Software Engineering Intern (Summer 2027)
Scale AI · San Francisco, CA
About this role
**Software Engineering Intern (Summer 2027)** At Scale, our mission is to develop reliable AI systems for the world’s most important decisions. For 10 years, Scale has provided high-quality data and full-stack technologies that power the world’s leading models—helping enterprises and governments build, deploy, and oversee AI applications that deliver real impact. Scale’s internship is not a side project. Interns own real, shipped work on the same roadmaps as full-time engineers, with mentorship from world-class talent and a culture that values ownership, speed, and truth-seeking. **Example Projects** - Build reinforcement learning and post-training data pipelines that power frontier model development - Develop evaluation infrastructure to measure model reliability for enterprise and public sector customers - Ship agentic AI applications and tooling to make them observable, testable, and safe to deploy - Ship tools that accelerate the growth of new qualified contributors on Scale’s platform - Build fraud-detection systems to remove bad actors and keep Scale’s contributor base safe and trusted - Use models to estimate the quality of tasks and contributors, and guarantee quality at scale - Devise advanced matching algorithms to pair contributors to customers for optimal turnaround and accuracy - Create optimized UI/UX tooling (with ML algorithms) for 100k+ contributors completing billions of complex tasks - Develop new AI infrastructure products to visualize, query, and explore Scale data **Requirements** - Graduation date in Fall 2027 or Spring 2028 with a Bachelor’s degree (or equivalent) in a relevant field (Computer Science, EECS, Computer Engineering, Statistics) - Available for a Summer 2027 internship (May/June start dates) in San Francisco - Product engineering experience (e.g., building web apps full-stack, integrating with APIs/services, talking to customers, iterating on what to build) - Previous Computer Science/Software Engineering internship experience - Track record of shipping high-quality products and features - Experience 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 (from coursework, research, or personal projects) - Open source contributions or a portfolio of shipped side projects **How We Work (Credos)** - **Earn Customer Love** — trust is earned with every interaction, delivery, and problem solved - **Team Flow** — ideas and support move freely across teams; optimize for the whole - **Quality is Our Cheat Code** — systems that deliver quality consistently are a structural advantage - **Find the 20%** — identify the inputs that drive outcomes and execute them completely - **Write the Market** — research puts us at the frontier; we bring partners there first - **Three Moves Ahead** — consider consequences of consequences and plan accordingly **PLEASE NOTE** - Our policy requires a 90-day waiting period before reconsidering candidates for the same role. **About Us / Equal Opportunity** - Scale is an inclusive and equal opportunity workplace. We are committed to equal employment opportunity regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability status, gender identity, or Veteran status. - Reasonable accommodations are available for applicants with physical and mental disabilities. If you ne
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