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Open nowPosted 396 days ago

Senior Frontend Engineer

Finix Payments27 open roles

Pay
$160,000 – $235,000 a year
Where
San Francisco
Work mode
On site
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Your applicationOpen nowSenior Frontend EngineerFinix Payments · San Francisco

  1. YouYes, apply to this one.

  2. CV RocketCV written for this posting.

  3. 25 readersRecruiter, hiring manager, skeptic. Round after round.

  4. CV RocketApplied on Finix Payments's own form.

The reply lands in your private mailbox

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The clock on this job

Early applications get read.

12.1% of postings close within 7 days. Measured by our own scanner across the market. Finix Payments postings stay open a median of 28 days.

Share of postings closed within
  1. 2.1%1 day
  2. 4.5%3 days
  3. 12.1%7 days
  4. 19.1%14 days
  5. 35.6%30 days
  6. 52.7%60 days
This job: posted 396 days ago

Finix Payments median: 28 days open

The posting

About Finix

Finix is building the global operating system for fintech, starting with payments. From startups to publicly traded companies, Finix processes tens of billions of dollars annually both in-store and online. Finix was founded in 2015 and is headquartered in San Francisco.

To date Finix has raised over $200M, including a $75M Series C led by Acrew Capital and Lightspeed Venture Partners and backed by American Express Ventures, Bain Capital Ventures, Homebrew, Inspired Capital, Visa, and others

As a Senior Frontend Engineer on our Frontend Engineering Team, you'll architect and build the core payment experiences that power thousands of businesses. You'll develop our comprehensive payments management dashboards and embeddable components that merchants integrate directly into their applications.

In this role, you'll drive the technical vision for customer-facing products from conception to production. You'll lead design and implementation decisions while ensuring our payment interfaces remain performant, secure, and intuitive as we scale. Our engineering team operates with high autonomy and ownership—each engineer makes meaningful contributions that directly impact customer success in our dynamic fintech environment.

Finix is looking for engineers who bring exceptional technical acumen, attention to detail, passion for growth, and an obsession with delivering an exceptional customer experience.

You Will:

  • Build and maintain sophisticated payment dashboards and transaction management interfaces
  • Build performant, accessible, and reusable component libraries that scale across multiple products
  • Lead technical design sessions and drive frontend architecture decisions
  • Optimize application performance for high-volume financial data processing
  • Collaborate with Product, UX, and Engineering teams to translate complex payment workflows into intuitive user experiences
  • Mentor engineers and establish frontend development standards and best practices

You Are:

  • Experienced in balancing rapid feature delivery with code quality, testing, and maintainability
  • Skilled at translating business requirements into scalable technical solutions
  • Proactive in monitoring live systems and troubleshooting production issues
  • Comfortable working with ambiguous requirements and driving clarity through technical discovery
  • Committed to knowledge sharing and building team capabilities through documentation and mentorship

You Have:

  • 6+ years of production experience with modern web technologies (HTML, CSS/SCSS, JavaScript/TypeScript)
  • 3+ years of hands-on React development in complex, data-heavy applications
  • Solid experience with state management solutions (Redux, Zustand, Recoil, or similar)
  • Strong background in testing strategies and frameworks
  • Experience building responsive, accessible web applications
  • Understanding of RESTful APIs and modern build tools

Bonus if you have:

  • Experience in payments, fintech, fraud prevention, or financial services
  • Backend development experience with Java/Spring, Docker, Kubernetes, or AWS
  • Track record building secure, observable APIs and distributed systems
  • Experience with micro-frontend architectures or component library development
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