Full-Stack Software Engineer

The role

You will be a core contributor to Agentic Systems and Interaction projects. You will build a desktop and browser-based agent that navigates the web, interacts with filesystems, and completes complex user tasks.

What you will do

• Design and implementation of agentic system designs for browsers, operating systems, filesystems, and collaboration tools
• Building search and retrieval pipelines across large-scale structured and unstructured data
• Build the backend layer for RAG systems and information context management systems
• Integrating LLMs, vision models, reinforcement learning, and scaffolding frameworks

Required qualifications

• Proficiency in Python
• 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
• Understanding of LLMs, prompting techniques, and orchestration frameworks for multi-step reasoning
• Ability to work across the whole stack from web interfaces to control plane and data infrastructure
• Experience designing or working with secure and virtualized execution environments
• Excellent communication and collaboration skills across product, research, and engineering teams

Nice to have

• Experience building or integrating retrieval-augmented generation (RAG) systems
• Experience working with enterprise security and compliance frameworks (i.e., SOC 2, GDPR, etc.)
• Familiarity with embeddings, vector databases and large-scale document indexing
• Knowledge of web automation tools and headless browser environments (i.e., 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
• Machine Learning experience

Benefits

• 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

About the company

Zyphra is an artificial intelligence company based in San Francisco, California.