# Sr. Security & Test Engineer - Device OS (PKI & Firmware Security) at Fiserv

- Company: Fiserv
- What the company does: Fiserv is a global fintech and payments company with solutions for banking, global commerce, merchant acquiring, billing and payments, and point-of-sale.
- Company website: https://www.fiserv.com
- Type: Startups
- Level: Senior
- Location: Sunnyvale, California
- Work setup: On-site
- Posted: 2026-10-28
- Apply by: 2026-12-12
- Apply: https://fiserv.wd5.myworkdayjobs.com/en-US/EXT/job/Sunnyvale-California/Sr-Security---Test-Engineer---Device-OS--PKI---Firmware-Security-_R-10401285?utm_source=1752vc&utm_medium=careers
- Page: https://www.1752.vc/careers/jobs/fiserv-sr-security-and-test-engineer-device-os-pki-and-firmware-security/

## About the role

We're Fiserv, a global leader in Fintech and payments, and we move money and information in a way that moves the world. We connect financial institutions, corporations, merchants and consumers to one another millions of times a day - quickly, reliably, and securely. Any time you swipe your credit card, pay through a mobile app, or withdraw money from the bank, we're involved. If you want to make an impact on a global scale, come make a difference at Fiserv. Found on 1752vc Careers, the job board for startup and VC roles.

## What they're looking for

- 5+ years of dedicated professional experience in Security Testing, Software Quality Engineering (SDET), Embedded Security, or Application Security (AppSec)
- Hands-on Test Automation & Scripting: Strong programming skills in Python (plus Bash or Shell) to build automated test scripts, mock interfaces, and diagnostic test harnesses from scratch
- Operating Systems & Endpoint Debugging: Proven experience testing and debugging within Linux/UNIX or Android (AOSP) environments using command-line diagnostic tools (adb, Logcat, OpenSSL, Wireshark, system logs)
- Vulnerability Analysis & Fuzzing: Demonstrated ability to perform hands-on security assessments using tools such as Burp Suite, OWASP ZAP, Nmap, Metasploit, or custom fuzzing scripts
- Secure CI/CD Integration: Experience integrating automated security checks, static/dynamic scanning, or automated regression runs into CI/CD build pipelines (Jenkins, GitHub Actions, GitLab CI)
- Prior experience testing or certifying devices against payment industry standards: PCI-PTS, PCI-PIN, EMVCo, or Common Criteria


Source: 1752vc Careers, https://www.1752.vc/careers/jobs/fiserv-sr-security-and-test-engineer-device-os-pki-and-firmware-security/