Staff AI Designer

About the role

Fin is seeking a Staff AI Product Designer to define how our AI agents behave and integrate into complex user workflows. This position focuses on architecting system logic, decision frameworks, and human-AI interaction models rather than traditional interface design.

Key facts

What you'll do

• Identify high-value opportunities for AI implementation across the product.
• Establish boundaries for AI autonomy and human oversight.
• Architect workflows for multi-step and agent-to-agent interactions.
• Create decision frameworks for when systems should act, escalate, or defer.
• Design for edge cases, system failures, and uncertainty as core behaviors.
• Define metrics for success including trust, accuracy, and effort reduction.
• Conduct experiments to isolate variables and refine system performance.
• Collaborate with ML scientists, product managers, and designers to bridge technical capabilities with user needs.

Requirements

• Strong product judgment and the ability to influence cross-functional teams without formal authority.
• Experience working on zero-to-one products in ambiguous, fast-moving environments.
• Deep understanding of LLMs, their limitations, and traditional ML approaches.
• Ability to define design principles, heuristics, or evaluation criteria for AI systems.
• Systems-thinking mindset with a focus on behavior and logic over visual interface design.
• Scientific approach to designing experiments and analyzing failure modes.
• Ability to represent user needs within technical system constraints.

Skills & tools

• LLM architecture and limitations
• Traditional ML approaches
• Experimental design and data analysis
• Systems design and logic mapping
• Claude Code and AI experimentation tools

Practical notes

• Compensation includes competitive salary, equity, and regular performance-based reviews.
• Benefits include a pension scheme with up to 4% match, comprehensive health and dental insurance for employees and dependents, and life assurance.
• Perks include daily catered lunches, a fully stocked kitchen, and access to the Cycle-to-Work scheme.
• Leave policies cover flexible paid time off, paid maternity leave, and 6 weeks of paternity leave.
• Standard equipment is a MacBook, with Windows options available for specific roles.
• Fin maintains a neutral stance on social and political topics to foster a focused, cohesive work environment.