Full Stack Engineer (Python)
Location: Madrid, Spain (ES)
Description
ThetaRay provides AI-driven anti-financial crime technology used by global banks and fintechs to detect money laundering and financial crime.
Our Madrid office is a key R&D hub with 50+ team members across engineering, data, and customer delivery, working closely with strategic customers across the region.
As a Full Stack Engineer, you will build scalable data platforms and backend services that power ThetaRay’s financial crime detection and analytics systems.
Technology: Python, Spark, Pandas, Airflow, microservices, distributed databases, Docker, Kubernetes, React / Angular, GenAI Orchestration (building agents), RAG, MCP.
What you’ll work on:
- Building large-scale data pipelines and backend services using Python
- Developing distributed data processing systems that analyze large financial datasets.
- Designing microservices architectures including AI Agent architectures that use tool-calling to automate investigative workflows.
- Contributing to modern web applications and UI components using React, Next.js, or Angular
- Contributing to scalable distributed architectures and event-driven systems, utilizing standard protocols (like MCP) to connect agents with enterprise data.
- Working with distributed databases and scalable storage systems.
Requirements
- Strong experience developing data platforms or backend systems using Python.
- Experience building data pipelines or working with large-scale data processing frameworks (e.g., Spark, Pandas).
- Experience designing microservices architectures, including agentic design patterns (e.g., ReAct).
- Experience working with distributed databases (e.g., Elasticsearch, MongoDB, Redis).
- Experience working with containerized environments such as Docker and Kubernetes.
- Experience contributing to frontend applications using React, Next.js, or Angular.
- Experience leveraging AI-assisted development tools (GitHub Copilot) and prompt engineering to accelerate the SDLC.
- Familiarity with prompt engineering for developer tooling, writing effective instructions/context to guide AI code suggestions.
- Fluent Spanish and strong English communication skills (written and spoken).
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