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Senior Software Engineer

Finix · San Francisco

Extracted from the posting

Base
$150,000 – $220,000
Remote
On-site
Funding
$75M Series C; over $200M raised total
Stack
Java, AWS, CrowdStrike, CSS (company stack)

Senior Software Engineer owning technical vision, implementation, and infrastructure within a payments domain for customers' payment platform. Work includes designing secure, highly available APIs, defining new services with product management, and mentoring junior engineers. Stack is not specified in 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


About the role

The engineering team owns the delivery and stability of our product end to end. Since Finix serves as the complete payment platform of our customers’, our engineering team owns our customers’ ability to capture revenue. The Sr. Software Engineer role centers around envisioning superior technical solutions to our customers’ payment needs, leading its implementation and continuously ensuring reliable service to our customers. You will have broad autonomy and responsibility for formulating the best solution possible and working with your peers to deliver your vision. Finix is looking for a team member to join our engineering team who brings exceptional technical acumen, attention to detail, interest to grow and an obsession with building excellent, performing and scalable software.

You will

  • Deep dive into our customers’ needs, and work with product management to define new services
  • Own the technical vision, implementation, best practices and infrastructure within your domain
  • Develop close relationships with product management and peer engineers
  • Become an expert in your payments domain and mentor junior software engineers
  • Proactively improve our architecture, frameworks, tooling, automation, and best practices

You are

  • Experienced in designing, implementing, and testing superior software
  • Comfortable continuously delivering code, infrastructure, tests and features to production
  • Excited about finding new and better ways to make software reliable, scale and perform
  • Obsessed with finding edge cases, understanding requirements and design implications 
  • Proactive in monitoring running systems and troubleshooting production issues
  • Always looking for ways to grow, opportunities to mentor and collaborate with peers

You have

  • Have 4+ years of experience building and designing systems with several lifecycles 
  • Extensive experience implementing secure APIs, highly available and observable services
  • Led and mentored more junior software engineers
  • Kept tight control on multiple competing priorities and have strong ability to multitask
  • Raised the bar on every project you were involved in

Compensation: USD 150,000 – 220,000 per year salary

Company stack

This posting doesn’t list technologies. These are the ones Finix uses across its other roles.

JavaAWSCrowdStrikeCSSDockerHTMLJavaScriptKubernetes
Finix
Finix

Job details

TypeFull-time
Work ModeOn-site
LevelSenior
Location🇺🇸San Francisco, CA
Salary$150,000 - $220,000
PostedNov 06, 2026
Apply Now

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