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Phil Greenberg, JavaScript Developer in San Jose, CA, United States
Phil Greenberg

JavaScript Developer in San Jose, CA, United States

Member since March 29, 2017
Phil is an experienced software architect and lead engineer with a combination of real-world experience from Fortune 500 companies to infant-stage startups. In addition, he was mentored first-hand in software architecture and development by one of the co-inventors of UNIX.
Phil is now available for hire



  • JavaScript, 6 years
  • Node.js, 6 years
  • REST API Architecture, 6 years
  • SOA Architecture, 5 years
  • PostgreSQL, 5 years
  • Product Management, 4 years
  • Software Consulting, 3 years
  • React Native, 2 years
San Jose, CA, United States



Preferred Environment

OS X, Git, WebStorm

The most amazing...

...project I've worked on was a multi-format, AI-enabled communication platform that syncs all forms of digital communication into a single app on any device.


  • Senior Software Engineer

    2017 - PRESENT
    Keyo AI (via Toptal)
    • Conducted technical investigation into current system and documented technical strategy for re-build.
    • Designed the system architecture for a cross-platform mobile and web application targeted at apartment hunters.
    Technologies: Architecture, React Native, Node.js, PostgreSQL
  • Technical Consultant

    2017 - 2017
    APT Systems Inc (via Toptal)
    • Created technical requirements document for a novel cross platform, stock-charting mobile app.
    • Interviewed developers of existing system for architectural and integration requirements.
    Technologies: Consulting, Architecture, Node.js, React Native
  • Product Manager

    2017 - 2017
    • Worked as the lead architect for a payment processing on-boarding system.
    • Estimated and oversaw development of onshore and offshore resources.
    Technologies: Node.js, MongoDB, Amazon Web Services (AWS), React
  • Mobile Architect

    2017 - 2017
    Field Clock
    • Developed a React Native Android app that helps farmers automate their production.
    • Designed the React Native app to be a dual app and specifically made it so that it can be turned into an iOS app with minimal effort.
    • Enabled the mobile app to be able to connect to Bluetooth printers in order to print QR code badges which can be scanned in-app to clock workers in-and-out, track tickets, and create quality notes.
    • Designed the entire mobile application to be able to function offline for long periods of time and sync data back once in cell reception.
    Technologies: React Native
  • Platform Architect | Lead Engineer

    2013 - 2016
    • Was involved intimately in all aspects of company growth from unvalued to a $50 million pre-money valuation and from 6 to 35+ employees.
    • Worked as the chief architect and lead back-end engineer of a petabyte-scale platform with enterprise-level feature complexity.
    • Led the technology definition and process development for the entire 15-person product team.
    • Estimated, planned, and tracked development efforts across four distinct stacks to assist product owner in budget and resource planning.
    • Managed a team of six individuals across a 10-hour time zone difference.
    • Invented four revolutionary patents in adaptive, scalable architecture and digital communication.
    Technologies: Node.js, PostgreSQL, Elasticsearch, Nginx, RabbitMQ, Redis, Cassandra
  • Design Engineer

    2011 - 2013
    • Created and supported many design automation scripts used to generate complex circuits used in Intel® Xeon® processors.
    • Led and trained more than ten engineers across multiple sites and time zones in cutting-edge automation technology.
    • Was designated as a member of the company-wide “circle of excellence” for design automation—worked closely with a small team to reduce design effort of critical blocks by 90% while simultaneously decreasing power consumption.
    Technologies: Perl, Tcl, Scripting, Automation


  • Entefy (Development)

    Entefy is an AI-enabled, multi-format, multi-channel communication platform which integrates with all major forms of digital communication and seamlessly syncs them across all your digital devices.

    Entefy is designed platform-first with the entire server and infrastructure stack custom designed for performance and scalability for millions of users.


  • Languages

    Stored Procedure, JavaScript, SQL, ECMAScript (ES6), Perl, Tcl
  • Frameworks

    React Native, Express.js
  • Libraries/APIs

    Socket.IO, REST APIs, Node.js
  • Tools

    WebStorm, Microsoft Office, Microsoft PowerPoint, Atom, Microsoft Excel, Nginx, RabbitMQ
  • Paradigms

    Test-driven Development (TDD), Asynchronous Programming, API Architecture, REST, REST API Architecture, Functional Programming, Agile Product Management, DevOps
  • Storage

    SQL Stored Procedures, PostgreSQL, Elasticsearch, Cassandra, MongoDB, Redis
  • Other

    RESTful APIs, API Integration, WebSockets, Data Architecture, SOA Architecture, Software Consulting, Consulting, Estimations, Technical Consulting, Consultation, Technology Consulting, Product Management, Software Project Management, Project Management, Apache Cassandra
  • Platforms

    Android, Linux, iOS


  • Master's degree in Electrical Engineering
    2011 - 2012
    University of Minnesota - Minneapolis, MN, USA
  • Bachelor of Science degree in Electrical Engineering
    2007 - 2011
    University of Minnesota - Minneapolis, MN, USA
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