Talent.com
Senior Machine Learning Engineer (Product) (Fixed-term contract)

Senior Machine Learning Engineer (Product) (Fixed-term contract)

MULTIVERSE COMPUTINGBarcelona, Catalunya, .ES
Hace 2 días
Tipo de contrato
  • Quick Apply
Descripción del trabajo

Come and join our multicultural team!

5 locations

  • 27 languages

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 60,000 euros per annum.
  • Two unique bonuses : signing bonus at incorporation and retention bonus at contract completion.
  • Relocation package (if applicable).
  • Up to 9-month contract, ending on 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 Senior LLM Engineer, you will

  • Design and implement strategies for creating, sourcing, and augmenting datasets tailored for LLM training and fine-tuning.
  • Develop scalable pipelines to collect, clean, filter, annotate, and validate large volumes of text data, ensuring quality, ethical compliance, etc.
  • Collaborate with ML engineers, researchers, and software engineers to achieve ambitious goals in the preparation of LLMs and complementary work (preparing datasets, model evaluation, model serving, etc.).
  • Develop and integrate new routines for modifying and enhancing LLMs, and extending their functionality.
  • Make effective use of distributed compute resources and clusters (GPU’s), identify opportunities for further optimization.
  • End-to-end preparation of compressed and specialized LLMs for use in production.
  • Keep up to date with research trends in LLM foundation models, dataset curation, LLM pretraining data, and benchmarking.
  • Contribute to building documentation, development standards, and a healthy shared code base.
  • Mentor other engineers and provide knowledge sharing of cutting-edge techniques.
  • Required Qualifications

  • Master’s, or Ph.D. in Computer Science, AI, Data Science, Physics, Math, or a related field. Or equivalent industry experience.
  • 4+ years of experience in data science, machine learning, or related roles, with demonstrated experience with NLP or LLMs.
  • In-depth knowledge of large foundational model architectures (language and multimodal models) and their lifecycle : training, fine-tuning, alignment, and evaluation.
  • Proficient in Python and data tooling ecosystems (Pandas, NumPy, Hugging Face Datasets & Transformers libraries).
  • Hands-on experience with text data collection from diverse sources : web scraping, APIs, proprietary corpora, etc.
  • Strong understanding of data quality metrics including bias detection, toxicity, and readability.
  • Experience working in large shared distributed computing environments, familiarity with relevant tools for hardware optimization (vLLM, TensorRT, NeMo, etc.).
  • Experience with version control (git), unit testing, and other fundamental aspects of software development.
  • Effective communication and interpersonal abilities.
  • Preferred Qualifications

  • Experience building or contributing to datasets used in LLM pretraining or supervised fine-tuning.
  • Experience building foundational LLMs from the ground up
  • Familiarity with alignment techniques (e.g., reinforcement learning, preference modeling, reward modeling).
  • Exposure to multilingual and low-resource language datasets.
  • Contributions to open-source datasets, tools, or publications in dataset-centric research.
  • Knowledge of ethical AI, data governance, privacy laws (e.g., GDPR), and responsible data use.
  • Familiarity with the software development lifecycle and agile methodologies
  • 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!

    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.

    Crear una alerta de empleo para esta búsqueda

    Machine Learning Engineer • Barcelona, Catalunya, .ES

    Ofertas relacionadas
    • Oferta promocionada
    Senior Machine Learning Engineer – LLMs & Agentic AI

    Senior Machine Learning Engineer – LLMs & Agentic AI

    Keysight TechnologiesBarcelona, Catalonia, SPAIN
    Keysight is on the forefront of technology innovation, delivering breakthroughs and trusted insights in electronic design, simulation, prototyping, test, manufacturing, and optimization.Our ~15,000...Mostrar másÚltima actualización: hace 17 días
    • Oferta promocionada
    Machine Learning Engineer

    Machine Learning Engineer

    European Tech RecruitBarcelona, Catalonia, SPAIN
    Machine Learning Engineer | AI Start-up | 9-Month fixed-term Contract.Join a European deep-tech leader in quantum and AI. A well-funded, fast-growing company backed by major global investors with it...Mostrar másÚltima actualización: hace más de 30 días
    • Oferta promocionada
    Senior Machine Learning Engineer for AI Product

    Senior Machine Learning Engineer for AI Product

    QontoBarcelona, Cataluña, España
    Creating the freedom for SMEs to succeed in business and beyond, by delivering Europe's leading finance workspace.We combine business‑class tools (seamless invoicing, spend management, and pre‑acco...Mostrar másÚltima actualización: hace 5 días
    • Oferta promocionada
    Machine Learning Engineer

    Machine Learning Engineer

    Prosper AIBarcelona, Catalonia, Spain
    Prosper AI specializes in AI Phone Agents for healthcare, providing human-like expertise while significantly reducing costs. Our AI Agents efficiently handle tasks for calling patients and payors su...Mostrar másÚltima actualización: hace más de 30 días
    • Oferta promocionada
    • Nueva oferta
    Machine Learning Senior Engineer

    Machine Learning Senior Engineer

    SmadexBarcelona, Cataluña, España
    Barcelona in 2011 and sold to American-based and stock-listed Entravision in 2018 (NYSE : : EVC).We are one of the top mobile ad-tech companies in the world and the largest Demand Side Platform (DSP) ...Mostrar másÚltima actualización: hace 5 horas
    • Oferta promocionada
    • Nueva oferta
    Senior ML Engineer - Production-Ready Models (Hybrid)

