The English-language job board for Spain

Senior Applied Research Engineer

On-site in Barcelona·Full-time·Added 6 months ago

This job was published 6 months ago

Fundamental

12 open roles

Apply

Overview

Job details

Full-time hours
Per the ad.
A relocation package
Help with the move, per the ad.
Relocation help
Indicative — the ad doesn’t promise sponsorship.

Requirements

Work in English
English is required, per the ad.
Work on-site in Barcelona
A relocation package offered.
Have senior-level experience
Senior-level role.

Pay & benefits

What you'll get

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

Requirements

What we're looking for

Strong understanding of modern ML architectures and large-scale training pipelines
Experience running distributed training jobs on multi-GPU systems
Advanced profiling and debugging skills across CPU, GPU, memory usage, latency, and inter-GPU communication
Strong programming skills in Python
Experience with model scaling and parallelization strategies, including tensor and pipeline parallelism

Nice to have

Familiarity with NCCL, MPI, and distributed communication primitives
Knowledge of PyTorch and Triton internals
Programming experience with C++ and CUDA

The role

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.

What you'll do

Profile end-to-end distributed training runs to identify bottlenecks across compute, GPU memory, and inter-GPU communication
Contribute to architectural decisions that improve the efficiency and reliability of large-scale training jobs, including developing Triton/CUDA kernels when needed
Design and implement model scaling, parallelization, and memory optimization techniques for training workloads with very large context sizes
Collaborate closely with ML Researchers to diagnose architectural inefficiencies, ensure new research ideas scale efficiently in practice, and spread internal knowledge about model efficiency and optimization
Drive the productionization and serving of our models from the research side, including improving inference efficiency through techniques such as quantization

About Fundamental

Fundamental is a London-based AI research and engineering company that develops advanced machine learning systems and developer tools. The company focuses on applied AI, bridging cutting-edge research with production-grade engineering to build products that serve developers and enterprises. Its team is composed of researchers, ML engineers, and software engineers working on model serving, MLOps, and applied AI challenges.

Fundamental is expanding its engineering and research presence in Spain, with a dedicated hub that hosts roles across ML research, MLOps, backend, and full-stack development. The company offers a research-driven culture with a strong emphasis on technical excellence, making it an attractive destination for international engineers and researchers looking to work on challenging AI problems while based in Spain.

Employees: 11–50
Headquarters: London, UK

Good to know if you are moving

Fundamental is headquartered in London, UK, and is expanding its engineering hub in Spain, offering international professionals the chance to work on AI research and applied engineering from Spain.
The company's open roles in Spain span ML research, MLOps, backend, and full-stack engineering, indicating a strong focus on technical and research-oriented positions.
As a smaller, research-driven company, Fundamental likely offers a collaborative environment with direct impact on product decisions, appealing to engineers seeking meaningful contributions.
The Spain office appears to be a key part of the company's growth strategy, with multiple team lead roles (e.g., MLOps Team Lead, DevOps Team Lead) suggesting opportunities for career advancement.

All open roles at Fundamental