Full-Stack Software Engineer

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About this role

Full-Stack Software Engineer San Francisco, California, United States Zyphra is an artificial intelligence company based in San Francisco, California. The Role: As a Full-Stack Software Engineer , you will be a core contributor to Zyphra's Agentic Systems and Interaction projects. You will be at the forefront of building a next-generation desktop and browser-based agent (end-to-end) that can autonomously navigate the web, interact with filesystems, and complete complex user tasks. This role spans agentic orchestration, frontend interfaces, secure sandboxing environments, large-scale document search and retrieval, and language/vision model integration. You'll Work Across: - Design and implementation of different agentic system designs capable of interacting with browsers, operating systems, enterprise filesystems, collaboration tools, etc. - Building search and retrieval pipelines across large-scale structured and unstructured data - Build the backend layer for RAG systems and other information context management systems required for agents to operate - Integrating LLMs, vision models, reinforcement learning, and scaffolding frameworks for autonomous, multi-step decision-making - What matters most is your drive to build production-grade software - We value velocity and curiosity, especially in fast-moving and ambiguous environments What We're Looking For / Requirements: - Proficiency in Python and a deep understanding of building and debugging complex end-to-end applications - Experience working with SaaS environment and production workloads, web interfaces, databases, search engines, and queuing systems - Experience developing browser extensions or automation tools with fine-grained control over the browser (mouse, tabs, DOM) - Understanding of LLMs, prompting techniques, and orchestration frameworks for multi-step reasoning - Ability to

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