Backend Engineer

We are looking for a Python Backend Engineer to work on a high-load video surveillance system. You will develop and optimize backend services and help ensure the system operates reliably in real time

Work format: on-site, Lviv

What you’ll work on

• REST API endpoints and background processing pipelines
• Database schema design, ORM queries, and migrations
• Authentication, authorization, and security hardening
• Integration with camera protocols (ONVIF/RTSP) and ML inference services
• Internal messaging between processes (ZeroMQ, MQTT)
• Observability: structured logging, metrics, and error tracking

Required

• Python 3.11+ — confident with async/await and asyncio primitives
• FastAPI — routing, dependency injection, middleware, background tasks
• SQLAlchemy 2.0 async — mapped columns, async sessions, relationship loading
• Pydantic v2 — models, validators, settings management
• PostgreSQL — query design, indexes, connection pooling
• Alembic — migration authoring and version management
• Docker — writing Dockerfiles and working with Docker Compose

Good to have

• pgvector or vector database experience
• ZeroMQ or other message-passing / IPC patterns
• MQTT, RTSP, or camera protocol familiarity
• structlog or structured logging in production
• pytest-asyncio and async testing patterns
• nginx configuration (reverse proxy, auth_request)
• Prometheus metrics instrumentation

What we offer

• The opportunity to work on a product that has a real impact on the country’s security
• Work on a technically challenging high-load product
• A team of strong engineers and support for your professional growth
• The opportunity to influence technical decisions and shape the product’s technical direction
• A comfortable office in Lviv
• Employee reservation from military mobilization
• Competitive compensation based on your level of expertise

Hiring process

1. Online interview with a recruiter
2. Technical interview with the Head of the relevant engineering direction
3. Internal security clearance
4. Offer

Work format: on-site in Lviv

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