I have created projects in areas of EMV payment, mass payment, local payment, and access control systems. I work with U2F, Fido2, OpenPGP, PIV, TPM, PKCS#11 (and the other), EMV, Mifare, CIPURSE, Calypso technologies and have created open-source implementations for some of them. I am one of the proxmark3 developers and several technologies for security keys.I can create security schemas and can make security audit.And I can create architecture for various types of payment systems and systems with high security needed.Experience:• More than 20 years of experience in managing teams of up to 30 people.• More than 18 years of experience as a Project Manager leading teams of up to 100 people and delivering projects to an international clientele, including five worldwide corporations.• More than 24 years of experience in C/C++/JavaScript/Python/C#/Delphi software development and software architecture design.Specialties: • Management• Social and Organizational Psychology (MA)• Programming (MA)• Electronics (MA) Programming technologies:main languages: C, C++often used languages: Python, javascript (Nodejs+Reactjs)Oleg is in charge of the Software Development Division of LOT Group (Lotteam), an engineering and software development vendor that develops and manufactures Intelligent Transport solutions and access control systems, focusing on Automatic Fare Collection (AFC) systems for metros and the ground public transport. In particular, the implemented projects include major AFC and access control systems for the metro subways of two nations’ capitals, the urban electric train of the 3 +million Ukrainian capital of Kyiv, and more. In addition to its public transport-related service offering, Lotteam excels in delivering a range of web development services to customers worldwide, the major areas of specialization being custom online ordering solutions, travel booking systems, custom online surveys, voting solutions for online contests, social networking websites, job board web sites, online directories of real estate properties for sale and rent, online Real Estate market analysis tools, online shops, and online service marketplaces for different niches.