Zyphra is an artificial intelligence company based in San Francisco, California. The Role: As a AI 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 that can autonomously navigate the web, interact with filesystems, and complete complex user tasks. This role spans frontend interfaces, secure sandboxing environments, large-scale document search and retrieval, and language/vision model integration. You’ll Work Across: • Design and implementation of an agentic system capable of interacting with browsers, operating systems, and enterprise filesystems • Building search and retrieval pipelines across large-scale structured and unstructured data • Integrating LLMs, vision models, reinforcement learning, and scaffolding frameworks for autonomous, multi-step decision-making • Engineering secure virtualized runtimes and backend services for agent execution • What matters most is your drive to build production-grade ML systems that push the boundary of what software agents can do • 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 ML-driven applications • Experience working with desktop operating systems (Windows and macOS), including APIs for screen reading, file interaction, and accessibility frameworks • 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 work across the full ML stack, from model integration to serving infrastructure • Experience designing or working with secure and virtualized execution environments • Excellent communication and collaboration skills across product, research, and engineering teams Qualifications / Additional Skills: • Experience building or integrating retrieval-augmented generation (RAG) systems • Experience working with enterprise security and compliance frameworks (e.g., SOC 2) • Familiarity with vector databases and large-scale document indexing • Knowledge of web automation tools and headless browser environments (e.g, Puppeteer, Playwright) • Understanding of sandboxed or containerized compute environments with strict access controls • Comfort designing user-facing agentic workflows and reasoning systems that span multiple modalities (text, vision, actions) • Experience using and fine-tuning models for screen reading, OCR, or UI understanding • Background in HCI or interest in building intuitive agent interfaces that extend human capabilities Why Work at Zyphra: • Our research methodology is to make grounded, methodical steps toward ambitious goals. Both deep research and engineering excellence are equally valued • We strongly value new and crazy ideas and are very willing to bet big on new ideas • We move as quickly as we can; we aim to minimize the bar to impact as low as possible • We all enjoy what we do and love discussing AI Benefits and Perks: • Comprehensive medical, dental, vision, and FSA plans • Competitive compensation and 401(k) plan • Relocation and immigration support on a case-by-case basis • In-office snacks and meals provided • Unlimited PTO and company holidays • In-person team in San Francisco with a collaborative, high-energy environment