Multiverse ComputingMultiverse is a well-funded, fast-growing deep-tech company founded in 2019. We are the largest quantum software company in the EU and have been recognized by CB Insights (2023 and 2025) as one of the 100 most promising AI companies in the world.With 180+ employees and growing, our team is fully multicultural and international. We deliver hyper-efficient software for companies seeking a competitive edge through quantum computing and artificial intelligence.Our flagship products, Compactif AI and Singularity, address critical needs across various industries:Compactif AI is a groundbreaking compression tool for foundational AI models based on Tensor Networks. It enables the compression of large AI systems—such as language models—to make them significantly more efficient and portable.Singularity is a quantum- and quantum-inspired optimization platform used by blue-chip companies to solve complex problems in finance, energy, manufacturing, and beyond. It integrates seamlessly with existing systems and delivers immediate performance gains on classical and quantum hardware.You’ll be working alongside world-leading experts to develop solutions that tackle real-world challenges. We’re looking for passionate individuals eager to grow in an ethics-driven environment that values sustainability and diversity.We’re committed to building a truly inclusive culture—come and join us.ResponsibilitiesOwn the end-to-end design and delivery of data platform architectures — lakehouse, data catalog, and governance — from initial scoping through production releaseDesign, implement, and operate large-scale ETL/ELT pipelines and workflow orchestration to ensure data is clean, accurate, versioned, and accessibleDefine data modeling, partitioning, schema evolution, and versioning conventions so datasets remain queryable, interoperable,



and reproducible at scaleEstablish and maintain authoritative data catalogs, including schemas, metadata, lineage, sensitivity labels, and access policiesValidate released datasets against their sources for completeness, correctness, schema consistency, and query performance, defining objective acceptance criteriaWork closely with Machine Learning and AI Engineers to make data products directly consumable by analytics, APIs, and AI/agent workflowsCollaborate with clients and cross-functional teams to scope requirements, lead technical sessions, and document architectures for knowledge transfer and internal ownershipMentor and support other data engineers, reviewing designs and code and raising the team's engineering standardsStay up to date with emerging trends in data engineering — open table formats, data catalogs, orchestration — and drive their adoption where they add valueRequired qualifications:Bachelors or master's degree in computer science, software engineering, or a related field5+ years of professional experience in data engineering, including ownership of production data platforms or pipelinesExpert programming skills in Python and strong command of SQLExpertise in data modeling, ETL development, and database management, with both SQL and No SQL databasesHands-on experience with lakehouse architectures and columnar / open table formats (e.G., Parquet, Apache Iceberg,



Delta Lake)Experience with distributed data processing frameworks such as Spark, and with workflow orchestrators such as Airflow or Argo WorkflowsStrong experience with cloud data platforms (Azure, AWS, or GCP), including object storage, containers, and KubernetesSolid grounding in data governance: catalogs, metadata, lineage, access control, and dataset versioningComfortable with Git-based workflows, CI/CD, and infrastructure-as-code working modelsExcellent problem-solving, communication, and collaboration skills;
able to lead technical discussions with clients and stakeholders in EnglishNice to have:Experience with scientific or geospatial data formats and tooling (e.G., Zarr, Net CDF, GRIB2, xarray, H3 spatial indexing)Experience preparing and serving data for LLM, RAG, or agent-based applicationsPrevious experience in consulting or client-facing delivery teamsPerks & BenefitsIndefinite contract.Equal pay guaranteed.Variable performance bonus.Signing bonus.We offer work visa sponsorship (If applicable).Relocation package (if applicable).Private health insurance.Flexible remuneration: hospitality and public transportation.Eligibility for educational budget according to internal policy.Hybrid opportunity.Adaptable working hours.Language classes and discounted lunch optionsWorking in a high paced environment, working on cutting edge technologies.Career plan. Opportunity to learn and teach.Progressive Company. Happy people cultureAs an equal opportunity employer, Multiverse Computing is committed to building an inclusive workplace. The company welcomes people from all different backgrounds, including age, citizenship, ethnic and racial origins, gender identities, individuals with disabilities, marital status, religions and ideologies, and sexual orientations to apply.

📌 Senior Data Engineer (San Sebastián)
🏢 Quantumsoftware
📍 San Sebastián