Well...
I have done this before: big data, small data, mathematical programming... So I could provide you with an answer very quickly.
I copied my developer profile:
Programming Languages: C/C++/C#, Java SE/J2EE, Perl/Dos/Bash Scripting, Fortran, ABAP, SQL, HTML, Assembler
Development Environments: Visual Studio 2010, Eclipse, Matlab, Mathematica, SAP, GCC
Other Software Experience: Intel/AMD64, Tesla GPGPU, VHDL (Xilinx Virtex/Wildstar VME), Microsoft HPC Cluster Server, HyperV, SAP, Microsoft Office, LaTeX, Oracle, MySQL, Apache/Tomcat WebServers
Other CS Experience: theoretical computer science, neural networks & machine learning, image processing, cryptography
Operating Systems: Windows NT, Windows XP, Windows Vista, Windows 7, Windows 8, Mac OS X, Linux