Responsive web, mobile view and desktop view webapps.
Smartphone apps development. Frontend multidevice app development (android, ios, windowsphone).
Backend development. Implementation of servers for multiple purposes. RESTful APIs, twitter and telegram bots, network botnets, automatization scripts.
Artificial Intelligence and Machine Learning development. Training of the models & deployment.
Cryptographic algorithms, secure systems. RSA, Elliptic Curve Cryptography, Paillier cryptosystem, Shamir's Secret Sharing, ...
Decentralized and distributed systems. P2P networks, blockchain, IPFS.