHP, PostgreSQL, RSpec, jQuery, Git
  • Website Developer, Consultant
    Denver Homes Online
    2010 - 2011
    • Worked with the client from the ground up to craft several web designs and implement them in a foundation the client could maintain.
    • Trained the client in digital marketing fundamentals, including key concepts of SEO and proper usage of analytics to track the performance of campaigns.
    Technologies: PHP, Concrete5 CMS, SEO, Photoshop
  • Founder
    2009 - 2009
    • Developed from scratch an MVC framework in PHP, complete with a custom ORM.
    • Built a social network foundation with user profiles. Implemented commenting and friending features.
    Technologies: PHP, MySQL, jQuery UI, SVN
  • Website Developer
    Sito Marketing/American Vending Systems
    2008 - 2008
    • Created and concurrently managed all the technical needs of ten websites.
    • Built a specialized CMS in PHP that allowed for fast generation of hundreds of landing pages.
    • Integrated leads coming from various sources into a Customer Relationship Management (CRM) system using PHP and a REST API.
    Technologies: PHP, MySQL, jQuery, Python, SVN, SugarCRM, WordPress
  • Website Developer
    Colorado Home Helper
    2007 - 2008
    • Developed a system for real estate agents to email clients custom home search reports using an AJAX-based interface and PHP/MySQL back-end.
    • Developed and further customized an existing PHP-based MLS to allow visitors to register and save searches. Integrated featured listings and improved overall functionality and usability.
    Technologies: PHP, MySQL, jQuery, SVN
  • RelatedJS (Development)

    A set of data structures used to manage complex relationships in JavaScript.

  • Portfolio and Code Samples (Development)

    A variety of previous projects and code samples to view.

  • Praisee (Development)

    Praisee is a community dedicated to giving consumers a voice to share their reviews, ask questions, and find answers to all products

    I co-founded Praisee and wrote the service from scratch on top of React.js, GraphQL/Relay, Node.js, TypeScript, PostgreSQL, Redis, and Google Cloud Platform. The front-end is isomorphic and the back-end is a custom scalable architecture designed for the unique batch data loading and authorization needs of GraphQL.

  • Fantasy Empire (Development)

    I helped build Fantasy Empire's MVP, which is a fantasy sports platform. I worked on the front-end building a React.js + Mobx architecture that spoke to a Rails-like back-end via RESTful APIs.

  • Cradient (Development)

    Cradient automates advertising on Facebook by continuously sampling audiences and adjusting spend across hundreds of multivariate ad sets. We've been able to increase conversions for clients anywhere from 1.5x to 2x. I co-founded this startup and built most of the back-end with Python/Django which talks to various APIs such as Facebook's Marketing API and HubSpot's APIs.

  • Languages
    CSS, ES6, JavaScript, Ruby, TypeScript, SQL, LESS, ES7, Sass, PHP, GraphQL, Python, C++, C
  • Frameworks
    Ruby on Rails (RoR), Express.js, Flux, Relay, Django, Electron.js, Redux, Laravel, PHPUnit, AngularJS, Bootstrap
  • Libraries/APIs
    React.js, Node.js, jQuery, MobX, Authorize.Net, Facebook Marketing API, Devise, Socket.IO
  • Tools
    Adobe Photoshop, Git, RSpec, JIRA, Balsamiq, Moqups, Babel, Browserify, Chrome Developer Tools, Vim Text Editor, Mocha, InVision, Sketch, Nginx, Trello, Grunt, Apache, Gulp.js
  • Paradigms
    Responsive Web Design (RWD), Agile Software Development, Object-oriented Programming (OOP), SOLID Principles, Functional Programming, Kanban, Model View Controller (MVC), REST, Search Engine Optimization (SEO), Scrum
  • Misc
    Front-end, Digital Marketing, User Experience (UX), Social Media, Facebook Ads, SEM, Customer Acquisition
  • Platforms
    Mac OS, Windows, Heroku, Linux, Docker, Google Cloud Platform
  • Storage
    MySQL, MongoDB, SQLite, PostgreSQL, Redis
  • B.S. (incomplete) degree in Computer Science
    University of Colorado Boulder - Boulder
    2010 - 2012
  • B.S. (incomplete) degree in Computer Science
    University of Colorado Denver - Denver
    2006 - 2008
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