zermelo fraenkel LTD

we build high quality software

what we offer


we design, build, and maintain fast, secure, well-tested, and highly usable web services, whether that is APIs for robots or UIs for humans


highly experienced with DevOps toolchains and processes: building CI/CD pipelines, testing infrastructure, application monitoring, logging


we love (sometimes hate, but mostly love) working with the Python web ecosystem with experience, ranging from simple APIs to large and multi-layered architectures

our approach


theodore keloglou

Theodore likes programming minimalist software, building ablative applications, and looking up words in the thesaurus.