Cristian Serb

Blockchain Engineer & Consultant

I was a full-stack web-engineer and tech lead for 18 years. I switched my professional focus towards blockchain technologies in October 2017. Since then I've been working on financial products for crypto currencies as well as technologies around blockchain with a product driven approach for developer accessibility.

Experience

  • amatus

    Technical Researcher

    Technical Researcher

    amatus

    Berlin

    Jan 2019 - Present

    Technical Researcher

    Researching possibilities for rapid blockchain prototyping. Releasing open source software along the way: http://github.com/cocol-project

    Crystal • Rust

  • amatus

    Interim CTO

    Interim CTO

    amatus

    Berlin

    Jul 2018 - Jan 2019

    Interim CTO

    CTO for in-house blockchain ventures

  • solarisBank

    Blockchain Research

    Blockchain Research

    solarisBank

    Berlin

    Jan 2018 - Jul 2018

    Blockchain Research

    Technical & product research. Part of a team conceptualizing financial products around crypto currencies

  • solarisBank

    Tech Lead

    Tech Lead

    solarisBank

    Berlin

    Sep 2016 - Oct 2017

    Tech Lead

    Building the first debit-card product for solarisBank

    Docker • Ruby (Grape, Customized) • Some XML magic

  • Freelancing

    Engineer & Tech Lead

    Engineer & Tech Lead

    Freelancing

    Sep 2006 - Dec 2016

    Engineer & Tech Lead

    Ruby • JavaScript (jQuery, React) • Objective-C • Docker • PostgreSQL

    Hired & Onboarded new team members • Introduced Scrum and Kanban • Introduced safe to fail experiments • Pioneered the adoption of cynefin framework

    Banking • Telecommunication • Social Media • Web Apps • Mobile & Web ad-tech

  • Home eat Home

    CTO

    CTO

    Home eat Home

    Berlin

    Jan 2015 - Feb 2016

    CTO

    Smart meal bags (think marley spoon) sold via customized vending machines

  • LX e-commerce solutions

    Tech Lead

    Tech Lead

    LX e-commerce solutions

    Berlin

    Feb 2014 - Jul 2014

    Tech Lead

    User engagement via online mini games

    Hired & Onboarded new team members • setup technical strategy

  • SponsorPay (Fyber)

    Tech Lead

    Tech Lead

    SponsorPay (Fyber)

    Berlin

    Apr 2011 - Oct 2012

    Tech Lead

    Building the mobile advertisement platform for SponsorPay (now Fyber)

  • Vodafone

    Senior Web-Developer

    Senior Web-Developer

    Vodafone

    Düsseldorf

    Jun 2008 - Oct 2009

    Senior Web-Developer

    Building the email web client for vodafone360

  • millepondo services

    Full-Stack Web-Developer

    Full-Stack Web-Developer

    millepondo services

    Köln

    Jan 2007 - Jan 2008

    Full-Stack Web-Developer

  • Videotaxi GmbH

    Full-Stack Web-Developer

    Full-Stack Web-Developer

    Videotaxi GmbH

    Köln

    Jul 2000 - Jul 2004

    Full-Stack Web-Developer

Projects

  • Cocol Project

    Rapid blockchain prototyping library in Crystal

    http://cocol.io

  • Purple Protocol

    Purple is an experimental blockchain protocol that has been built from scratch with the main purpose of solving the scalability problem in current decentralized blockchain systems. Its aim is to provide a transaction speed similar to the centralized system VISA which can in peak times achieve up to 50.000 transactions per second, but in a decentralized setting.

    https://purpleprotocol.org/

Skills

  • Ruby
  • Elixir
  • Crystal

Contact