Python Developer

1 week ago

west bengal, India Voyantt Consultancy Services LLP Full time

Role Description We're looking for a Senior Python engineer to lead the next stage of our platform: multi-tenant SaaS with real-time chat/Jitsi integrations, a desktop tracker, and AI services. In this role you’ll architect and ship async APIs, model complex SQL schemas, use NoSQL where it fits, and build event-driven components with retries/Idempotency/DLQs. You’ll implement OIDC/OAuth2 via Keycloak, add org-level RBAC/ABAC, and make logging/metrics/traces first-class. You’ll own features end-to-end—from spec to rollout—across Docker/K8s and S3-backed storage. What you'll do Design and implement async Python services (FastAPI/Django, Pydantic, SQLAlchemy). Model multi-tenant data (row/DB-per-tenant trade-offs, partitioning/sharding); write and tune complex SQL ; use NoSQL where appropriate (Redis/MongoDB). Build event-driven components (Redis/Kafka/RabbitMQ): idempotency, retries, DLQs, backoff. Implement SSO with Keycloak (OIDC/OAuth2) ; org-level RBAC/ABAC ; service-to-service auth. Integrate storage/streams: S3 (large object handling, lifecycle), batching, compression. Contribute to real-time comms integrations (Matrix/Jitsi) and E2EE-aware flows. Ship with CI/CD , containerize with Docker , and collaborate on Kubernetes/EKS deployments. Add observability by default (logs, metrics, traces); write tests (unit/integration). Must-have 5+ years building production applications and services in Python . Strong SQL fundamentals (query plans, indexes, isolation levels) and practical NoSQL use. Production FastAPI/Django, Pydantic/typing, async I/O. Auth at scale: OIDC/JWT , scopes/claims, session/token lifecycles. Architecture & design: DDD , Repository , DTO , SOLID ; microservices fundamentals. Comfortable owning features end-to-end (spec → code → tests → rollout → runbook). Soft Skills & Work Style Strong commitment to code quality and performance optimization . Self-motivated , able to work independently and manage priorities. Collaborative team player with clear written and verbal communication. Operates with minimal supervision ; asks for context early, unblocks proactively. Balances individual ownership with team collaboration and documentation. Nice-to-have Matrix (nio), Jitsi/WebRTC, and E2EE concepts (device lists, key backup/restore). Kafka/RabbitMQ; OpenTelemetry/Prometheus/Grafana. S3 large-object flows, lifecycle policies. Performance work: profiling, backpressure handling, hotspot reduction.

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