He oversaw the development of several CAD programs in the field of integrated circuit design and simulation with another area of technical interest being computer-graphics and image-processing.

[2][3][4][5] This non-destructive distributed resistor-capacitor network approach is used extensively today around the world by the electronics industry to diagnose the quality of thermal paths after becoming an IEEE JEDEC standard in 2010.

Dr. Székely led MicReD to develop the T3Ster Thermal Transient Tester measurement equipment in 2000 as part of the EU PROFIT project.

Flomerics itself was acquired by Mentor Graphics Corporation in 2008 and MicReD is now part of its Mechanical Analysis Division.In 2000, he won the Harvey Rosten Award for Excellence in the Physical Design of Electronics with Marta Rencz for their paper titled "Dynamic thermal multiport modeling of IC packages".

[7] In April 2010, he won the International Dennis Gabor Award for the development of T3Ster technology for thermal testing of semiconductor packaging[8] and he became a Member of the Hungarian Academy of Sciences in the same year.