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Pierre Killy, APIs Developer in Lidingö, Sweden
Pierre Killy

APIs Developer in Lidingö, Sweden

Member since September 17, 2016
Writing code since the age of eight, Pierre's love of technology has led him to earn a master's degree in computer science. From pure engineering to building processes for CI and CD on heavy-loaded infrastructure at Viadeo (100+ production servers), he co-founded a startup company as CTO. Pierre is a dedicated, enthusiastic leader, a creative solution-maker and a web engineering expert with more than a decade of experience.
Pierre is now available for hire


  • Hot-Take
    PWA, Ionic, AngularJS, Firebase
  • Earnest
    Node.js, AngularJS, AWS, PostgreSQL
  • Kwalito
    Node.js, MySQL, MongoDB, AngularJS, Ionic, Cordova


  • APIs, 9 years
  • Coordination, 8 years
  • Agile Software Development, 6 years
  • Microservices, 6 years
  • Leadership, 6 years
  • Remote Team Leadership, 5 years
  • Node.js, 4 years
  • CTO, 4 years
Lidingö, Sweden



Preferred Environment

Node.js, Linux, Git

The most amazing...

...thing I've built is the whole infrastructure, REST API, and mobile app for the startup I co-founded as a CTO, along with the team I recruited.


  • CTO

    2019 - 2019
    • Advised on MVP definition and roadmap.
    • Served as a hands-on CTO.
    • Evaluated and chose the technologies to use according to the vision of the company.
    • Consulted on upcoming crowdfunding.
    • Built the MVP.
    Technologies: PWA, Ionic, AngularJS, Firebase
  • Senior Full-stack JavaScript Engineer

    2016 - 2019
    • Created new microservices (API).
    • Developed new features.
    • Designed and implemented portfolio audit tools.
    • Improved the existing algorithms.
    • Fixed bugs.
    Technologies: Node.js, AngularJS, AWS, PostgreSQL
  • Co-founder | CTO

    2014 - 2016
    • Hired and managed a team of five in France and abroad.
    • Defined and implemented the technical architecture of the project.
    • Conceived and deployed the AWS back-end infrastructure based on Node.js.
    • Developed the API for our B2B partners.
    • Created the hybrid (Ionic) Android and iOS mobile applications.
    • Took an active part in company's vision, mission, business model and strategic partnerships.
    Technologies: Node.js, MySQL, MongoDB, AngularJS, Ionic, Cordova
  • Head of Production Rollout

    2011 - 2014
    • Migrated the rollout process from an archaic, handmade, untested, and very time-consuming monthly rollout to a daily, continuously integrated, unit-tested, build-promoted and smooth rollout process.
    • Coordinated every rollout of the platform including the website, the intern-use back offices, and batches.
    • Defined the processes with the product, development, infrastructure, localization, and quality teams before and after each rollout in order to improve and guaranty its quality.
    • Industrialized and optimized the continuous integration, and the release and rollout procedures.
    Technologies: Java, J2EE, Tomcat, MySQL, JavaScript, Memcached, CDN, Linux Debian
  • Founder

    2011 - 2011
    • Built which was a centralized platform to manage all your social media profiles: Facebook, Twitter, LinkedIn, and Viadeo.
    • Designed and developed the product fully.
    Technologies: JavaScript, HTML, CSS, Java, J2EE, Google App Engine, MySQL
  • IT Infrastructure Manager

    2010 - 2011
    • Maintained and improved the back-end infrastructure to absorb a growing charge.
    • Organized and optimized the production rollouts.
    • Defined the testing procedure and guaranteed its application.
    • Managed a team of two.
    Technologies: Linux Debian, Tomcat, Java, J2EE, Bash
  • Web Project Manager

    2007 - 2011
    • Designed and developed the localized Kizoa website in five languages and the administration interface for the marketing team.
    • Optimized the SEO.
    • Created the Kizoa slideshow viewer for Facebook and for Philiips NetTV.
    • Co-defined the company's KPIs.
    Technologies: JavaScript, HTML, CSS, jQuery, PHP, MySQL, Apache, Linux Debian
  • Embedded Software Engineer

    2007 - 2009
    • Validated the hardware provided by our supplier.
    • Ported the Linux kernel on the hardware.
    • Developed specific Linux drivers.
    • Designed and implemented a type of photo frame management software (daemons).
    Technologies: Linux Kernel, C ANSI, Hardware


  • Kwalito (Development)

    I founded and built from scratch the company, Kwalito.

    Healthy living starts on your plate and with Kwalito it becomes easy!

    Our mobile application verifies the composition of food products simply by scanning their barcode. If you are allergic, intolerant, vegetarian, vegan, pregnant, or simply want to eat healthily, Kwalito is made for all of you who, like me, read ingredients lists before buying.

    Available free of charge for Android and iOS on

    Alumni of Numa Sprint (Season 7) and Koudetat The Family. Kwalito were also integrated with Smart Food Paris, the first Food Tech incubator of Paris & Co (Incubators of the City of Paris).

  • (Development)

    easyNetworkin was a centralized platform to manage all your social media profiles: Facebook, Twitter, LinkedIn, and Viadeo.

  • Node.js Best Practices and Tips by Toptal Developers (Publication)
    This resource contains a collection of Node.js best practices and Node.js tips provided by our Toptal network members.


  • Languages

    JavaScript, Sass, SQL, HTML, Bash, CSS, TypeScript, C++, C
  • Libraries/APIs

    Node.js, Passport.js, React, jQuery, AngularUI
  • Paradigms

    REST, Scrum, Agile Software Development, Microservices, Test-driven Development (TDD)
  • Platforms

    Debian Linux, Linux, Visual Studio Code
  • Storage

    MySQL, PostgreSQL, Memcached, MongoDB, CouchDB
  • Other

    APIs, CTO, RESTful APIs, Leadership, HTTP, Engineering Software, Software as a Service (SaaS), Coordination, Product Management, Single-page Applications (SPA), Progressive Web Applications (PWA), Remote Team Leadership, 3D Printing, Angular Bootstrap
  • Frameworks

    Express.js, AngularJS, Ionic, React Native, Bootstrap
  • Tools

    NPM, GitHub, cURL Command Line Tool, WebStorm


  • Certificate (in progress) in MongoDB for Node.js
    2016 - 2016
    MongoDB University - Online (
  • Training in Entrepreneurship & Growth Hacking
    2015 - 2015
    TheFamily - Paris, France
  • Training in Search Engine Optimization
    2008 - 2008
    Ranking Metrics - Paris, France
  • Master's degree in Computer Science and Networks
    2002 - 2005
    CFA Ingénieurs 2000 (ESIPE) - Paris, France
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