Jobs in the United States

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Added 2 mins ago
J
Electrical Engineer
Jobot
Plainfield, IL
- $120,000 to $180,000 USD / year
We are seeking an experienced Electrical Engineer to join a growing organization specializing in industrial equipment, bulk material handling systems, process technology, and automation…
Added 2 mins ago
J
Mechanical Engineer
Jobot
Plainfield, IL
- $120,000 to $180,000 USD / year
We are seeking an experienced Mechanical Engineer to join a growing organization specializing in industrial equipment, bulk material handling systems, and process engineering solutions.…
Added 2 mins ago
CC
Cloud Engineer
CPI Card Group
Littleton, CO
- $31,533 USD / year
CPI Card Group is seeking a Cloud Engineer with a DevSecOps focus and hands-on experience in Amazon Web Services (AWS), AWS Security Services, infrastructure automation, to join the…
Added 4 mins ago
Engineering Manager, Hardware Test & Validation
Terabase Energy
Woodland, CA
At Terabase Energy, we believe digitalization and automation will help reduce the cost and improve the scalability of large-scale solar. Terabase is developing an interconnected software…
Added 4 mins ago
Engineering Manager, Hardware Test & Validation
Terabase Energy
Davis, CA
At Terabase Energy, we believe digitalization and automation will help reduce the cost and improve the scalability of large-scale solar. Terabase is developing an interconnected software…
Added 4 mins ago
Field Systems Engineer
Terabase Energy
Dallas
We are seeking a highly motivated and experienced Field Systems Engineer to join our team at Terabase Energy. You will be crucial to the success of our innovative solar construction…
Added 4 mins ago
Field Systems Engineer
Terabase Energy
Woodland
We are seeking a highly motivated and experienced Field Systems Engineer to join our team at Terabase Energy. You will be crucial to the success of our innovative solar construction…
Added 4 mins ago
Field Systems Engineer
Terabase Energy
Davis
We are seeking a highly motivated and experienced Field Systems Engineer to join our team at Terabase Energy. You will be crucial to the success of our innovative solar construction…
Added 4 mins ago
TE
Sr. Controls Engineer- Terafab R&D
Terabase Energy
Sacramento, CA
- $130,000 to $170,000 USD / year
Terabase is looking for an experienced automation controls engineer. This position reports directly to our Controls and Electrical Engineering manager and will work very closely with the…
Added 4 mins ago
TE
Sr. Controls Engineer- Terafab R&D
Terabase Energy
Davis, CA
- $130,000 to $170,000 USD / year
Terabase is looking for an experienced automation controls engineer. This position reports directly to our Controls and Electrical Engineering manager and will work very closely with the…
Added 4 mins ago
Compute Engineer
Terabase Energy
Remote, United States
At Terabase Energy, we believe that digitalization and automation will drive the next wave of innovation and cost reduction in large scale solar. To fully unlock the potential of this…
Added 4 mins ago
Maintenance Technician
Terabase Energy
Woodland, CA
…our pre-assembly factory comprised of customized mechanical systems, motors, actuators, sensors, basic electrical and vehicular systems. The candidate will work closely with our field…
Added 4 mins ago
SCADA and Controls Warranty Engineer
Terabase Energy
Remote, United States
Flexibility in work hours, including occasional night shifts, and the ability to work remotely or travel as needed are essential · Must have permanent authorization to work in the United States
Added 4 mins ago
TE
Sr. Controls Engineer- Terafab R&D
Terabase Energy
Woodland, CA
- $130,000 to $170,000 USD / year
Terabase is looking for an experienced automation controls engineer. This position reports directly to our Controls and Electrical Engineering manager and will work very closely with the…
Added 4 mins ago
RTDS Engineer
Terabase Energy
Remote, United States
Terabase Energy is seeking an RTDS Engineer to support the delivery of real-time Hardware-in-the-Loop simulation solutions for utility-scale solar, BESS, and hybrid renewable energy…
Added 4 mins ago
Project Design Engineer (SCADA)
Terabase Energy
Remote, United States
At Terabase Energy, we believe that digitalization and automation will drive the next wave of innovation and cost reduction in large scale solar. To fully unlock the potential of this…
Added 4 mins ago
Sr. Controls Engineer - OT SCADA Projects
Terabase Energy
Remote, United States
The Sr. Controls Engineer – OT SCADA Projects leads the design, configuration, commissioning, and support of plant control systems for utility-scale solar, storage, and hybrid renewable…
Added 4 mins ago
Sr. Controls Engineer - OT SCADA Projects
Terabase Energy
Remote, United States
The Sr. Controls Engineer – OT SCADA Projects leads the design, configuration, commissioning, and support of plant control systems for utility-scale solar, storage, and hybrid renewable…
Added 4 mins ago
IT Infrastructure Engineer
Terabase Energy
Remote, United States
Must have permanent authorization to work in the United States
Added 5 mins ago
Tech Professional, Quality Systems, AI
J&J Family of Companies
Raynham, MA
The Tech Professional, Quality Systems, AI is a seasoned individual contributor within the Supply Chain Technology function, Quality sub-function, accountable for the support, enhancement,…
Added 6 mins ago
Invenotry/Logistics Technician
Actalent
North Reading, MA
…handling. The position involves working with electro-mechanical systems, consumer electronic devices, and test setups, as well as using inventory and asset-management systems, CAD tools,…
Added 6 mins ago
Senior Mechanical Engineer (Teradyne, North Reading)
Teradyne
North Reading, MA
We are seeking a highly motivated and collaborative Senior Mechanical Engineer to support our Silicon Photonics Engineering group in North Reading, MA. Development occurs in a dynamic and…
Added 6 mins ago
EG
Automated Test Engineer
Eliassen Group
Boston, MA
- $40 to $50 USD / hour
Our client seeks an Automated Test Engineer to support Hivemind by monitoring and maintaining large volumes of automated tests, troubleshooting failures, and driving bug resolution across…
Added 16 mins ago
Associate Systems Administrator
Savannah River National Laboratory
Aiken, SC
Savannah River National Laboratory is seeking an Associate Systems Administrator to serve as a technical field support engineer. The selected candidate will serve as the first point of…
Added 25 mins ago
AI
Context Architect (Snowflake) (1317)
Axtria, Inc.
Berkeley Heights, NJ
- $131,200 to $174,975 USD / year
…points for agentic operations (feed monitoring, change request automation, DQ…

