Fiserv

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

Fiserv
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1 day ago
Sunnyvale, CA, USASenior
H1B sponsor

Base Salary

$140k - $210k/yr

Responsibilities

  • Design, develop, and execute security validation and testing strategies for Clover Device OS.
  • Manage and validate PKI infrastructure, Certificate Authority lifecycles, and HSMs for secure provisioning and key management.
  • Own platform security, vulnerability management, and operational quality across Clover hardware product lines.
  • Interpret PCI-PTS and PCI-PIN requirements and execute compliance, penetration testing, and risk validation workflows.
  • Audit CI/CD build pipelines, automated deployments, and golden images for supply chain security.
  • Troubleshoot embedded cryptography, TLS/mTLS, certificate lifecycle tools, and secure bootloader issues.

Requirements

  • 5+ years of professional experience in software security, PKI engineering, application security, or software QA/testing.
  • Hands-on experience with PKI, certificate and key management, and HSMs such as Thales.
  • Strong knowledge of security protocols, symmetric and asymmetric encryption, TLS/mTLS, and digital certificates.
  • Experience with vulnerability management, security scanning, and risk assessments in Linux, Android/AOSP, or cloud and embedded infrastructure.
  • Practical scripting experience with Python, PowerShell, or Bash.
  • Familiarity with Jenkins, GitHub Actions, Terraform, Jira, secure CI/CD pipelines, version control, and infrastructure orchestration.
  • Experience with regulated standards such as PCI-PTS, PCI-PIN, SOC 2, or ISO 27001 is preferred.
  • Exposure to BurpSuite, Metasploit, Wiz, AWS SSM, Android UIAutomator, adb debugging, or Logcat analysis is preferred.
  • Strong communication skills and the ability to partner with engineering, GRC, and product teams.

Benefits

  • On-site work Monday through Friday.
  • Paid holidays and generous time-away policies.
  • Medical, dental, vision, life, and disability insurance options available from day one.
  • Mental health support through Employee Assistance Programs.
  • Fuel Your Life wellness program, Employee Resource Groups, and peer recognition rewards.
  • Training, development, internal mobility, tuition assistance, and reimbursement opportunities.
  • Retirement planning, discounted shares through the Employee Stock Purchase Plan, and paid parental, caregiver, and military leave.

Tech Stack

BashGitHub ActionsJenkinsLinuxPowerShellPythonTerraform

Categories

Fiserv

About Fiserv

10,000+ employees

Fiserv builds payments and financial technology for banks, credit unions, merchants, and billers, including merchant acquiring, card issuing, core banking, and digital banking platforms. It earns revenue through transaction processing, software licensing, and managed services across POS (Clover), bill pay, ACH and card networks, and risk/compliance. The public company is headquartered in Milwaukee, trades on NASDAQ/BMV, acquired First Data in 2019, and serves clients in more than 100 countries.

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