Torsten Marek        

Freelance Senior Software Architect & Developer

Main Competences

Software Architecture, Data Design, Backend & Frontend Development, Microservices, Cloud, API Design, Single Page Apps, Prototyping

Interdisciplinary Communication, Agile Software Development, Scrum, Kanban, Pair Programming, Code Reviews, Team Lead

Work Experience / Projects (excerpt)

Since September 2017

23WAYS: Freelance React Native Developer

Implementation of a prototype for a maps app for ios: technology-stack evaluation, implementation of prototype, guidance while testing & deploying

May - October 2017

Edenspiekermann AG: Software Architect and Developer

Analyze and improve existing system architecture of a ruby on rails backend & reactjs frontend to cope with performance peaks, data modelling, extending existing cms, implement and improve api in ruby on rails for frontend. Frontend/Javascript: Security measures & RSA encryption for api calls

September 2016 - April 2017

Own Product Development

Prototype an event tracking app with React JS / React Native.

Since 2012

Sennheiser Electronics GmbH & Co. KG

Design of core product DB, architecture & development of multi-client, multi-language CMS as single page app, data consolidation & aggregation, team lead. Ruby/Rails/JS/Postgres


Das Büro am Draht GmbH - Facebook App Carstyler for Audi.

Javascript, jQuery, FB API, further: Java backend, REST api


TD Solutions Berlin

Agency: Various projects in Ruby/Rails/JS


Freelance Javascript Architect & Software Developer at CmyC Germany GmbH

Startup: Check my clip. Web 2.0 Casting Portal with Video/Audio/Foto content.

Architect & Lead Developer of Javascript. Javascript effects for frontend: coverflow, navigation, tabbing, visual effects. OO JS, event-driven design, further php


Samedi Berlin

Startup: doctor’s appointments in Ruby/Rails/JS


ID Media Berlin

Various projects, 2007: agency-internal product development in Ruby/Rails/JS


Own startup: democracy online today

Grimme Online Prize awardee 2002

Since 1998

Various agencies in Cologne & Berlin

Software development for the web

Main Technologies

Javascript, ES 6

React JS, React Native



PostgreSQL, MySql, Redis, Solr, Elasticsearch


About Me

Diplom Informatiker university degree

RWTH Aachen: studied 6 Years “Informatik” with medicine as a secondary subject.

Married / 1 Child

I enjoy to work in agile environments with experts who care about their product and code. Loving big challenges, clean code and caring about communication.


German (native)

English (fluent, business)

Basic conversation skills:







Torsten Marek

Weserstrasse 15, 10247 Berlin

+49 176 2264 3265