Join SIX Financial Information's AI Engineering team as a Senior AI Backend Engineer of our Productization squad. You will own the backend, APIs, and integrations that turn AI prototypes into production-grade products in our GenAI and Data Mining lines.
This is a high-leverage, player-coach role at the heart of how we scale AI delivery. You will set the technical direction for production-grade engineering, partner with data scientists and AI engineers on serving and integration patterns, and free the AI Solutions team to focus on models and evals while your squad owns reliable delivery to end users.
What You Will Do
- Productize AI & GenAI Solutions: Build the backends, agent/RAG infrastructure, MCP servers, and LLM-serving layers that turn models, prompts, and pipelines into reliable, observable production products.
- Design & Build Production APIs: Architect and maintain endpoints and GraphQL APIs, defining schema, resolver, and authentication patterns that serve frontend applications, internal services, and AI features.
- Integrate Data & AI Pipelines: Develop ingestion, parsing,



OCR, and vendor-LLM integrations (OpenAI, Gemini, Anthropic) with strong attention to concurrency, async processing, retries, idempotency, and state-machine workflows.
- Operate in Production: Partner with MLOps on Docker, Terraform, and Azure DevOps CI/CD; establish performance baselines and observability for both APIs and AI workloads; optimize for latency, throughput, and cost.
- Champion Quality & Coach Peers: Apply clean architecture and proven design patterns, enforce standards through tests and reviews, and coach junior engineers and rotating contributors.

What You Bring
- Backend Expertise: Deep proficiency in Python and hands-on experience designing and scaling modern APIs (e.g. FastAPI) in production, including async/await for I/O-bound workloads. Production experience with GraphQL (Strawberry or comparable) is a strong plus.
- AI Productization Experience: Hands-on experience

📌 Senior AI Backend Engineer (España)
🏢 BME | Bolsas y Mercados Españoles
📍 España