Fullstack Software EngineerGeneralist Software Engineer (AI Agentic Systems)

ob Title: Fullstack Software Engineer/Generalist Software Engineer (AI / Agentic Systems)

Location: On-site at San Francisco CA

Duration: Full-time

About the Role

We are seeking a highly capable Generalist Software Engineer to join our lean fast-moving team at the forefront of Artificial Intelligence. This role is ideal for engineers who enjoy solving complex ambiguous problems using first-principles thinking and are excited about building foundational systems that push the boundaries of agentic AI.

You will play a critical role in developing our World Engine-a sophisticated interconnected digital environment that enables AI agents to learn reason and interact within simulated worlds. Your work will directly influence the next generation of AI-powered products and autonomous systems.

Key Responsibilities

• Design build and scale user-facing products and platform capabilities from concept to production.
• Develop and maintain highly performant applications using TypeScript React and Python.
• Build infrastructure and tooling that support AI agents simulation environments and intelligent workflows.
• Collaborate closely with researchers engineers and product stakeholders to solve novel technical challenges.
• Architect scalable backend services APIs and data systems to support AI-driven applications.
• Experiment with and integrate Large Language Models (LLMs) agent frameworks and reinforcement learning concepts.
• Drive technical decisions and contribute to overall product and engineering strategy.
• Take ownership of projects throughout the entire software development lifecycle.
• Continuously improve system reliability performance and developer productivity.

Required Qualifications

• Bachelors degree in Computer Science Software Engineering or a related technical field.
• 5 years of professional software engineering experience.
• Strong engineering fundamentals with hands-on experience in:
  • TypeScript
  • React
  • Python
• Proven track record of shipping user-facing products and features end-to-end.
• Experience designing scalable software systems and distributed applications.
• Strong problem-solving skills and ability to apply first-principles thinking to complex challenges.
• Excellent communication and collaboration skills.

Preferred Qualifications

• Experience building AI LLM-powered or agentic applications.
• Familiarity with reinforcement learning concepts and AI training environments.
• Experience with vector databases RAG architectures tool-calling frameworks or AI agents.
• Previous experience at a high-growth VC-backed startup or leading technology company (FAANG or equivalent).
• Demonstrated career progression through promotions increased ownership or technical leadership responsibilities.
• Contributions to open-source projects AI research or personal technical projects.

What Were Looking For

• Builders who thrive in ambiguity and enjoy tackling hard technical problems.
• Engineers with a strong sense of ownership and accountability.
• Individuals passionate about AI autonomous systems and emerging technologies.
• Self-starters who move quickly and execute effectively in fast-paced startup environments.
• Curious learners who actively explore new technologies through side projects and experimentation.

Nice to Have

• Experience with agentic AI frameworks such as LangGraph AutoGen CrewAI or similar.
• Exposure to reinforcement learning RLHF or simulation-based environments.
• Startup founding experience or early-stage company experience.
• Active GitHub portfolio demonstrating AI-related projects.