AI Software Engineer - Comet Agents

Details

Perplexity is seeking an energetic engineer to join the Comet Agents engineering team. The team consists of AI/ML, backend, and full-stack engineers who collaborate to build agentic experiences within the Comet ecosystem (https://www.perplexity.ai/comet). The role spans applied research and engineering to advance agent capabilities for a large user base.

Responsibilities

• Drive cutting-edge AI capabilities across multiple layers of a rapidly growing product in the AI agents space.
• Design AI agents that navigate the digital world and perform valuable units of work for users.
• Train action and decision models that determine, based on complex multimodal states, how to accomplish user-specified objectives.
• Develop and leverage AI models, infrastructure, and browser technologies to scale capabilities across desktop, mobile, headless cloud, and other environments.
• Provide consistently excellent user experiences through flexible abstractions and frictionless backgrounding.
• Develop permission architectures, payload classifiers, and secure-by-design agentic capabilities.
• Design optimal data representations and modes of interaction between agents and environments.
• Contribute to product reliability, code quality, AI evaluation, testing, and ongoing maintenance.
• Collaborate with engineers, designers, product managers, and data scientists to integrate Perplexity functionality into Comet agents and vice-versa.

Requirements

• Strong foundational familiarity with the full AI product stack.
• Proficiency in Python (bonus points for TypeScript, Go, and/or Rust).
• Significant experience in at least one of the following areas:
  • Context engineering and tool interfaces for frontier AI models.
  • Post-training and reinforcement learning (particularly for multimodal models).
  • Browser technologies (CDP, Playwright, extension development, etc.).
• Experience designing or training action/decision models for multimodal state spaces.
• Experience developing permission architectures, payload classifiers, or other security-focused agent controls.
• Strong product intuition and a taste for user experience excellence.
• Comfortable working on a small, fast-moving team and taking ownership of features and systems.
• Passion for shipping products that surprise and delight users.

Benefits

• Compensation range: $200K – $300K (offers equity).
• U.S. full-time employees: equity, health, dental, vision, retirement, commuter and dependent care accounts, and more.
• International full-time employees: benefits tailored to region of residence.
• Final offers determined by experience and expertise; amounts may vary from the listed range.