OOP, solid, design pattern, Database ortamları (Mysql, Mssql, postgre vs), SQL, Web sunucuları (IIS, nginx vs), CI/CD (DevOps), Docker, Git, Caching(redis vs), Logging (Elasticsearch vs.), Security(Authentication & Authorization (JWT, OAuth)), Messaging Queue (RabbitMQ, Kafka vs), System Architecture (Microservice, monolith vs), Transactional (outbox & inbox pattern vs.), API yapıları (Rest, soap, graphQL, socket vs),
Aklıma gelenler bunlar.