5+ years of commercial development experience with Python and Django Experience with relational databases (PostgreSQL required: schema design, writing and profiling complex SQL queries, performance optimization) Hands-on experience with task queues (RQ, Celery) and caches (Redis) Industrial experience working in Scrum/Agile teams, confident use of team development tools (git, code review, issue trackers) Experience in writing tests and covering business logic with unit and integration tests Conversational English at B1 (intermediate) level or higher