Software Engineer Intern, Agent (London 2027)

As a Software Engineer Intern, Agent, you'll work directly on production AI agents for Sierra's customers. You'll gain hands-on experience contributing to the design and development of AI agents, shipping features, and learning from real-world use cases at scale. If you're hungry to shape and learn from the most important technological wave in history, come build at Sierra.

Responsibilities

Work directly on production AI agents for Sierra's customers; Contribute to the design and development of AI agents; Ship features; Learn from real-world use cases at scale

Requirements

Pursuing a bachelor's or master's degree in computer science or a related field; Strong technical problem-solving skills, especially in fast-changing, ambiguous environments; A builder and tinkerer's mindset with high agency - you find creative ways to overcome obstacles and ship; Excellent communication skills - clear, direct, and persuasive across technical and non-technical audiences; The intern program is open to students graduating December 2027 - June 2028

Nice to have

Experience building or deploying AI/LLM systems in production; Familiarity with tools that power today's AI agents: eval frameworks, agent tooling, RAG pipelines, and prompt engineering; Prior experience with React, TypeScript, and/or Go

Benefits

Flexible (unlimited) paid time off; Medical, dental, and vision benefits for you and your family; Life insurance and disability benefits; Retirement plan dependent on country of employment; Parental leave; Fertility and family building benefits through Carrot; Lunch, as well as delicious snacks and coffee; Discretionary benefit stipend; Free alphorn lessons; Interns are eligible for a monthly stipend for health insurance, daily lunch, and free alphorn lessons; Eligible full-time employees can participate in Sierra's equity plans