Software Engineering Intern (Summer 2027)

Location: San Francisco, United States; available for a Summer 2027 internship with May or June start dates

Company

Scale AI develops reliable AI systems, high-quality data products, and full-stack technologies for enterprises, governments, and leading AI model developers.

What you will do

• Build reinforcement learning and post-training data pipelines for frontier model development.
• Develop evaluation infrastructure to measure model reliability for enterprise and public sector customers.
• Ship agentic AI applications and tooling that is observable, testable, and safe to deploy.
• Build fraud-detection, contributor-quality, and matching systems that operate at large scale.
• Create efficient UI/UX tooling and AI infrastructure products for visualizing, querying, and exploring Scale data.

Requirements

• Graduation in Fall 2027 or Spring 2028 with a Bachelor's degree or equivalent in Computer Science, EECS, Computer Engineering, Statistics, or a related field.
• Availability for a Summer 2027 internship in San Francisco, with a May or June start date.
• Product engineering experience, including building full-stack web applications and integrating APIs and services.
• Previous Computer Science or Software Engineering internship experience.
• A track record of shipping high-quality products and features and building systems that process large volumes of data.
• Experience with Python, TypeScript, React, and/or MongoDB.

Nice to have

• Hands-on experience with LLMs, evaluations, or agentic systems through coursework, research, or personal projects.
• Open-source contributions or a portfolio of shipped side projects.

Culture & Benefits

• Interns own real, shipped work on the same roadmaps as full-time engineers.
• Mentorship from experienced engineers and a culture focused on ownership, speed, truth-seeking, and product quality.
• Cross-functional collaboration and emphasis on customer impact, execution, and long-term consequences.
• Inclusive and equal opportunity workplace with reasonable accommodations available during the application and recruiting process.

Hiring process

• Candidates are subject to a 90-day waiting period before being reconsidered for the same role.