Senior Backend Engineer

We are toogeza, a Ukrainian recruiting company that is focused on hiring talents and building teams for tech startups worldwide. People make a difference in the big game, we may help to find the right ones.

Currently, we are looking for Senior Backend Engineer for Elva.

• Python 3.12, FastAPI, Pydantic, SQLAlchemy 2.0 (async, asyncpg), Alembic

• PostgreSQL (Cloud SQL)

• Google Cloud: GKE (Kubernetes + Helm), Cloud Storage, BigQuery, Secret Manager

• Ory Oathkeeper (API gateway), Centrifugo (real-time), n8n (worker orchestration), KEDA (autoscaling)

• Docker, GitHub Actions, Artifact Registry

• pytest (asyncio) + Testcontainers

• structlog, Google Cloud Monitoring / Logging

• 5+ years of professional Python development, a solid share of it on an async stack (FastAPI / aiohttp / Starlette); deep understanding of asyncio.

• Strong PostgreSQL: schema design, transactions and locking, indexes, slow query analysis.

• Experience designing REST APIs and webhook integrations: idempotency, retries, consistent error handling.

• Hands-on performance work: profiling, metrics, load testing, and fixing the bottlenecks you find.

• Docker as a daily tool; Kubernetes at the "I deploy and debug my own service" level (each service ships its own Helm chart).

• A habit of writing tests (unit + integration) and taking features to production end-to-end: from design to monitoring.

• GCP experience (or AWS/Azure with willingness to switch to GCP), Terraform.

• Mobile app billing: RevenueCat, Paddle, App Store / Google Play subscriptions.

• Auth systems: JWT, refresh token rotation, API gateways.

• Real-time messaging (WebSocket), workflow orchestration (n8n, Airflow, Temporal, Celery).

• BigQuery and analytics pipelines.

• Backend experience in mobile products.

What’s next?
If this role sounds like a fit — we’d love to hear from you! Just send over your CV and anything else you’d like us to consider.

We’ll review everything within five working days, and if your background matches what we’re looking for, we’ll get in touch to set up a call and get to know each other better.