Member Of Technical Staff (AI)

TL;DR

Member Of Technical Staff (AI): Developing open-weight models and general agents with an accent on post-training optimization, data curation, and reinforcement learning. Focus on building data generation pipelines, reward models, and inference-time scaling techniques to improve reasoning and instruction-following capabilities.

Location: Must work on-site in San Francisco, New York, or London

Company

An AI startup building open superintelligence with a team of researchers from leading industry organizations.

What you will do

• Build systems that transform pre-trained models into aligned, general-purpose agents.
• Drive research initiatives spanning from data curation to large-scale optimization.
• Develop and refine data generation pipelines, reward models, and RL algorithms.
• Collaborate across pre-training and post-training teams to achieve step-function gains in capability.
• Analyze and shape the understanding of how large models learn to reason and follow instructions.

Requirements

• Deep understanding of machine learning fundamentals and practical experience with large-scale LLM training.
• Strong engineering skills with experience in complex ML codebases and distributed systems.
• Proven ability to improve model behavior through data, reward modeling, or RL techniques.
• Evidence of leading research or engineering agendas that resulted in measurable model improvements.
• Ability to work fluidly across research and infrastructure boundaries.
• Strong communication skills and experience working in collaborative, high-agency environments.

Culture & Benefits

• Top-tier salary and equity packages designed for industry-leading talent.
• Comprehensive health, dental, vision, life, and disability insurance.
• Fully paid parental leave and financial support for family planning.
• Relocation support for eligible candidates.
• Daily catered lunch and dinner with regular team off-sites and celebrations.