Why Keyrus, Why NowKeyrus is an international group of 2,800 consultants and experts across 28 countries, built on a single conviction:AI does not transform businesses. Architected intelligence does.
For more than 30 years, we have been building the data foundations that make intelligent systems work — designing the Operating System of the intelligent enterprise, where intelligence is embedded into the core of business processes to create sustainable value:we operationalise intelligence.
AI does not replace humans. It repositions us to a place no system can follow:understanding, deciding, designing, and creating.
At Keyrus, you will not just develop skills — you will develop judgment. Your expertise sharpens with every system you architect, every client challenge you solve, and every deployment that compounds on the last.
Over time, you grow into one of the rarest professionals of the intelligence era: someone who bridges data, AI, and human decision‑making at scale, across industries and geographies. This is not a role you fill. It is a discipline you master and a story you help write to become aKeyrus Architect of Intelligence.
Technology amplifies. Keyrus culture differentiates. Industrial discipline connects the two.
Role DetailsJob

location:
Madrid, Spain (Hybrid model when needed)Contract type: EmployeeTarget start date: January 2027Working hours: Full-timeCompensation: €40k–€54k per yearLanguages: Spanish and EnglishWhat You’ll ArchitectAs aData Engineer – AI & Data Platforms, you will help organisations transform complexity into measurable outcomes by combining technology, data, intelligence, and human decision‑making.
This role is bothtechnicalandconsultative— perfect for someone who can combine hands‑on data engineering, solution design, and close collaboration with client and delivery teams.



We’re looking for professionals who think like architects and act like builders.
This is fundamentally a Data Engineering role, with an added focus on preparing enterprise data for modern AI. Intelligent systems are only as dependable as the data beneath them: you will turn structured and unstructured source data intotrusted, reusable data productsthat serveanalytics and applicationsas well asRAG ,retrieval ,evaluationandagent‑enabled systems.
Design, build, test and operate production data pipelines and data products, moving data reliably from enterprise source systems into reusable consumption layers.
Develop and maintain data models and transformation logicthat preserve clear definitions and business context across analytical, operational and AI workloads.
Implement data quality, lineage, metadata and observability controls, so critical data is trustworthy, understandable and monitored in production.
Prepare structured and unstructured data for intelligent systems, including retrieval, grounding, RAG indexes, semantic context and evaluation datasets.
Engineer reliable ingestion and processing patternsacross APIs, databases, files, documents, events and other enterprise sources.
Operate and improve data workloads in a major cloud data ecosystem, balancing reliability, scalability, security, performance and cost.
Collaborate with AI Engineers and Software Engineers on stable data interfaces, without taking ownership of model behaviour,



agents or the surrounding application.
Document and reuse what works, including data contracts, transformations, controls, dependencies and operational knowledge that strengthen future Keyrus engagements.
Who You AreYou are ahands‑on Data Engineerwho knows that moving data is not enough: it must remain trusted, understandable and usable once a system is in production.
You thinkfrom source to consumptionand canturn fragmented enterprise data into reliable data products.
You understand thatanalytics ,applications ,RAG systems ,evaluationsandagentsconsume data differently, and you design the foundation accordingly.
You combinestrong engineering fundamentals with practical judgement.
You take ownership of what you build and follow it through to production.
You collaborate easily with AI, software, analytics, architecture and governance teamsin international environments.
What You BringQualifications & ExperienceDegree in Computer Science, Engineering, Information Systems or a related field, or equivalent professional experience.
Strong hands‑on experience designing, building and operating production data pipelines and data products.
Deep practical expertise in at leastone major cloud data ecosystem, with the ability to apply the same principles across comparable technologies.
Experience working withAI, software, analytics, architecture or governance teamsthat consume or define requirements for your data products.
Availabilityfor monthly travel to Madrid or Lisbon .
Professional fluency in Spanish and English, written and spoken.
Technical & Professional SkillsStrongSQLanddata-modelling fundamentals, with the ability to design clear, maintainable transformation and consumption layers.
Production engineering ca

📌 Data Engineer – Ai (Madrid)
🏢 Keyrus Group
📍 Madrid