AI Backend Engineer - Production AI & LLM Integrations

ITS Poland; Warszawa; Hybrid; PLN 180,000 - 340,000; Full time

Job summary

ITS Poland is looking for a backend engineer to contribute to reliable production AI systems using Python 3.12+, FastAPI, asyncio, WebSocket and REST APIs. Experience with gRPC is a plus. The role spans LLM integrations across AWS Bedrock, Claude/OpenAI, Gemini/Vertex AI and streaming APIs.

The focus is on tooling, RAG, prompt engineering, context enrichment, and external API integrations, with strong emphasis on scalable infrastructure, testing, and deployment in Docker/Kubernetes environments.

Qualifications

• Backend: Python 3.12+, FastAPI, asyncio, WebSocket, and REST APIs. gRPC is a plus.

Skills

Backend development

LLM integrations

AI tooling

ML/LLM fundamentals

Quality and infrastructure

Real-time audio streaming

Tools

Docker

CI/CD

AWS

Kubernetes/Helm

gRPC

REST APIs

WebSocket

AWS Bedrock

Anthropic Claude API

OpenAI API

Google Gemini API

Vertex AI

Job description

ITS Poland is looking for a backend engineer to contribute to reliable production AI systems using Python 3.12+, FastAPI, asyncio, WebSocket and REST APIs. Experience with gRPC is a plus. The role spans LLM integrations across AWS Bedrock, Claude/OpenAI, Gemini/Vertex AI and streaming APIs.

The focus is on tooling, RAG, prompt engineering, context enrichment, and external API integrations, with strong emphasis on scalable infrastructure, testing, and deployment in Docker/Kubernetes environments.