Computing is rapidly developing to be distributed over the internet in both the scientific and commercial domains. Scientific computing has been at the forefront of this trend via its development of Grid and Cloud computing. At the same time, computational research is rapidly growing in importance worldwide, and has in many cases reached predictive capability. Finnish science is at the forefront of this development. Finnish computational research leads regularly to publications in the top science journals and forms the basis for numerous international collaborations. Maintaining and strengthening further this level requires continuous development of the computational infrastructure, both on the mid-range and high-performance computing level. This infrastructure application outlines a way to take the state-of-the art distributed Grid and Cloud computing infrastructure “FGCI” in Finland into a new stage, where it will be extended towards handling Big data, data mining and machine learning. This “FGCI Stage 2” will be a key part of the national computational ecosystem in Finland. It will form the indispensable mid-range computational infrastructure for a large user base, complementary to the supercomputers at CSC. At the same time, it will implement new large-memory and large-disk solutions tailored for a Big data computing paradigm.