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