Python Developer

3 weeks ago

West Bengal India, India Voyantt Consultancy Services LLP Full time

Role DescriptionWe'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 doDesign 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-have5+ 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 StyleStrong 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-haveMatrix (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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