Conducted simultaneously with undergraduate/graduate educations at multiple universities, resulting in the publication of two academic books
Computer forensics, AI, big data, signal/audio/speech/image processing, reverse engineering, cryptology, cyber security and interorganizational data communication
C/C++: Backend software for data processing and machine learning
C#/.NET/WINFORMS/GDI+/WPF: GUI development
Python: AI, R&D and data pre-processing
Java/Spring Boot: Recently used for RESTful services
Advanced algorithm design/analysis/optimization/concurrency/parallelization/complexity reduction
OOP in various design patterns/frameworks
Machine learning/classification for petabyte-scale/cumulative/real-time evolving datasets involving audio/image/meta/text data on high-load systems
Multithreading/OPENMP/CUDA
IBM Power Systems
Speech processing/enhancement for ASR/speaker identification
Face recognition
Porting/Re-implementing between C/C++/C#/Java/Python/Delphi
Disassembling/decompiling/reverse engineering/testing and improving of applications/libraries developed in C#/C/C++/Delphi
Decryption of data encrypted with basic cryptology algorithms without brute force attacks
Periodic AES/S-Box cryptanalysis under PhD supervision
Analyzer software for packet capture (PCAP) data/deep packet inspection/custom GSM-related binary files
Application-specific file carving/recovery/perceptual hashing algorithms
Data recovery algorithms for special file formats without header/footer
Text deasciifying/normalization/mining algorithms
Adapting JWT/cryptographic hashing/LDAP authentication
Additionally development of card pass/employee/salary/deduction/POS management software
Windows/Red Hat/Ubuntu/POSIX compliant systems
Oracle/MSSQL/FAISS/MILVUS/Redis/MongoDB
Database&Query optimization/SQL tuning/CSV-JSON-XML-XLSX parsing/reporting
TCP Socket/SOAP/REST/WCF services
Dlib/Keras/MXNet/TensorFlow/InsightFace/Kaldi/Sphinx/Whisper/FFMPEG
GitLab/YouTrack