My study of Telecoms Engineering at the Escuela Tecnica Superior de Ingenieros de Telecomunicación (ETSIT) in Madrid comprised:

• linear algebra, calculus, physics, chemistry, technical drawing
• electrical machinery, electronics, mechanics, surveying, radioastronomy, industrial processes, electronic components
• network analysis and synthesis, electromagnetic fields, microwaves, antennas, transmitters and receivers
• statistics, advanced maths, information and modulation theory, industrial instrumentation, telecontrol systems, economics
• computer architecture, programming languages (assembler and Fortran)

• real-time computers for process control, operating systems and programming
• hardware configuration and programming of Intel 8085/x8086 microprocessors (in Assembler, PLM and Pascal)
• development of mathematical software (in FORTRAN) for computing and controlling the power flow of electric grids.
• cryptography, hashing and symmetric/asymmetric algorithms; I programmed several of them in Assembler, Pascal, C ...
• Hardware Security Modules, microcontroller based. I did the design and programmed them in C.
• IBM Series 1 software system to handle the HSMs (in Series 1 Assembler).
• Configuration of SNA VTAM/NCP
• Design and support of a VISA card online autorization system, using Stratus fault-tolerant computers.
• Analysis and requirements of smart card functionality for identity and payment purposes.
• Analysis, requirements and validation of SIM cards for the mobile communications area
• Specification of java card SIM applications. Programming and validation of some of them.
• Program management of developments for 3G SIMs with public key cryptography
• Product management of SIM programming and mobile handset validation tools
• Product management of contactless (NFC) SIMs

I did substantial development in Assembler, C, Python and Ruby.