About the role
We’re looking for a Senior Backend Engineer to help build and scale the core of Shortifi — our URL shortening, UTM management, and click analytics platform. You’ll work across the entire backend stack: designing APIs, optimising database queries, and ensuring the redirect path handles traffic spikes without breaking a sweat.
What you’ll do
- Design and implement new API endpoints and domain services using FastAPI and Python 3.13
- Own the click-tracking pipeline: Redis Streams ingestion, consumer workers, and aggregation into PostgreSQL
- Improve query performance and data modelling for analytics dashboards serving millions of click events
- Write and maintain database migrations with Alembic and ensure zero-downtime deploys
- Collaborate with frontend engineers to shape API contracts and ensure type-safe integration via OpenAPI specs
- Participate in architecture decisions, code reviews, and incident response
What we’re looking for
- 5+ years of professional experience building production backend systems in Python
- Strong knowledge of async Python (asyncio, FastAPI or similar ASGI frameworks)
- Deep experience with PostgreSQL — query optimisation, indexing strategies, schema design
- Hands-on experience with Redis (caching, pub/sub, or Streams)
- Solid understanding of distributed systems patterns: idempotency, eventual consistency, backpressure
- Familiarity with SQLAlchemy 2 (async mode) or willingness to learn quickly
- Experience writing well-tested code — unit, integration, and end-to-end
- Comfortable working in a hexagonal / ports-and-adapters architecture
Nice to have
- Experience with ClickHouse or other columnar databases for analytics workloads
- Background in building multi-tenant SaaS platforms
- Familiarity with OpenTelemetry, structured logging, or observability tooling
- Contributions to open-source Python projects
What we offer
- A small, focused team where your work ships fast and matters
- Flexible remote work within EU time zones
- 28 days paid vacation
- Learning budget for conferences, courses, and books
- Modern hardware of your choice