Lead Back End Developer (Python)

Web Design Sun is a fully remote software development company founded in 2012, building international products across various domains. We are seeking a Lead Backend Developer with a strong theoretical background and practical experience to lead backend development across multiple projects.

• Lead backend development across multiple projects
• Design scalable, high-load, distributed systems
• Make and justify architectural decisions and trade-offs
• Work with both monolith and microservices architectures
• Collaborate closely with product, DevOps, and ML teams
• Take ownership of technical decisions and system quality
• Mentor developers and drive engineering standards

• Strong understanding of System Design
• Deep knowledge of Distributed Systems
• Deep knowledge of High-load architectures
• Solid theoretical foundation: ACID / BASE / Consistency, CAP / PACELC
• Algorithms & data structures (complexity awareness)
• Strong Python expertise
• Experience with Django + DRF
• Experience with FastAPI + SQLAlchemy
• Experience with PostgreSQL (RDS)
• Experience with Microservices architecture & patterns
• Experience with Monolithic systems
• Experience with Redis / ElastiCache
• English — B1+, Ukrainian/Russian — C1+/Native

• Fully remote
• Flexible schedule (results-oriented)
• Opportunity for additional hours (optional, paid at normal rate)
• Expectation of availability in critical situations