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MCMultiverse Computing
Multiverse ComputingDeep Tech

Machine Learning Engineer (LLM)

Location

Madrid, Spain

Work type

Hybrid

Employment

Full Time

Experience

2+ years

Compensation

Compensation not disclosed

Posted

1h ago

Summary and responsibilities

Role overview

Summary

We are seeking a skilled Machine Learning Engineer with expertise in Large Language Models to design, implement, and optimize LLMs using cutting-edge quantum and AI technologies. This role involves building LLM-based applications, conducting performance evaluations, and collaborating with cross-functional teams to integrate models into products.

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.

As a Machine Learning Engineer, you will

  • 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.

Required minimum Qualifications:

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

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

  • 2+ 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.

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

Preferred Qualifications:

  • Spanish Language skills

  • 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.

Perks and 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.

  • 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

Updated 1h ago

Candidate fit

Skills and qualifications

Additional skills

Large Language Models (LLM) • 1+ yrs
Deep Learning • 1+ yrs
Transformer Models • 1+ yrs
Python • 1+ yrs
PyTorch • 1+ yrs
HuggingFace Transformers • 1+ yrs
AWS • 1+ yrs
Docker • 1+ yrs

Experience

2+ years

How this role is positioned

Role classification

Job domains

Software Engineering

Industries

Finance & Banking

Employment

Full Time

Contract duration

Permanent

Hiring type

Direct

Global hiring

Location specific

Offer details

Compensation and benefits

Compensation

Compensation not disclosed

VisibilityShared on listing
CurrencyUSD
PeriodYearly

Benefits and perks

Performance Bonus
Signing Bonus
Visa Sponsorship
Health Insurance
Flexible Working Hours

Location, schedule, and role shape

Work setup

Work conditions

Primary locationMadrid, Spain
Work typeHybrid
Global hiringNo

Bandwidth profile

peopleMedium7/10
physicalLow1/10
cognitiveHigh9/10
executionHigh8/10
creativityHigh9/10
uncertaintyHigh8/10
communicationHigh8/10

Context on the employer

Company snapshot

Company

Multiverse Computing

Team size

Growing team

Location

Madrid, Spain

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.

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Machine Learning Engineer (LLM)

Madrid, SpainFull Time