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Applied AI Engineer

Join Fundamental as an Applied AI Engineer to tackle technical challenges in developing large neural network-based models.

Location
Europe
Compensation
Not disclosed
Level
mid
Type
full time

Posted by employer 5 months ago

First seen on Joblaze 1 month ago

Last verified on the company career page 1 day ago

Apply at Fundamental → Save job Scanned from fundamental.tech

Skills & Technologies

AI in the day-to-day

Fundamental develops NEXUS, a powerful Large Tabular Model for enterprise decision-making.

Not disclosed in this posting: compensation, years of experience, work arrangement, visa sponsorship.

Benefits

Health Insurance Relocation Assistance Parental Leave

Joblaze summary

In this role, the Applied AI Engineer focuses on developing and optimizing a large neural network-based tabular model, primarily using Python and Rust. Key skills include strong software engineering fundamentals, experience with machine learning models in production, and proficiency in performance optimization. This position is ideal for someone with a solid background in software engineering and a deep understanding of neural networks, particularly those looking to tackle complex challenges in a pioneering AI company. Fundamental's mission-driven culture emphasizes collaboration and innovation in enterprise decision-making.

Joblaze insights

  • Listed about a month ago — first seen on Joblaze September 3, 2026. Last confirmed on Fundamental's careers page October 31, 2026.
  • Python appears in 48.1% of 834 comparable mid ai/ml roles; Rust appears in 3.4% of 834 comparable mid ai/ml roles.

Quick facts

What's the tech stack?
Joblaze extracted these technologies from the posting: C++, PyTorch, Python, Rust.
What seniority level is this role?
Fundamental targets mid-level candidates for this position.
Is this full-time or contract?
Full-time for this Applied AI Engineer role at Fundamental.

From the original posting

Key responsibilities

  • Take part in development and optimization of a large neural network-based tabular model implemented in Python

  • Profile training and inference pipelines to identify performance bottlenecks

  • Rewrite critical components in Rust (via PyO3 or custom extensions) where Python limits us, with C++ (via PyBind11 or custom extensions) as a secondary option where appropriate

  • Improve memory efficiency, latency, and throughput across model pipelines

  • Ensure correctness, numerical stability, and reproducibility as the model evolves

  • Collaborate with ML researchers on productionizing new capabilities

  • Maintain clean abstractions, comprehensive tests, and clear documentation

  • Shape architectural decisions for our ML systems handling tabular data

Must have

  • Strong software engineering fundamentals with expert-level Python and Rust

  • Hands-on experience bridging Python and Rust (PyO3, maturin, or custom extensions)

  • Experience developing and maintaining ML models in production

  • Strong understanding of neural networks

  • Track record of optimizing performance-critical code

  • Strong profiling and debugging skills (CPU, memory, latency)

Nice to have

  • Experience with tabular ML approaches (transformers, tree/NN hybrids, learned embeddings)

  • Working proficiency in C++ and experience bridging Python and C++ (PyBind11, Cython, or custom extensions)

  • Familiarity with PyTorch internals or writing custom ops (Rust or C++)

  • Experience optimizing training loops, data pipelines, or inference engines

  • Background in numerical computing or systems programming

  • Exposure to large-scale ML infrastructure (distributed training, batching, caching)

  • Experience with the Rust async ecosystem (tokio) or SIMD/parallelism crates (rayon, ndarray)

Benefits

  • Competitive compensation with salary and equity

Standard company text repeated across Fundamental's postings is omitted here.

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