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

Fiserv
Sunnyvale
Workplace: OnsiteFull timeUSD 140,000 - 210,000 annuallyFunction: QA, Test & Release EngineeringExperience: 5+ yearsSkills: ["Communication"]

Design, build, and execute security validation for Clover Device OS powering point-of-sale hardware. Own PKI/HSM trust architectures, certificate authority lifecycles, and device provisioning, while ensuring end-to-end supply chain security through secure CI/CD and golden image practices. Perform compliance and risk validation against PCI-PTS/PCI-PIN, troubleshoot embedded cryptography and secure boot issues, and collaborate with engineering, GRC, and product teams to remediate findings.

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FursaFursa
Fiserv
Fiserv
3 days ago

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

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Source: Company careers pageValidated by: Fursa AI
Last checked: 9 hours agoStatus: Live

Job Summary

Design, build, and execute security validation for Clover Device OS powering point-of-sale hardware. Own PKI/HSM trust architectures, certificate authority lifecycles, and device provisioning, while ensuring end-to-end supply chain security through secure CI/CD and golden image practices. Perform compliance and risk validation against PCI-PTS/PCI-PIN, troubleshoot embedded cryptography and secure boot issues, and collaborate with engineering, GRC, and product teams to remediate findings.
Location: Sunnyvale
Workplace: Onsite
Employment Type: Full time
Job Function: QA, Test & Release Engineering
Seniority: Mid level

Key Responsibilities

  • •Design, develop, and execute security and testing strategies for Device OS powering Clover POS devices.
  • •Manage and validate PKI infrastructure, CA lifecycles, and HSMs for secure device provisioning and key management.
  • •Maintain overall platform security through vulnerability management and operational quality across Clover hardware product lines.
  • •Interpret PCI-PTS and PCI-PIN specifications to design compliance, penetration testing, and risk validation workflows.
  • •Audit and secure CI/CD build pipelines, automated deployments, and golden images for supply chain security.

Pay and Benefits

Salary: USD 140,000 - 210,000 annually
Perks:Health InsuranceDentalVisionLife InsuranceDisability InsuranceRetirementTuition AssistancePaid Leave

Key Requirements

  • •5+ years of professional experience in Software Security, PKI Engineering, AppSec, or Software QA/Testing.
  • •Deep hands-on experience with PKI, certificate & key management, and Hardware Security Modules (HSMs), e.g., Thales.
  • •Strong knowledge of security protocols including symmetric/asymmetric encryption, TLS/mTLS, and digital certificates.
  • •Experience with vulnerability management, security scanning tools, and risk assessments in Linux, Android (AOSP), or cloud/embedded infrastructure.
  • •Scripting skills (Python, PowerShell, or Bash) to automate security workflows, log extraction, and diagnostic testing.
Experience:5+ yearsFintechPaymentsPoint-of-saleEmbedded systemsPKIAppSecSoftware QA
Skills:Communication
Tech Stack:Public Key Infrastructure (PKI)Certificate Authority (CA)Hardware Security Modules (HSMs)ThalesTLSMTLSCI/CDJenkinsGitHub ActionsTerraformJiraLinuxAndroid (AOSP)PythonPowerShellBashAndroid test frameworks (UIAutomator)AdbLogcatBurpSuite

Company Brief

Fiserv
Provides payments, processing services, risk management, and core banking technology to financial institutions, merchants, and businesses worldwide, enabling digital payments, account processing, and financial services integration.
Industry: Fintech Infrastructure
Company Size: Enterprise (1,001+ employees)
Revenue: USD 1B+
Growth: Public Company
Valuation: Public Company (Market Cap in USD)
Funding: IPO / Publicly Listed
Headquarters: Brookfield, United States
Founded: 1984
WebsiteLinkedIn