Old Reliable Tech is a software consultancy and development house based in the UK.

We help organisations, large or small, to solve real business problems and make rapid progress on their software projects. We're dynamic, dependable, and we care deeply about seeing our partners succeed.


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Some of our favourite tech:

If you've got a technical challenge, we can help.



Old Reliable Tech worked with ECMWF to port some of their core libraries (ecCodes and Magics) to Windows - a feat which has never before been managed - and package them on conda-forge. The project was delivered on-budget and ahead of time. ECMWF were so happy with our work that the project was extended to include a Windows port & package for CodesUI and a package for MetView.

Porting ECMWF core software packages to the Windows platform and integrating them through Conda has been a very welcome new feature for us and our users. This work allows users to use these powerful packages for the first time under Windows to access and visualise a wide range of meteorological data provided by ECMWF. Old Reliable Tech's work did not only enable these new possibilities, but also lay the foundations for automatic continuous integration testing and a setup on GitHub to allow for external code contributions. Old Reliable Tech's expertise on Open Source developments and tools enabled a fast and successful implementation.

-- Dr Stephan Siemen
Head of Development Section
Forecast Department, ECMWF