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Senior AI Backend Engineer

SIX Group AG
Madrid, Madrid provincia

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Detalles del empleo

Cualificaciones

CI/CD
Azure
Derecho
Informática
DevOps
Git
Google Cloud Platform
Máster
Docker
PostgreSQL
Terraform
Scrum
APIs
Cloud
GraphQL
Inteligencia artificial
GitLab
Python

Descripción completa del empleo

SIX drives the transformation of financial markets.

What sets us apart drives us ahead: between local roots and global relevance, we are a unique blend of tradition and future, of foundation and growth. We value bright minds and inspire them to grow with their ideas. Come and shape the future of finance with us.

Senior AI Backend Engineer

Madrid, Warsaw | Working from home up to 40% | Reference 7655

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 integrating LLMs and AI APIs (OpenAI, Gemini, Anthropic) into production systems, with familiarity in RAG, agent frameworks, vector databases, MCP, or ML serving patterns.
Data & Persistence: Strong production experience with PostgreSQL, SQLModel/SQLAlchemy, and Alembic, including schema design, indexing, and efficient queries.
Cloud & DevOps: Solid working experience with Google Cloud Platform and/or Azure, Terraform, Docker, Git workflows, and CI/CD pipelines (Gitlab or equivalent).
Quality & Collaboration: Strong testing discipline with pytest, a habit of writing maintainable, well-typed code, and the communication skills to mentor peers and partner closely with data scientists and AI engineers.
Experience & Education: 5+ years in Backend Development, Software Engineering, or Systems Architecture, including significant experience designing and operating production systems. A relevant degree in Computer Science or related field is required. English fluency is required.

If you have any questions, check out our FAQ page or call Yuliya Stoyko at +34 917095993.

For this vacancy we only accept direct applications.

Diversity is important to us. Therefore, we are looking to receiving applications regardless of any personal background.

What We Offer

Flexible Work Models
We trust our employees and offer a work environment that is well-balanced, productive and fosters success.

Personal Development
You will benefit from a culture of continuous learning and feedback. Your personal growth is supported through an extensive learning offering.

Agile Working Methods
Whether through scrum or design thinking,
we solve exciting tasks together in teams.

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