Jobs in Donostia, Spain

Multiverse Computing

Multiverse 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, CompactifAI and Singularity, address critical needs across various industries:

• CompactifAI 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.

• Lead an international team of engineers to develop cutting‑edge solutions to the hardest industry problems for our top‑tier clients.
• Lead the technical direction of complex projects, designing a technical solution to the problem and ensuring the quality of the approach and technology used.
• Manage technical projects from initiation to completion, defining the project scope, objectives, and deliverables. To achieve this, you will:
  • Develop comprehensive project plans, including timelines, resource allocation, and risk assessments.
  • Identify and manage project risks, developing contingency plans to address unforeseen obstacles and maintain project momentum.
  • Lead and motivate a diverse team of professionals, providing guidance and direction to ensure project goals are met efficiently and effectively, fostering a collaborative and results‑driven team environment.
  • Monitor project performance and take proactive measures to ensure the delivery of high‑quality solutions.
  • Develop documentation, monitor and report project status, assess the effectiveness and accuracy of documentation.
  • Foster clear and transparent communication channels with stakeholders, team members, and senior management to provide updates on project status, milestones, and potential challenges.
  • Collaborate and communicate with other project managers and leaders to coordinate cross‑project initiatives and activities.
  • Demonstrate an understanding of customers’ tactical goals and effectively participate in the development and implementation of business solutions.
  • Contribute to the tech strategy providing clients and technology insights.

• Bachelor’s degree with 6+ years of industrial experience or Master’s degree with 5+ years or Ph.D. with 4+ years of relevant experience in software engineering, data science, IT and/or other relevant engineering domains.
• 1 year of successful project management experience in leading and managing engineering teams in a technology‑driven company.
• At least 3 years of hands‑on experience with deep learning techniques (e.g., computer vision) in a professional, non‑academic setting.
• Proven experience deploying ML/AI models in cloud‑based production environments.
• Experience with LLMs and Generative AI techniques such as fine tuning, pruning, model compression, RAG systems, transfer learning etc.
• Excellent command of Python, Docker and Git.
• Experience with GitHub/Gitlab workflows and functionalities.
• Solid understanding of agile development methodologies and best practices.
• Excellent leadership skills with the ability to motivate and guide cross‑functional teams effectively.
• Exceptional communication and interpersonal abilities to foster collaboration and maintain strong client relationships.
• Solid organizational and time‑management skills, coupled with a keen eye for detail.
• Perfect command of English and Spanish.

• PhD in Computer Science, Engineering, Physics, Data Science, Operations Research, or related field.
• Experience with quantum computing and/or Tensor Networks libraries.

• Indefinite contract.
• Equal pay guaranteed.
• Variable performance bonus.
• Signing bonus.
• We offer work visa sponsorship (if applicable).
• Relocation package (if applicable).
• Private health insurance.
• Eligibility for educational budget according to internal policy.
• Hybrid opportunity.
• Flexible working hours.
• Flexible remuneration: hospitality and public transportation.
• Language classes and discounted lunch options.
• Working in a high paced environment, working on cutting edge technologies.
• Career plan. Opportunity to learn and teach.
• Progressive Company. Happy people culture.

As 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.

Let’s recruit together and find your next colleague.