Senior Backend Engineer

The role

You will build and scale core AI infrastructure for an AI-driven video production platform. You will work on LLM-powered workflows, multi-agent systems, integrations, and backend services.

What you will do

• Build and scale the core AI infrastructure
• Work on LLM-powered workflows and multi-agent systems
• Develop integrations and backend services
• Design how agents interact
• Improve system reliability and performance
• Experiment with new AI capabilities
• Work closely with the product team
• Influence technical architecture and user experience

Required qualifications

• 5+ years of professional Python development
• Solid share of Python development 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 bottlenecks
• Docker as a daily tool
• Kubernetes at the level of deploying and debugging own services using Helm charts
• Habit of writing unit and integration tests
• Taking features to production end-to-end from design to monitoring

Nice to have

• 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

Before you apply

• Send your CV and anything else you would like to be considered
• Review process takes five working days

About the company

toogeza is a Ukrainian recruiting company focused on hiring talents and building teams for tech startups worldwide.