Finally - after successfully passing the engineering exam in December, I finished designing an ECG analysis software, capable of filtering the signal (removing baseline wandering and wideband noises), detecting QRS complexes (with over 92% accuracy, which will be quite easy to improve even more in future) and, based on this detection, arrhythmias (including brady- and tachycardias and bundle branch blocks, the latter being something hardly any other software detects right now).
The software reads files with acquired ECG signal (like the ones generated by Holter monitor), computes heart rate and, despite still proving many failures (especially while analysing very noisy signals) will probably be developed further to correct all the errors and work in real time during the very acquisition of ECG signal from the patient.
Apparently it was awesome enough for the board of examiners to award me with my first degree ever - that is, engineer's degree.