Principal Engineer, AI Systems

Block is seeking a Principal Engineer, AI Systems to lead the development of autonomous agents and workflows across its platforms, including Square and Cash App. This role involves designing and deploying AI solutions that deliver tangible business value, ensuring reliability, safety, and scalability.

The Principal Engineer will be responsible for architecting and building end-to-end autonomous agents, integrating advanced language models, and optimizing agent architectures. Key tasks include designing agent orchestration systems, leading technical planning, and providing mentorship to engineering teams.

Candidates should have over 15 years of experience in software engineering or machine learning, with a proven track record in building autonomous agents in production environments. Expertise in agentic systems, large language models, and software engineering fundamentals is essential.

While specific compensation details are not provided, Block offers a comprehensive benefits package, including healthcare coverage, retirement plans with company match, employee stock purchase program, wellness programs, paid parental and caregiving leave, paid time off, learning and development resources, and paid life insurance, AD&D, and disability benefits.

Block fosters a culture of technical excellence, rapid experimentation, and learning. The company is committed to economic empowerment and offers opportunities for professional growth and impact within a dynamic and evolving environment.