Software Engineering • Mid-Level

Who you are

You have a strong software engineering background with experience shipping production-grade systems — you've designed APIs and services that handle large-scale data or compute, and you're comfortable navigating complex codebases while debugging hard problems. You thrive in a high-agency, fast-paced startup environment, demonstrating a bias toward action and impact. You're excited about zero to one challenges, focusing on building new systems rather than maintaining legacy ones. As a collaborative and clear communicator, you enjoy working across research and infrastructure boundaries, motivated by the opportunity to create the software backbone for the world’s most capable open-weight AI systems.

What you'll do

In this role, you'll build the core software systems and tools that power our research, training, and production environments. You'll design and implement reliable, scalable, and secure services to support model development, deployment, and evaluation. Your work will involve developing APIs, SDKs, and internal platforms that enable rapid experimentation and high-velocity iteration. You'll drive engineering excellence and create the foundation for our next generation of AI models, providing the foundational layers that unify data, compute, and workflow management across model development.

What we offer

We believe in supporting our team members with comprehensive benefits, including fully paid parental leave for all new parents, financial support for family planning, and paid time off when you need it. We also provide relocation support and perks that optimize your time, such as daily lunch and dinner. Regular off-sites and team celebrations foster opportunities to connect with teammates, creating a collaborative and engaging work environment.