Task: - Build a basic container (Python, Cloud Run) with: - Uniform API contract (POST /invoke, JSON schema) - Tracing (OpenTelemetry) - Structured logging (JSON) - Idempotence mechanics (key + request fingerprint) - Policy/security guardrails (body limits, PII redaction, secrets, IAM) - Derivation of workload-specific containers (e.g., db.write, http.call, pubsub.publish) - Required skills (please provide examples from real-world projects): - Google Cloud Run & Cloud Functions Gen2 (production experience, not just "Hello World") - Python (middleware, decorators, packaging as an internal library) - OpenTelemetry (tracing + propagation, not just logs) - Idempotence Write/Webhook Flows in Distributed Systems - Pub/Sub, Cloud Tasks, Cloud SQL (PostgreSQL), Secret Manager - Docker Multi-Stage Builds and CI/CD (e.g., Cloud Build / GitHub Actions) Nice to have: - Transactional Outbox Pattern - GCS Signed URLs / Upload Flows Important: This is not a frontend, app, or standard API project. We are looking for someone who builds systems, not just endpoints. Application is ONLY worthwhile if you provide these 3 things: - A concrete example where you implemented idempotency + retry + at-least-once in production (Project name + exactly what you built, no buzzwords) - A concrete example where you promoted tracing across multiple services (Brand name of OTel/Tracer doesn't matter — what's important is: What was the span model?)