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Finix

Developer-friendly API for payment processing

Senior Product Designer

Product DesignConfirmed live in the last 24 hours
Full-timeSan Francisco, CA, USA

About the Job

Requirements

  • At least 6 years of product design experience.
  • A strong track record of shipping complex B2B products.
  • Experience guiding or mentoring other designers’ work.
  • Ability to make strong product and design decisions with incomplete information.
  • Comfort operating in fast-paced, ambiguous environments.
  • High attention to detail and ability to produce clear, implementation-ready designs.

Responsibilities

  • Design and ship complex, high-impact features from concept to production.
  • Act as a hands-on individual contributor while helping guide overall design quality.
  • Partner with Product and Engineering to shape what the company builds, not just how it looks.
  • Review and critique work, pushing for clarity, simplicity, and strong execution.
  • Align stakeholders and drive decisions, especially in ambiguous or fast-moving situations.
  • Work closely with engineers to ensure high-quality, pragmatic implementation.
  • Contribute to and evolve the design system.
  • Own and design complex product areas end-to-end.
  • Partner with the Head of Design to help drive decisions, unblock teams, and maintain momentum when needed.

Desired Qualifications

  • Fintech or payments experience.
  • Experience with data-heavy or workflow-driven products.
  • Design systems experience.
  • Familiarity with frontend constraints or code-based prototyping tools.

About the Company

Finix

Developer-friendly API for payment processing

Finix provides a payment processing platform for software platforms, offering a developer-friendly API that lets SaaS providers, marketplaces, and e-commerce sites accept payments, handle merchant onboarding, and manage payouts. The API integrates into existing software to streamline payments and reduce operational complexity. It earns revenue by charging fees for API usage and related services, such as transactions or subscriptions. Finix differentiates itself by delivering a clean, easy-to-integrate payment solution that emphasizes reliability, security, and scalable payout and onboarding capabilities, enabling clients to grow revenue and cut costs instead of building payments from scratch. The company’s goal is to help software platforms run their payments efficiently, unlock more revenue from payment operations, and reinvest that income into their core products and teams.

Company size
201-500
Company stage
Series C
Total funding
$200.5M
Headquarters
San Francisco, CA
Founded
2015

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