Sebastian Sastre

Experience

• Senior Software Entineer

  Telna, 2019 - present
  Smalltalk, Rust, Golang, Python, bash, TDD, Docker, SvelteKit, NextJs, Tailwind
  • Started working in a full-time position for Telna. Working directly with the Principal Telecommunications Architect in the roaming software that drives many terabytes per day for mobile telecommunications.
  • Design and implemented Proposto, an MVP using SvelteKit and Tailwind for the frontend and Pharo Smalltalk for the backend.

• Lead Software Engineer

  Sulvo, 2017 - 2018
  AWS, GCloud, JavaScript, Meteor, VueJS, NodeJS, MongoDB, Docker, Machine Learning
  • Working as a full-stack developer in a full-time position at Sulvo, a remote-first company acting on the digital advertising segment. Designed and developed their new ad server that flawlessly operates more than a billion transactions per month.
  • Scored 92% in ML course

• Full-stack Software Engineer

  StartedSquad, 2015 - 2016
  Swift, ReactJS, Meteor, CircleCI, AngularJs
  • Published Apito app in the AppStore. A native iOS app developed in Swift and it’s admin dashboard in JavaScript.
  • Helped across 4 teams on frontend tasks.

• Open Source Developer

  2014 - 2015
  Smalltalk, jQuery, JavaScript
  • Published flow-stack framework (MIT)
  • Published Mapless Object Persistence framework (MIT)

• Independent consultant

  2013 - 2014
  Credit Card Processing, Smalltalk, Seaside, AngularJS, Design Thinking
  • Web app for the telecommunications industry.
  • Helped in a back-office frontend application for ZorgDomein in a team of 15-20 developers.
  • Helped Freiburg IT Systems to implement a back-office system for Pitztal’s CRM using Seaside.
  • Completed Design Thinking Lab from Stanford University and Human-Computer Interaction from San Diego University.

• Flowing

  2009
  Smalltalk, Seaside, Object Oriented Database, jQuery, Marketing, UX/UI Design, Product Design, Business Development, MongoDB, Proprietary Frameworks, Public Speaking
  • SaaS MVP. Presenting MVP to the regional group of ad agancies.
  • Airflowing launch (RIP 2015). It was a milestone receiving praise from Guy Kawasaki, Seth Godin, Derek Sivers among others, specially from flowing’s own clients. Airflowing was a SaaS, Software as a Service, web application for end-to-end team management on medium/small business focused on services. Meant to help clients to have control of sales, operations and cashflow.

• Galenial Startup

  2007 - 2008
  Smalltalk, Crystal Reports, Object Oriented Database, Non-boolean search
  • Developed the prototype of a product for medical practice management using Dolphin Smalltalk.

• Independent consultant

  2003 - 2005
  Smalltalk, Crystal Reports, Object Oriented Database, MySQL, PostgresSQL
  • Web app for the telecommunications industry.
  • Developed a Windows based desktop e-commerce application for Cromosol S.A..

• Project Leader

  TEING 1998 - 2000
  Smalltalk, Crystal Reports, PostgresSQL, Proprietary Hardware
  • The developed product was a control system to manage and control toll processing in a Road Concession Company.