Full Stack AI Engineer

About the company Our client is an early-stage technology company. The role Raydar is recruiting for this role on behalf of our client. Design and build AI-driven systems along with the user-facing applications that sit on top of them, spanning backend services and front-end work. The position is hands-on and autonomous, with considerable greenfield development in a small engineering group. What you'll do - Develop autonomous agent systems, including memory and iterative self-improvement mechanisms. - Create pipelines for model evaluation and for generating artificial training data. - Devise grading methods for areas where correct answers are hard to define objectively. - Build vector search and retrieval infrastructure that handles heavy traffic. - Develop large-scale web crawlers that gather visual content. - Deploy model inference services and expose them through APIs for external users. - Improve tooling and infrastructure so that systems stay dependable and responsive. - Create internal data-management tools and interfaces for outside specialist reviewers. - Design engaging, game-like web features such as quizzes, rankings and incentive flows. Requirements What we're looking for - Background in shipping AI products used directly by end users, or time spent at a company built around AI. - Practical experience with LLM-based applications, including agent workflows, prompt and context design, embeddings and search indexing. - Ability to deliver complete products, from web interfaces to the backend systems that support them. - Degree in computer science or a related field. - Fluent English. - Comfort working in early-stage settings with unclear requirements. - Real curiosity about design and visual quality. - Inventive approach to building infrastructure for problems with no established playbook. Bonus points - Strong skills in React, TypeScript and Python. - Experience at a small engineering organization or a company that scaled quickly. - Public code contributions or side projects driven by personal curiosity. - Experience at design software, web indexing or data-focused companies. Benefits Compensation and benefits - Base salary: USD 175,000 to 275,000 per year - Equity - Relocation support Location and work model - San Francisco, California, United States - On-site, in office - Full-time