Tobias Pfeiffer

Worked on a big Elixir & Phoenix monolith with a focus on the payments domain, automating processes to ensure safe, quick & reliable payments of millions while improving processes and technology company wide. Implemented features to help our payments efficiency and product offering: automatic invoice payments, bank integration via PAIN XML to automate payments, enable direct debit for huge sums & allowing non local currencies.

Engineering Lead for a team working in Ruby on Rails on topics ranging from local market adaptation, to legal and delivery promise.

Consulting, Teaching and Development. Currently helping a company realize their first Elixir project.

Lead a team of 15 together with the CTO, handling the day-to-day needs of the team. * Help, mentor & guide colleagues through 1o1s, pairing sessions, pull request reviews and knowledge sharing sessions * Run retrospective and iteration meetings, continously adapting and improving processes * Screen and interview candidates * Gather problems and requirements to define and discuss solutions * Run integration projects with customers and other involved parties

Selbstständig im Bereich Lehre und Softwareentwicklung. Vor allem externer Dozent an der Humboldt Universität Berlin für den Kurs "Grundlagen der Webanwendungsentwicklung mit Ruby on Rails". Ansonsten unter anderem Erstellen von Lehrmaterialien für Webentwicklungskurse.

Helping operations and partners deliver packages on the same day. * Build and maintain applications to track shipments, plan tours and manage all required logistics data in Ruby on Rails, Elixir and Phoenix as well as JavaScript (AngularJS, React) * Stepped in for the CTO during a sabbatical * Identify and fix performance bottlenecks * Run retrospectives and others meetings

Worked on various client projects mostly in Ruby/Rails and JavaScript with AngularJS but also one project with Elixir and Phoenix. Introduced practices such as Retrospectives and CI build servers to the company. Mentored Junior-Developers.

Entwicklung am Shoes Projekt. Shoes ist ein GUI toolkit für Ruby, dass die Erstellung von GUI Applikationen einfach macht und insbesondere Einsatz in der Lehre findet (speziell für Kinder). Mehr Informationen zum Projekt hier: http://shoesrb.com/

Entwicklung von Ruby on Rails Applikationen im Team unter anderem mit spree ecommerce.

Studentische Hilfskraft in unterschiedlichen Positionen am Lehrstuhl für Internet und WWW-Technologien von Professor Meinel. Unter anderem Betreuung (Korrektur von Übungen und Klausuren etc.) der Veranstaltungen für die Vorlesungen "Internet- und WWW-Technologien" und "Internet Security". Außerdem schreiben von Tutorials für die online Security Plattform Tele-Lab.

Projektmanagement, verteilte Softwareentwicklung

Software Architekturen, agile Software Entwicklung, Internet und Sicherheitstechnologien