Member of Technical Staff - Research Software Engineer
Our Mission
Reflection is a research lab making intelligence open and accessible for everyone to use, customize, and build on. We build open models that let anyone control their intelligence and help shape the future of AI. Our mission: make intelligence open and accessible to all.
The Roles Mission
Bridge the gap between research and production by turning cutting-edge algorithms into scalable training systems. You will design and optimize the core infrastructure behind frontier AI models — from reinforcement learning training loops and distributed GPU training to massive-scale data pipelines.
Our systems train models across thousands of GPUs and process petabyte-scale datasets. We care deeply about numerical stability, throughput, and reproducibility.
What This Team Does
This team owns and evolves the core infrastructure behind our training systems.
We focus on:
Reinforcement learning training infrastructure
Distributed training and inference systems
Experiment infrastructure and reproducibility
Large-scale d
