Finix

Developer-friendly API for payment processing

Senior Security Engineer

Security Engineering & ArchitectureConfirmed live in the last 24 hours

Full-timeSan Francisco, CA, USAIn-person

About the Job

Requirements

At least 5 years of experience in security engineering, preferably in cloud-native fintech or payments.
Development experience in Java.
Strong AWS experience, including security services and infrastructure.
Hands-on vulnerability remediation experience.
Incident response experience.
Clear written and verbal communication, including presenting findings and recommendations to technical and non-technical audiences.
Working knowledge of PCI DSS and other regulatory frameworks.
Cryptography and key management experience.

Responsibilities

Partner with Engineering on the secure design and implementation of new features.
Secure AWS infrastructure and workstations, and lead security incident response.
Coordinate penetration tests, vulnerability scanning, and the bug bounty program; triage findings, lead fixes, and drive remediation with engineering.
Secure CI/CD pipelines and the software supply chain.
Own PCI architecture with engineering, including scoping, data handling, and secure SDLC.
Support HSM operations, key exchanges, and key injections.
Build and maintain controls for PCI DSS, SOC 2, and other regulations.
Support audit fieldwork and customer security questionnaires.
Secure internal AI tooling and set guardrails for AI use across the company.

Desired Qualifications

AWS Security Specialty, CISSP, or a similar certification.
Bug bounty and hands-on penetration testing experience.
CI/CD pipeline experience.
Infrastructure-as-code experience with Terraform.
Experience with IAM and identity providers such as Okta.
Experience with CrowdStrike, Palo Alto Prisma Access, or Sonatype Nexus.

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 organization at Finix owns the delivery and stability of our product end-to-end. As a Security Engineer, you will be responsible for the secure design, implementation, and operation of Finix’s cloud and corporate environments. You will work closely with Engineering, Information Security, Compliance, and IT.

This is an in-office position based in our San Francisco office.

You Will:

Partner with Engineering on secure design and implementation of new features
Secure our AWS infrastructure and workstations, and lead security incident response
Coordinate pentests, vulnerability scanning, and the bug bounty program: triage findings, lead fixes, and drive remediation with engineering
Secure our CI/CD pipelines and software supply chain
Own PCI architecture with engineering, including scoping, data handling, and secure SDLC
Support HSM operations, key exchanges, and key injections
Build and maintain controls for PCI DSS, SOC 2, and other regulations
Support audit fieldwork and customer security questionnaires
Secure internal AI tooling and set guardrails for AI use across the company

You Have:

5+ years in security engineering, preferably in cloud-native fintech or payments
Development experience in Java
Strong AWS experience, including security services and infrastructure
Hands-on vulnerability remediation experience
Incident response experience
Clear written and verbal communication, including presenting findings and recommendations to technical and non-technical audiences
Working knowledge of PCI DSS and other regulatory frameworks
Cryptography and key management experience

Nice to Have:

AWS Security Specialty, CISSP, or similar certification
Bug bounty and hands-on pentest experience
CI/CD pipeline experience
Infrastructure as code experience (Terraform)
Experience with IAM and identity providers such as Okta
Experience with CrowdStrike, Palo Alto Prisma Access, or Sonatype Nexus

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Finix is an equal opportunity employer and values diversity. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, disability status, or any other protected class.

Role: Security Engineer
Level: IC4-IC5
Location: San Francisco, CA
Compensation Range: $180,000 - $230,000/year + Equity + Benefits

Our salary ranges are determined by role, level, and location. The range displayed on each job posting reflects the minimum and maximum target for new hire salaries at our headquarters in San Francisco, California. Individual pay is determined by work location, job related skills, experience, and relevant education or training.

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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