Design, implement, and maintain backend systems using Python. Develop and optimize queries for search and data operations using ElasticSearch, MySQL, DynamoDB, and Redis. Collaborate with cross-functional teams to integrate backend services with other systems and APIs. Troubleshoot and optimize performance issues, particularly in complex search applications. Understand and support custom machine learning models, contributing with theoretical knowledge and integration using libraries like TensorFlow or PyTorch. Participate in architectural decisions and code reviews to maintain high-quality standards.