Senior Staff Software Engineer (AI)

TL;DR

Senior Staff Software Engineer (AI): Building and optimizing the growth onboarding experience for a fintech platform with an accent on AI-driven product innovation and full-stack development. Focus on inventing 0-to-1 product experiences, scaling customer activation, and leading technical strategy across cross-functional teams.

Location: Must be based in or able to commute to the San Francisco, CA area (Hybrid: 2-3 days per week in office).

Salary: $223,000–$278,000/yr

Company

A fintech company providing payroll, benefits, and HR solutions to over 500,000 small businesses.

What you will do

• Own the end-to-end signup-to-activation experience, from data modeling to UI implementation.
• Prototype and build net-new AI-powered onboarding experiences from the ground up.
• Partner with Product, Design, and Data teams to validate hypotheses through rapid iteration.
• Design modular, reusable onboarding components to support new entry points into the platform.
• Raise the engineering bar through high-quality code reviews, technical direction, and mentorship.
• Make strategic scoping decisions to ship impactful features under tight time constraints.

Requirements

• 10-12+ years of software engineering experience building customer-facing products at scale.
• Strong full-stack fundamentals with the versatility to work across frontend, backend, and data layers.
• Proven experience applying AI/LLM capabilities to solve real-world product problems.
• Founder mindset with high ownership and comfort navigating ambiguity.
• Demonstrated ability to ship, measure, and iterate quickly in a fast-paced environment.
• Track record of technical leadership and mentoring engineers to raise team standards.

Culture & Benefits

• Competitive base pay, equity (RSUs), and comprehensive benefits package.
• Active engagement with AI tools to improve productivity and product innovation.
• Collaborative, outcome-driven team culture focused on customer activation.
• Commitment to diversity, equity, and inclusion in the workplace.
• Support for reasonable accommodations for qualified individuals with disabilities.