𝗪𝗛𝗔𝗧 𝗬𝗢𝗨'𝗟𝗟 𝗪𝗢𝗥𝗞 𝗢𝗡. You'll build and maintain the backend infrastructure powering our AI applications. * REST APIs with streaming responses (Server-Sent Events) for real-time LLM interactions. * Multi-provider LLM orchestration across Anthropic, Google, and other providers. * PostgreSQL systems with complex JSONB structures and async connection management. * Redis-based event systems for real-time state synchronization. * Voice AI pipelines integrating WebRTC, speech-to-text, and text-to-speech services. * Deployment infrastructure on GCP Cloud Run and AWS Fargate. 𝗥𝗘𝗤𝗨𝗜𝗥𝗘𝗗 𝗦𝗞𝗜𝗟𝗟𝗦. These are non-negotiable. You must demonstrate strong experience in all of the following. 𝗣𝘆𝘁𝗵𝗼𝗻 𝗕𝗮𝗰𝗸𝗲𝗻𝗱 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁. * Python 3.11+ with strict type hints throughout your code. * Async programming: asyncio, async/await patterns, understanding of the event loop. * Pydantic v2 for data modeling, validation, and serialization. * FastAPI for building REST APIs, including streaming responses. 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲 & 𝗖𝗮𝗰𝗵𝗶𝗻𝗴. * PostgreSQL: schema design, JSONB operations, indexing strategies (including GIN indexes). * asyncpg or similar async PostgreSQL drivers. * Connection pooling and session management in async contexts. * Redis for caching and pub/sub patterns. 𝗧𝗲𝘀𝘁𝗶𝗻𝗴 & 𝗖𝗼𝗱𝗲 𝗤𝘂𝗮𝗹𝗶𝘁𝘆. * Pytest with async test patterns (pytest-asyncio). * Writing testable code with dependency injection. * Familiarity with common design patterns: singleton, chain of responsibility, factory. 𝗘𝗻𝗴𝗹𝗶𝘀𝗵 𝗣𝗿𝗼𝗳𝗶𝗰𝗶𝗲𝗻𝗰𝘆. * Fluent written and spoken English for daily communication with international clients and team members. 𝗣𝗥𝗘𝗙𝗘𝗥𝗥𝗘𝗗 𝗦𝗞𝗜𝗟𝗟𝗦. These will strengthen your application and are reflected in compensation. 𝗖𝗹𝗼𝘂𝗱 & 𝗗𝗲𝘃𝗢𝗽𝘀. * Docker: writing Dockerfiles, multi-stage builds, container optimization. * GCP experience: Cloud Run, Cloud SQL, or equivalent AWS services (Fargate, RDS). * Environment-based configuration management. * Health checks, graceful shutdown patterns, production-readiness practices. 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲. * Hexagonal architecture (ports and adapters pattern). * Domain-driven design principles. * Event-driven systems with Redis Pub/Sub or similar. * Experience designing systems that need to scale. 𝗥𝗲𝗮𝗹-𝘁𝗶𝗺𝗲 𝗦𝘆𝘀𝘁𝗲𝗺𝘀 (𝗻𝗶𝗰𝗲 𝘁𝗼 𝗵𝗮𝘃𝗲). * WebRTC fundamentals. * Websocket implementations. * Experience with real-time streaming applications.

Lead Python Backend Developer

Emma

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Skills wanted:

Language(s) required:

Calia

Calia

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calia.ai/

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