Zyphra is an artificial intelligence company based in San Francisco, California. The Role: As a Research Engineer - Language Model Pre-Training, you'll shape our language model roadmap through end-to-end pretraining development. You will work extremely closely with our pretraining team, who will integrate your insights into our next-generation models. You'll Work Across: • Large-scale training runs and model parallelization • Performance optimization of our pretraining stack • Dataset collection, processing, and evaluation • Architecture and methodology research, including optimizer ablations What We're Looking For / Requirements: • Strong engineering aptitude for rapidly implementing reliable and robust systems • Can rapidly learn new fields and are excited to implement new ideas • Excellent communication and collaboration skills, and can work effectively on both research and engineering implementation at scale Qualifications / Additional Skills: • Deep expertise and intuition for solving machine learning problems and training models • Experience with training on large-scale (multi-node) GPU clusters • Deep understanding of model training pipelines – including model/data parallelism, distributed optimizers, etc. • Strong grasp of proper experimental methodology for running rigorous ablations and other hypothesis testing • Understanding of large-scale, highly parallel data processing pipelines • High proficiency with PyTorch and Python. • Strong ability to dive into large pre-existing codebases and rapidly get up to speed • Published machine learning research in well-respected venues is a plus • 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