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Senior Machine Learning Engineer (LLM)

Hybrid in Zaragoza·Added 2 days ago (last checked 21 Oct)

Overview

Work mode
Hybrid, Zaragoza
Relocation
A relocation package
English
Required
Experience
5+ years
Education
University degree
Benefits
Private health insurance

Visa options

  • Multiverse Computing sponsors work visas

    Stated in the ad: “We offer work visa sponsorship (If applicable).”

More jobs with visa sponsorship

Skills

Nice to have

Requirements

What we're looking for

Required minimum Qualifications

  • Bachelor's, Master's or Ph.D. in Artificial Intelligence, Computer Science, Data Science, or related fields.

  • 5+ years of hands-on experience with designing, training or fine-tuning deep learning models, preferably working with transformer or computer vision models.

  • 5+ year of hands-on experience using transformer models, with excellent command of libraries such as HuggingFace Transformers, Accelerate, Datasets, etc."

  • Solid mathematical foundations and theoretical understanding of deep learning algorithms and neural networks, both training and inference.

  • Excellent problem-solving, debugging, performance analysis, test design, and documentation skills.

  • Strong understanding with the fundamentals of GPU architectures and and LLM hardware/ software infrastructures.

  • Excellent programming skills in Python and experience with relevant libraries (PyTorch, HuggingFace, etc.).

  • Experience with cloud platforms (ideally AWS), containerization technologies (Docker) and with deploying AI solutions in a cloud environment

  • Excellent written and verbal communication skills, with the ability to work collaboratively in a fast-paced team environment and communicate complex ideas effectively.

  • Fluent in English

Nice to have

  • Previous research publications in deep learning or any tech field is a plus

  • Experience running large-scale workloads in high-performance computing (HPC) clusters.

  • Experience in handling large datasets and ensuring data quality.

  • Experience with inference and deployment environments (TensorRT, vLLM, etc.).

  • Experience in accuracy evaluation of LLMs (OpenLLM Leaderboard).

  • Experience building and evaluating RAG systems.

  • Experience in building non-LLM deep learning applications, e.g., computer vision, audio or signal processing.

  • Familiarity with AI ethics and responsible AI practices.

  • Experience in DevOps/MLOps practices in deep learning product development.

Pay & benefits

What you'll get

  • 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.

  • 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

The role

  • 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.

Job Overview
We are seeking a skilled and experienced Machine Learning Engineer with a strong background in Large Language Models to join our team. In this role you will have the opportunity to leverage cutting-edge quantum and AI technologies to lead the design, implementation, and improvement of our language models, as well as working closely with cross-functional teams to integrate these models into our products. You will have the opportunity to work on challenging projects, contribute to cutting-edge research, and shape the future of LLM and NLP technologies.

What you'll do

  • Design and develop new techniques to compress Large Language Models based on quantum-inspired technologies to solve challenging use cases in various domains.

  • Conduct rigorous evaluations and benchmarks of model performance, identifying areas for improvement, and fine-tuning and optimising LLMs for enhanced accuracy, robustness, and efficiency.

  • Build LLM based applications such as RAG and AI agents.

  • Use your expertise to assess the strengths and weaknesses of models, propose enhancements, and develop novel solutions to improve performance and efficiency.

  • Act as a domain expert in the field of LLMs, understanding domain-specific problems and identifying opportunities for quantum AI-driven innovation.

  • Design, train and deliver custom deep learning models for our clients

  • Work in diverse areas beyond LLM, e.g., computer vision.

  • Maintain comprehensive documentation of LLM development processes, experiments, and results.

  • Share your knowledge and expertise with the team to foster a culture of continuous learning, guiding junior members of the team in their technical growth and helping them develop their skills in LLM development.

  • Participate in code reviews and provide constructive feedback to team members.

  • Stay up to date with the latest advancements and emerging trends in LLMs and recommend new tools and technologies as appropriate.

About Multiverse Computing

Multiverse Computing is a quantum computing company that develops quantum and quantum-inspired software solutions for industries such as finance, energy, manufacturing, and logistics. Founded in 2019 and headquartered in San Sebastian, Spain, the company has grown to over 100 employees and has expanded its operations internationally, with offices in Paris, Munich, Toronto, and other locations. Their flagship product, Singular, is a quantum computing platform designed to help businesses solve complex optimization and machine learning problems without requiring deep quantum expertise.

In Spain, Multiverse Computing maintains its headquarters in San Sebastian and has a strong presence in the Basque Country's technology ecosystem. The company is known for its research-driven culture and collaboration with academic institutions, making it an attractive destination for international professionals interested in cutting-edge quantum technology. They offer a dynamic, multidisciplinary environment where engineers, physicists, and business professionals work together, and they are actively hiring for roles in engineering, AI/ML, finance, and communications, providing opportunities for international talent to contribute to the growing quantum computing sector in Spain.

Industry
Quantum Computing
Founded
2019
Employees
100–500
Headquarters
San Sebastian, Spain
In Spain
San Sebastian

Good to know if you are moving

  • Multiverse Computing is headquartered in San Sebastian, Spain, a city known for its high quality of life and strong tech ecosystem, making it an attractive location for international professionals.
  • The company has a diverse, international team and works in English, which is beneficial for non-Spanish speakers.
  • They offer roles in cutting-edge fields like quantum computing and AI/ML, providing opportunities for career growth in emerging technologies.
  • The company has offices in multiple countries, including the US, Germany, and Canada, which may offer opportunities for international mobility.
  • San Sebastian is a coastal city with a high standard of living, but the cost of living is relatively high compared to other Spanish cities.

In their own words

About the company & team

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:

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.

Additional information

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.

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