- Development of a service in C for automatic renewal, renewal of kerberos tickets with Apache Kafka integration, local logging and JSON config with arrays / strings- Writing PAM / NSS modules in C to implement custom authorization / authentication methods in linux- Implementation of a plugin for an LDAP server in C / C ++ in order to evenly distribute the load from consumer requests and save all query data in PostgreSQL, sending it to Apache Kafka- Writing a C# backend to get users/groups from LDAP and multithread them over UNIX sockets in XML format