Senior Backend Developer (Python) - Project MindBridge

Remote
Praha
Full-time

About the Project

MindBridge is an AI-powered platform for high-profile international conferences. We build real-time networking, content streaming, and AI-driven engagement tools that serve thousands of delegates at live events.

The Role

We're hiring 3 Senior Backend Developers to work across our Python microservices: the core API, a graph-based RAG service, and a real-time transcription pipeline. You'll be building the layer between our mobile apps and our AI backend, shipping features that go live at major global conferences.

What You'll Work On

Design and build REST APIs with FastAPI (async, high-throughput)
Develop and optimize Neo4j graph database queries and schemas
Build document ingestion pipelines and RAG retrieval systems
Integrate LLMs (OpenAI, Anthropic, Google) via LangChain for real-time AI features
Implement real-time audio processing and transcription workflows
Manage async task queues with Celery and Redis pub/sub
Work with clean architecture patterns (domain-driven design, dependency injection)

Must Have

5+ years of backend Python development
Strong experience with FastAPI or similar async frameworks
Solid understanding of REST API design and microservices architecture
Experience integrating with mobile app backends (iOS/Android)
Comfortable with Redis, message queues, and async task processing
PostgreSQL or graph database experience
Familiarity with AWS services (S3, SQS)
Clean code habits: testing, typing, Pydantic, CI/CD

Big Plus

Neo4j or graph database expertise
MLOps experience (model deployment, evaluation pipelines, monitoring)
Experience with RAG systems, embeddings, or vector search
Real-time audio/video processing
LangChain or LLM orchestration frameworks

Setup

Full-time contractor
Fully remote (GMT +/- 4 hours)
Working with a small, senior team (tech lead, frontend devs, designer)