Finix
Finix9d ago
USD 150000–220000/yr

Senior Software Engineer

United StatesUnited States·ChicagoFull-timesenior
Software EngineerSoftware Engineering
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Quick Summary

Overview

About Finix Finix is building the global operating system for fintech, starting with payments. From startups to publicly traded companies,

Technical Tools
Software EngineerSoftware Engineering

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.  
  • 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
  • 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
  • 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

    • Location & Eligibility

    Where is the job
    Chicago, United States
    On-site at the office
    Who can apply
    US

    Listing Details

    Posted
    September 16, 2026
    First seen
    September 16, 2026
    Last seen
    September 25, 2026

    Posting Health

    Days active
    -1
    Repost count
    0
    Trust Level
    79%
    Scored at
    September 16, 2026

    Signal breakdown

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    FinixSenior Software EngineerUSD 150000–220000
    Apply Now