Jan 2022 – May 2023 · 1 yr 4 mos · Hamburg, Germany · Remote

• Further development of the navigation app Hermes couriers use to deliver parcels in Germany.
• Use of Extreme Programming (XP) practices on a daily basis to deliver high quality software:
• Pair/Mob-Programming
• TDD
• Our team successfully conducted a huge migration of the map SDK on time thanks to XP practices

Jun 2021 – Oct 2025 · 4 yrs 4 mos · Munich, Bavaria, Germany

• Working as external consultant for
• Autoscout24
• Hermes
• Deutsche Bahn
• As well as a couple of appDev’s in-house projects

Jun 2021 – Dec 2021 · 6 mos · Munich, Bavaria, Germany · Hybrid

• Led the redesign of the search screen, the most used screen in the app.
• Successfully owned and executed the integration of the leasing feature into the same search screen, delivering it before a tight deadline without known bugs.
• Our team was the first to finish this feature at such high quality standard.

Feb 2016 – Jun 2021 · 5 yrs 4 mos · Munich y alrededores, Alemania

• Conception and development of the CHECK24 Android app with focus on financial products like MoneyTracker multi-banking product, as well as C24Bank.
• Also worked on other Check24 products like Versicherungscenter and Legal Insurance.
• Accomplishments:
• Successfully led the migration of the money-tracker app architecture to web sockets with the introduction of new PSD2 law for banking apps. As a result, we were the first multi-banking app in Germany to successfully implement PSD2, ahead of our competition.
• Actively fostering the importance of testing to create high quality apps.
• At MoneyTracker, we had 3 week release-cycles. In nearly 4,5 years we only needed 3 hot fixes.
• Testing:
• Full introduction of Integration testing in several projects, also in the form of Snapshot tests.
• Creation of tools to facilitate writing Snapshot tests with specific user settings.
• Mitigation of flakyness in integration tests as well as reducing its build times through techniques like "test sharding" and "mocked server apis"
• Introduction to new testing concepts such as "mutation testing" and "property-based testing".
• Training:
• Active mentoring of newcomers.
• Actively coaching over 80 Android developers company-wise mainly on topics around testing through inhouse tech-talks and training sessions.

Jan 2015 – Jan 2016 · 1 yr · Braunschweig y alrededores, Alemania

• Development of Android applications for in-house projects as well as a consultant

Mar 2014 – Dec 2014 · 9 mos · Braunschweig y alrededores, Alemania

• Further development of the Pizza.de Android app and its optimisation to adapt its design to tablets.
• It originally belonged to Pizza.de GmbH and was acquired by Lieferando (German branch from Takeaway.com)

Oct 2012 – Jan 2013 · 3 mos · Kaiserslautern, Germany

• Project for John Deer in an international team of 8 people
• Use of informal agile methodologies
• Extension of an existing iOS app to run on a brand-new tractor device.
• Search of the most suitable technology able to run on that device
• UI design and development in that technology: JavaFX. Use of CSS
• Assistance for the connection between frontend and backend

Mar 2011 – Jun 2011 · 3 mos · Kortrijk, Belgium

• Project for the uni website, international team of 5 people
• Web Development : use of ASP.NET , C# , JavaScript and CSS tech.
• Development of SQL procedures