Working at ZWEIDENKER

We are an international team of developers, strategists and designers in Cologne, building connected digital products since 2009. Our open positions are advertised at ApptiveGrid — the platform that grew out of exactly this work.

Where the positions are advertised

ApptiveGrid is the platform on which we build most of our business applications today. Since most of the development happens there, every open position is advertised centrally on the ApptiveGrid careers page.

Whoever starts there works in the same place with the same people as the team whose references you see on this site: ApptiveGrid GmbH shares our office at Brüsseler Platz in Cologne and has the same managing directors.

The careers page is in German — the working language of most of our projects. Written and spoken German is therefore expected for most roles; English is the second language in the team.

To the ApptiveGrid careers page

What the work looks like

Large software projects are only partly plannable at the start. That shapes how we cut teams and how much responsibility sits, from day one, with the people who write the code.

Agile, in short cycles

Scrum and Kanban, working results at the end of every sprint. Not a plan nobody ends up following, but a running system that gets better with each sprint.

Small, interdisciplinary teams

Development, concept and design sit together and talk to the client directly. Responsibility sits in the team, not in a layer above it.

Product and project

We build custom software for clients and, with ApptiveGrid, our own platform. Each feeds the other: what a project needs often shows up in the product first.

What we work with

From 20 reference projects: mobile applications for iOS and Android, Flutter for both platforms at once, Pharo for backends and research projects, and ApptiveGrid wherever a standard platform beats writing code.

iOS & Android
native development
Flutter
one codebase for both platforms
Pharo
Smalltalk, for backends and research
ApptiveGrid
our own platform

Nothing that fits advertised?

Write to us anyway. A short note about what you want to work on tells us more than a complete cover letter — and if nothing fits right now, we know who to ask as soon as that changes.