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Applied AI Engineer

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<h1><strong>About Fundamental</strong></h1><p style="min-height:1.5em">Fundamental is an AI company pioneering the future of enterprise decision-making. Founded by DeepMind alumni, Fundamental has developed NEXUS – the world's most powerful Large Tabular Model (LTM) – purpose-built for the structured records that actually drive enterprise decisions. Backed by world class investors and trusted by Fortune 100 companies, Fundamental unlocks trillions of dollars of value by giving businesses the Power to Predict.</p><p style="min-height:1.5em"></p><p style="min-height:1.5em">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.</p><p style="min-height:1.5em"></p><h1><strong>Key responsibilities</strong></h1><ul style="min-height:1.5em"><li><p style="min-height:1.5em">Take part in development and optimization of a large neural network-based tabular model implemented in Python</p></li><li><p style="min-height:1.5em">Profile training and inference pipelines to identify performance bottlenecks</p></li><li><p style="min-height:1.5em">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</p></li><li><p style="min-height:1.5em">Improve memory efficiency, latency, and throughput across model pipelines</p></li><li><p style="min-height:1.5em">Ensure correctness, numerical stability, and reproducibility as the model evolves</p></li><li><p style="min-height:1.5em">Collaborate with ML researchers on productionizing new capabilities</p></li><li><p style="min-height:1.5em">Maintain clean abstractions, comprehensive tests, and clear documentation</p></li><li><p style="min-height:1.5em">Shape architectural decisions for our ML systems handling tabular data</p></li></ul><p style="min-height:1.5em"></p><h1><strong>Must have</strong></h1><ul style="min-height:1.5em"><li><p style="min-height:1.5em">Strong software engineering fundamentals with expert-level Python and Rust</p></li><li><p style="min-height:1.5em">Hands-on experience bridging Python and Rust (PyO3, maturin, or custom extensions)</p></li><li><p style="min-height:1.5em">Working proficiency in C++ and experience bridging Python and C++ (PyBind11, Cython, or custom extensions)</p></li><li><p style="min-height:1.5em">Experience developing and maintaining ML models in production</p></li><li><p style="min-height:1.5em">Strong understanding of neural networks</p></li><li><p style="min-height:1.5em">Track record of optimizing performance-critical code</p></li><li><p style="min-height:1.5em">Strong profiling and debugging skills (CPU, memory, latency)</p><p style="min-height:1.5em"></p></li></ul><h1><strong>Nice to have</strong></h1><ul style="min-height:1.5em"><li><p style="min-height:1.5em">Experience with tabular ML approaches (transformers, tree/NN hybrids, learned embeddings)</p></li><li><p style="min-height:1.5em">Familiarity with PyTorch internals or writing custom ops (Rust or C++)</p></li><li><p style="min-height:1.5em">Experience optimizing training loops, data pipelines, or inference engines</p></li><li><p style="min-height:1.5em">Background in numerical computing or systems programming</p></li><li><p style="min-height:1.5em">Exposure to large-scale ML infrastructure (distributed training, batching, caching)</p></li><li><p style="min-height:1.5em">Experience with the Rust async ecosystem (tokio) or SIMD/parallelism crates (rayon, ndarray)</p></li></ul><p style="min-height:1.5em"></p><h1><strong>Benefits</strong></h1><ul style="min-height:1.5em"><li><p style="min-height:1.5em">Competitive compensation with salary and equity</p></li><li><p style="min-height:1.5em">Comprehensive health coverage, including medical, dental, vision, and 401K</p></li><li><p style="min-height:1.5em">Paid parental leave for all new parents, inclusive of adoptive and surrogate journeys</p></li><li><p style="min-height:1.5em">Relocation support for employees moving to join the team in one of our office locations</p></li><li><p style="min-height:1.5em">A mission-driven, low-ego culture that values diversity of thought, ownership, and bias toward action</p></li></ul>

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Common Interview Questions And Answers

1. HOW DO YOU PLAN YOUR DAY?

This is what this question poses: When do you focus and start working seriously? What are the hours you work optimally? Are you a night owl? A morning bird? Remote teams can be made up of people working on different shifts and around the world, so you won't necessarily be stuck in the 9-5 schedule if it's not for you...

2. HOW DO YOU USE THE DIFFERENT COMMUNICATION TOOLS IN DIFFERENT SITUATIONS?

When you're working on a remote team, there's no way to chat in the hallway between meetings or catch up on the latest project during an office carpool. Therefore, virtual communication will be absolutely essential to get your work done...

3. WHAT IS "WORKING REMOTE" REALLY FOR YOU?

Many people want to work remotely because of the flexibility it allows. You can work anywhere and at any time of the day...

4. WHAT DO YOU NEED IN YOUR PHYSICAL WORKSPACE TO SUCCEED IN YOUR WORK?

With this question, companies are looking to see what equipment they may need to provide you with and to verify how aware you are of what remote working could mean for you physically and logistically...

5. HOW DO YOU PROCESS INFORMATION?

Several years ago, I was working in a team to plan a big event. My supervisor made us all work as a team before the big day. One of our activities has been to find out how each of us processes information...

6. HOW DO YOU MANAGE THE CALENDAR AND THE PROGRAM? WHICH APPLICATIONS / SYSTEM DO YOU USE?

Or you may receive even more specific questions, such as: What's on your calendar? Do you plan blocks of time to do certain types of work? Do you have an open calendar that everyone can see?...

7. HOW DO YOU ORGANIZE FILES, LINKS, AND TABS ON YOUR COMPUTER?

Just like your schedule, how you track files and other information is very important. After all, everything is digital!...

8. HOW TO PRIORITIZE WORK?

The day I watched Marie Forleo's film separating the important from the urgent, my life changed. Not all remote jobs start fast, but most of them are...

9. HOW DO YOU PREPARE FOR A MEETING AND PREPARE A MEETING? WHAT DO YOU SEE HAPPENING DURING THE MEETING?

Just as communication is essential when working remotely, so is organization. Because you won't have those opportunities in the elevator or a casual conversation in the lunchroom, you should take advantage of the little time you have in a video or phone conference...

10. HOW DO YOU USE TECHNOLOGY ON A DAILY BASIS, IN YOUR WORK AND FOR YOUR PLEASURE?

This is a great question because it shows your comfort level with technology, which is very important for a remote worker because you will be working with technology over time...