SECTION I · THE BRIEF
Brief #07815Updated 23 AUG 2026BARCELONAAshbySOFTWARE COMPANIES
Employbl Company Profile

ML Researcher

Fundamental is an AI research company that focuses on overcoming the fundamental challenges of machine learning in large-scale tabular systems.

Location
Barcelona
Company size
50–100
Posted
1mo ago
Via
Ashby
Section II · Full ProfileFree with an account
  • 01Comp band & equity packageLocked
  • 02Seniority & experience requirementsLocked
  • 03Interview process & rubricLocked
  • 04Hiring manager & team contextLocked
  • 05Growth trajectory in this roleLocked
  • 06Offer & decision timelineLocked

Free account · no card · 2 minutes

ML Researcher

Fundamental· BarcelonaView company profile


Job title
ML Researcher
Job location
Barcelona
Job description

About Fundamental

Fundamental is an AI research lab pioneering the future of enterprise decision-making. Our flagship model, NEXUS is the world's most powerful Large Tabular Model (LTM) - purpose-built for the structured records that contain trillions of dollars in business value. With $275m in funding from leading investors and trusted by Fortune 100 companies, Fundamental is giving businesses the Power to Predict.

At Fundamental, you'll work on unprecedented technical challenges in foundation model development and build technology that transforms how the world's largest companies make decisions. This is your opportunity to be part of a category-defining company from the ground-up. Join the team defining the future of enterprise AI.

Key responsibilities

As part of the Research team, you will contribute to ideation, designing, implementing, and evaluating breakthrough Machine Learning models that will be deployed in the real world. Your work will be focused on the entire lifecycle of the models. Alongside the rest of the ML researchers in the team, you will be responsible for our models’ performance in every meaning of this word - whether this means achieving high evaluation scores through novel architectures and training methods, establishing the evaluation protocols themselves, or implementing methods that allow for efficient training and inference. The greatest research is done through solid engineering, so alongside the research you will also take part in ensuring that our research code allows swift, rapid development and testing of new ideas - both your own and the rest of the team’s.

Must have

  • Strong familiarity with the full research cycle in Machine Learning

  • Strong fundamentals of software engineering

  • Strong knowledge of Python, and its ML frameworks

  • Experience with:

    • Full lifecycle of AI model development

    • ML infrastructure frameworks and tools

    • Developing new ML methods, algorithms and models

    • GPUs (or TPUs) and distributed training

    • Scaling up models and training regimes

  • Knowledge of:

    • Classical ML methods and algorithms

    • Deep Learning techniques

Nice to have

  • Expertise within one of the following areas is a strong bonus: Architecture Research, Distillation (Model Compression), Evaluation, Code Generation, LLMs

  • Experience with foundational models, e.g. LLMs

  • Published research at AI conferences

  • Contributions to open source ML projects

  • Experience working with tabular data / predictive analytics

  • High Kaggle rank

  • BSc/MSc/PhD in computer science/machine learning

Benefits

  • Competitive compensation with salary and equity

  • Comprehensive health coverage for you and your dependents

  • Paid parental leave for all new parents, inclusive of adoptive and surrogate journeys

  • Relocation support for employees moving to join the team in one of our office locations

  • A mission-driven, low-ego culture that values diversity of thought, ownership, and bias toward action

View job listing ↗
The Saturday Briefing

Get the Saturday tech briefing

New company profiles, funding moves, and who’s hiring across the market — every Saturday morning.

Where this role is based

Barcelona

Loading map…

Fundamental headquarters

San Francisco, CA

Company size

50–100 employees

Founded

2024

Total raised

$255,000,000

View company profile ↗

Funding rounds