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Active
On-site
San Francisco, California, United States
Posted · 17.03.2026
Ashby (US)

# Research Engineer - Model Architectures

Zyphra

ZYPHRA IS AN ARTIFICIAL INTELLIGENCE COMPANY BASED IN SAN FRANCISCO, CALIFORNIA.
THE ROLE:
As a Research Engineer
• Model Architectures, you will be a core contributor to Zyphra’s AI Architecture Research Team. This will involve designing and rigorously testing novel model architectures and training methodologies, with a focus on improving core modeling capabilities (e.g., loss per flop or loss per parameter) and addressing fundamental bottlenecks in contemporary models. You will also work extremely closely with our pre-training team, who will integrate your insights into our next-generation models.
WHAT WE'RE LOOKING FOR / REQUIREMENTS:
• Strong research taste and intuition
• The ability to work through a research project from conception to execution to write-up
• Strong implementation and prototyping ability can take an idea from conception to experimentation extremely quickly
• The ability to work well and cooperate with others in a high-paced research setting
• Curiosity, interest, and joy in understanding intelligence.
QUALIFICATIONS / ADDITIONAL SKILLS:
• Previous experience with long-term memory, RAG/retrieval systems, dynamic/adaptive computation, and alternative approaches to credit assignment
• Experience with reinforcement learning, control theory, and signal processing
• Generally, a joy in inventing and seriously assessing ‘crazy’ ideas, and the ability to have a unique perspective on things
• Understanding of modern training pipelines and the hardware requirements to design efficient architectures for GPU hardware
• Strong grasp of proper experimental methodology for running rigorous ablations and other hypothesis testing
• High proficiency with PyTorch and Python.
• Strong ability to jump into large pre-existing codebases and rapidly get up to speed and become productive
• Previously published machine learning research in well-respected venues
• Postgraduate degree in a scientific subject (Computer Science, EE/EECS, Math, Physics)
WHY WORK AT ZYPHRA:
• Our research methodology is to make grounded, methodical steps toward ambitious goals. Both deep research and engineering excellence are equally valued
• We strongly value new and crazy ideas and are very willing to bet big on new ideas
• We move as quickly as we can; we aim to minimize the bar to impact as low as possible
• We all enjoy what we do and love discussing AI
BENEFITS AND PERKS:
• Comprehensive medical, dental, vision, and FSA plans
• Competitive compensation and 401(k) plan
• Relocation and immigration support on a case-by-case basis
• In-office snacks and meals provided
• Unlimited PTO and company holidays
• In-person team in San Francisco with a collaborative, high-energy environment

This job was verified from Ashby (US). Applications are completed on the original source.

[Apply on the original listing ↗](https://jobradar.live/ilan/b4809fd5-1fa0-440e-bb89-d04774492847/git)

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