Softwareentwickler

• Further development and maintenance of the location-based event search engine loxicon.de
• Development of the location-based coupon search engine loxi-deals.de

Technologies: Ruby on Rails, HAML, SASS, PostgreSQL, HTML, Javascript, GeoRuby, Solr

Freelance work and consultancies

Projects (Extract):

• Backend Developer for ucm.agency (04/2022 to current)

• Core Activity: Backend developer for ucm jobs

• Technologies: Ruby on Rails

• Backend Developer for odacer finanzsoftware GmbH (10/2021 to 03/2022)

• Core Activity: Backend developer for papierkram.de

• Technologies: Ruby on Rails

• Backend Developer for Getsafe Digital GmbH (09/2020 to 03/2021)

• Core Activity: Backend developer for Get Safe, API development for UK aggregators

• Technologies: Ruby on Rails

• Backend Developer for innogy SE (10/2019 to 04/2020)

• Core Activity: Backend developer for bit.B

• Technologies: Ruby on Rails

• Software Architect, Lead Developer for Mintano UG (04/2019 to 04/2020)

• Core Activity: Lead development of web application and API for iOS app

• Technologies: Ruby on Rails, AWS

• Backend Developer for enervolution GmbH (02/2018 to 07/2018, 10/2019 to 01/2020)

• Core Activity: Implementing several MVPs for Innogy

• Technologies: Ruby on Rails

• Digitalization of all workflows for custom tailoring for R. Paulsen GmbH, Original Veddel (12/2017 to present)

• Core Activity: Digitalization of all workflows from order taking embroidering to shipment

• Technologies: Ruby on Rails

• Marketing website Spruchmaschine for 1. FC Köln (06/2016 to 08/2017)

• Core Activity: Backend implementation

• Technologies: Ruby on Rails, Sidekiq, Redis, Sendgrid

• Event Sourcing based Social Network Human Trust for Wacku UG (09/2016 to 04/2017)

• Core Activity: Backend implementation

• Technologies: Ruby, Event Sourcing, Redis, Elasticsearch, Docker

• Smart mini-websites with sharing-superpowers for heysite.io (10/2015 to present)

• Core Activity: Conception to finalization of pingdeck.com

• Technologies: Ruby on Rails, SASS, PostgreSQL, HTML, Javascript

• Tailor-made Web Shop for Köln-Düsseldorfer Deutsche Rheinschiffahrt AG (07/2015 to 10/2019)

• Core Activity: Implementation of a custom made shop for selling boat trip tickets

• Technologies: Ruby on Rails, SASS, MySQL, HTML, Javascript

• 360° Electric Sales Portal for BMW (05/2013 to 04/2015)

• Core Activity: Implementation of an electric sales portal for all BMW car dealers around the world selling BMW i cars

• Technologies: Ruby on Rails, SASS, MySQL, HTML, Javascript

• Web-based Urban Refugee Database for International Rescue Committee South Sudan (01/2013)

• Core Activity: Conception to finalization of a database for managing household surveys of urban refugees in Juba including, M&E, reporting, analyzing and import/export functionality to UNCHR ProGres servers

• Technologies: Ruby on Rails, HAML, SASS, MySQL, HTML, Javascript

• Web-based Database for Information Management for Karen Human Rights Group (01/2012 to 05/2012 and 09/2012 to 11/2012)

• Core Activity: Conception to finalization of a database with M&E, media support, geo-data, various metadata, user management, workload-management, statistics etc.

• Technologies: Ruby on Rails, HAML, SASS, MySQL, HTML, Javascript