Software Full-Stack Engineer

About the role

• Build features for Agent One across the entire stack, connecting data layers, agent runtime systems, and user-facing interfaces
• Develop AI capabilities that include tool integration, memory management, evaluation systems, and consent handling mechanisms
• Architect data systems optimized for speed, privacy, and reliability with strict least-privilege principles and minimal data exposure
• Fine-tune performance across latency, accuracy, and user control while tracking and analyzing system metrics
• Produce compact, modular, legible, and reusable code that others can maintain and extend

What we're looking for

• Proven track record shipping and maintaining full-stack applications used by real people in production
• Direct hands-on work with large language models and AI agents, including implementing tool use, managing context windows, and building evaluation frameworks
• Judgment about product design and user interface considerations that goes beyond pure technical decisions
• Skill in diagnosing problems that span frontend, backend, database, and infrastructure layers

What you bring

• Experience running inference on-device or at edge locations is a plus
• Background working within actual privacy requirements or consent frameworks is valuable
• Open-source projects with public visibility strengthen your application

What the work involves

• Collaborating with product and design teams to translate requirements into working features
• Writing tests and monitoring systems to catch issues before they reach users
• Reviewing code and contributing to architectural decisions that affect the whole system
• Staying current with AI agent patterns and best practices as the field evolves