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Cryptography Engineer

Multiverse Computing

Multiverse Computing

Other Engineering
San Sebastián, Gipuzkoa, Spain
Posted on May 13, 2025
Technical · San Sebastian, Spain

Cryptography Engineer

Multiverse Computing

Multiverse is a well-funded and fast-growing deep-tech company founded in 2019. We are the biggest Quantum Software company in the EU. We are also one of the 100 most promising companies in AI in the world (according to CB Insights, 2023) with 150+ employees and growing, fully multicultural and international.

We provide hyper-efficient software to companies seeking to gain an edge with quantum computing and artificial intelligence. Our main products, Singularity and CompactifAI, address critical needs across various industries. Singularity remains a trusted solution for blue-chip companies in finance, energy, manufacturing, cybersecurity, and more. CompactifAI, on the other hand, is a groundbreaking compression tool for foundational models based on Tensor Networks. With CompactifAi, one can compress AI systems, such as large language models, to make them more efficient and portable
You will be working alongside world leading experts to build solutions that tackle real life issues. We look for passionate people that want to grow in an ethics driven environment, promoting sustainability and diversity. We aim to continue building our truly inclusive culture - come and join us.

As a Cryptograpghy Engineer, 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.

Required Qualifications

  • Master Degree in Mathematics, Computer Science, Physics, Engineering or related field.
  • Background in cryptography, including symmetric and public-key cryptography.
  • 2+ years of experience in industry related to cybersecurity/cryptography roles.
  • Knowledge of Python.
  • Ability to work with a diverse team of people, both in-person and through online resources.
  • Perfect command of the English language.

Preferred Qualifications

  • PhD in Mathematics, Computer Science, Physics, Engineering or related field, with focus on cryptography.
  • Experience with practical development and implementation of cryptographic solutions.
  • Knowledge of quantum algorithms, quantum key distribution. Post-quantum cryptography.
  • Experience using git, unit testing, and docker.

Perks & Benefits

  • Indefinite 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.
  • Flexible working hours.
  • 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.

Department
Technical
Locations
San Sebastian, Spain
Employment type
Full-time
Workplace type
Hybrid
Seniority level
Mid-Senior level

About MULTIVERSE COMPUTING

Come and join our multicultural team!

5 locations
+27 languages

Founded in 2019
Coworkers +150
Technical · San Sebastian, Spain

Cryptography Engineer

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