Quantum Software Engineer (Fixed-term contract)
We are looking to fill this role immediately and are reviewing applications daily. Expect a fast, transparent process with quick feedback.
Why join us?
We are a European deep-tech leader in quantum and AI, backed by major global strategic investors and strong EU support. Our groundbreaking technology is already transforming how AI is deployed worldwide — compressing large language models by up to 95% without losing accuracy and cutting inference costs by 50–80%.
Joining us means working on cutting-edge solutions that make AI faster, greener, and more accessible — and being part of a company often described as a “quantum-AI unicorn in the making.”
We offer
- Competitive annual salary starting from €45,000, based on experience and qualifications.
- Two unique bonuses: signing bonus at incorporation and retention bonus at contract completion.
- Relocation package (if applicable).
- Fixed-term contract ending in June 2026.
- Hybrid role and flexible working hours.
- Be part of a fast-scaling Series B company at the forefront of deep tech.
- Equal pay guaranteed.
- International exposure in a multicultural, cutting-edge environment.
As a Quantum Computing Engineer (Fixed term), you will
- Join a world-class team of Quantum experts with an extensive track record in both academia and industry.
- Work with Fortune-500 customers from government and private sectors.
- Collaborate with the founding team in a fast paced startup environment.
- Contribute to designing and improving Multiverse’s codebase.
- Design and implement new quantum algorithms.
Required Qualifications
- 2+ years experience in similar positions.
- Masters degree in Quantum Physics, Quantum Engineering, or related field.
- Knowledge of quantum computing algorithms, particularly hybrid and gate-based techniques.
- Advanced knowledge of Python and related scientific computing tools.
- Experience with quantum computing SDKs (Qiskit, Pennylane, or others).
- Ability to work with a diverse team of people, both in-person and through online resources.
- Perfect command of English language.
Preferred Qualifications
- PhD in Quantum Physics, Computer Science, or related field.
- Knowledge of Machine Learning or Optimization algorithms
- Experience using git, unit testing, and docker.
- Experience writing patent applications and/or grant proposal
About Multiverse Computing
Founded in 2019, we are a well-funded, fast-growing deep-tech company with a team of 180+ employees worldwide. Recognized by CB Insights (2023 & 2025) as one of the Top 100 most promising AI companies globally, we are also the largest quantum software company in the EU.
Our flagship products address critical industry needs:
- CompactifAI → a groundbreaking compression tool for foundational AI models, reducing their size by up to 95% while maintaining accuracy, enabling portability across devices from cloud to mobile and beyond.
- Singularity → a quantum and quantum-inspired optimization platform used by blue-chip companies in finance, energy, and manufacturing to solve complex challenges with immediate performance gains.
You’ll be working alongside world-leading experts in quantum computing and AI, developing solutions that deliver real-world impact for global clients. We are committed to an inclusive, ethics-driven culture that values sustainability, diversity, and collaboration — a place where passionate people can grow and thrive. Come and join us!
- Department
- Technical
- Role
- Quantum Software Engineer
- Locations
- Madrid, Barcelona
- Employment type
- Full-time
- Workplace type
- Hybrid
- Seniority level
- Associate
About MULTIVERSE COMPUTING
Come and join our multicultural team!
5 locations
+27 languages
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