    Senior ML Engineer - Production-Ready Models (Hybrid)

    SmadexBarcelona, Cataluña, España
    A leading advertising technology company based in Barcelona is looking for a Machine Learning Senior Engineer.The role involves architectural decisions on algorithms, developing scalable ML solutio...Mostrar másÚltima actualización: hace 5 horas
    Machine Learning Engineer (Product) (Fixed-term contract)

    Machine Learning Engineer (Product) (Fixed-term contract)

    MULTIVERSE COMPUTINGBarcelona, Catalunya, .ES
    Quick Apply
    Come and join our multicultural team!.We are looking to fill this role.Expect a fast, transparent process with quick feedback. We are a European deep-tech leader in quantum and AI, backed by major g...Mostrar másÚltima actualización: hace 2 días
    • Oferta promocionada
    Machine Learning Engineer (Product)

    Machine Learning Engineer (Product)

    European Tech RecruitBarcelona, Catalonia, Spain
    Join the Future of AI : Machine Learning Engineer (Fixed Term Contract until the end of June 2026) Are you a driven Machine Learning Engineer ready to tackle the next generation of computing? We ...Mostrar másÚltima actualización: hace 18 días
    • Oferta promocionada
    Senior Machine Learning Engineer (LLM & GPU Architecture)

    Senior Machine Learning Engineer (LLM & GPU Architecture)

    European Tech RecruitBarcelona, Catalonia, SPAIN
    Senior Machine Learning Engineer (LLM & GPU Architecture).This is a great opportunity to work with one of the biggest growing tech start-ups based in Spain, they are well-funded and one of the ...Mostrar másÚltima actualización: hace más de 30 días
    • Oferta promocionada
    Senior Machine Learning Engineer

    Senior Machine Learning Engineer

    DeepRec.aiBarcelona, Catalonia, España
    Senior Machine Learning Engineer (Product) – Fixed-Term Contract.Madrid or Barcelona (Hybrid) Contract : .Senior Machine Learning Engineer. European deep-tech company at the cutting edge of.This is a ...Mostrar másÚltima actualización: hace 9 días
    • Oferta promocionada
    Senior Machine Learning Engineer

    Senior Machine Learning Engineer

    WhatJobsBarcelona, Kingdom Of Spain, España
    Title : Senior Machine Learning Engineer / Data ScientistType : Full-timeLocation : Valencia or BarcelonaAbout usAt Visium, we enable enterprise executives in defining their AI & Data strategy, execut...Mostrar másÚltima actualización: hace más de 30 días
    • Oferta promocionada
    Machine Learning Engineer - LLM / Fixed Term Contract

    Machine Learning Engineer - LLM / Fixed Term Contract

    European Tech RecruitBarcelona, Catalonia, Spain
    Machine Learning Engineer - LLM / Fixed Term Contract We are currently partnered with a world-leading quantum AI company developing cutting-edge solutions that make artificial intelligence faster,...Mostrar másÚltima actualización: hace más de 30 días
    • Oferta promocionada
    Quantum Machine Learning : Engineer

    Quantum Machine Learning : Engineer

    European Tech RecruitBarcelona, Provincia de Barcelona, España
    Senior Machine Learning Engineer (LLM & GPU Architecture) .This is a great opportunity to work with one of the biggest growing tech start-ups based in Spain, they are well-funded and one of the mos...Mostrar másÚltima actualización: hace más de 30 días
    Machine Learning Senior Engineer

    Machine Learning Senior Engineer

    Smadex SLUBarcelona, Cataluña, ES
    Quick Apply
    Smadex is a leading advertising technology company founded in Barcelona in 2011 and sold to American-based and stock-listed Entravision in 2018 (NYSE : : EVC). We are one of the top mobile ad-tech comp...Mostrar másÚltima actualización: hace 2 días
    • Oferta promocionada
    Lead Machine Learning Engineer

    Lead Machine Learning Engineer

    VisiumBarcelona, Kingdom Of Spain, España
    As a Lead Machine Learning Engineer, you will own the most technically complex and high-impact projects from conceptualization over architecture design to production deployment.Set direction for a ...Mostrar másÚltima actualización: hace más de 30 días
    • Oferta promocionada
    Machine Learning Engineer (Product)

    Machine Learning Engineer (Product)

    WhatJobsBarcelona, Kingdom Of Spain, España
    Join the Future of AI : Machine Learning Engineer (Fixed Term Contract until the end of June 2026)Are you a driven Machine Learning Engineer ready to tackle the next generation of computing?We are a...Mostrar másÚltima actualización: hace 14 días
    • Oferta promocionada
    Machine Learning Engineer

    Machine Learning Engineer

    SmadexBarcelona, Cataluña, España
    Smadex is a leading advertising technology company founded in Barcelona in 2011 and sold to American-based and stock-listed Entravision in 2018 (NYSE : : EVC). We are one of the top mobile ad-tech comp...Mostrar másÚltima actualización: hace más de 30 días
    • Oferta promocionada
    Senior AI / ML Engineer

    Senior AI / ML Engineer

    Welocalize, IncBarcelona, Cataluña, España
    AI ML R&R Engineer page is loaded## AI ML R&R Engineerlocations : Spaintime type : Full timeposted on : Posted Todaytime left to apply : End Date : October 31, 2025 (30+ days left to apply)job r...Mostrar másÚltima actualización: hace 4 días