Full-Stack Software Engineer

The Role

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:

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
• 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
• Familiarity with enterprise security and compliance frameworks (i.e., SOC 2, GDPR, etc.)
• Knowledge of web automation tools and headless browser environments (i.e., Puppeteer, Playwright)
• Understanding of sandboxed or containerized compute environments with strict access controls
• Experience designing or working with user-facing agentic workflows and reasoning systems that span multiple modalities (text, vision, actions)
• Background in HCI or interest in building intuitive agent interfaces that extend human capabilities
• Machine Learning experience as a double bonus

Why Work at Zyphra

We value velocity and curiosity, especially in fast-moving and ambiguous environments.

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