Fiserv

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

Sunnyvale, CA, United States

$140,000.00 - $210,000.00

Apply on usnlx.com About employer

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Job details

Pay: $140,000.00 - $210,000.00
Experience: 5+ years of dedicated professional experience in Security Testing, Software Quality Engineering (SDET), Embedded Security, or Application Security (AppSec).
Posting language: English
Posted: Sep 16, 2026

Original job description

Calling all innovators - find your future at Fiserv.

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.

Job Title

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

About your role:

Clover, a Fiserv company, is a global leader in point-of-sale platforms powering millions of small businesses worldwide with integrated smart hardware, software, and secure payment solutions.In this role, you will join the DeviceOS Quality & Security Engineering team, which owns the low-level platform software, secure boot infrastructure, and factory-provisioning firmware powering millions of Clover devices. You will serve as the hands-on security validation lead responsible for designing security test harnesses, executing vulnerability and penetration testing, automating cryptographic test suites, and validating embedded PKI/HSM key injection architectures. If you are a builder and breaker who loves testing embedded security protocols, fuzzing device endpoints, and verifying hardware against strict payment security standards (PCI-PTS, PCI-PIN), this is your team.

What you’ll do:

Automated Security Test Engineering: Design, build, and maintain automated security test frameworks and test beds (in Python) to continuously validate platform security across Android (AOSP) and Linux-based POS smart terminals.
Cryptographic & Key Management Testing: Author automated test suites to validate cryptographic handshakes, TLS/mTLS configurations, digital signature verifications, and Hardware Security Module (HSM, e.g., Thales) key generation, injection, and rotation workflows.
Penetration Testing & Vulnerability Assessment: Conduct hands-on vulnerability assessments, API fuzzing, interface testing, and penetration testing against device operating systems, bootloaders, and local communication endpoints (USB, serial, network).
Compliance & Standards Verification: Translate PCI-PTS, PCI-PIN, and EMVCo security specifications into executable verification plans, validating device tamper responses, secure key storage, and PIN-entry security mechanisms.
Firmware & Supply Chain Security Validation: Build automated test gates within CI/CD pipelines (GitHub Actions/Jenkins) to scan golden images, audit kernel/bootloader integrity, verify Secure Boot chains, and detect supply-chain vulnerabilities before mass manufacturing.
Defect Triage & Security Root-Cause Analysis (RCA): Partner directly with embedded OS developers and firmware engineers to isolate, reproduce, and verify fixes for cryptographic flaws, security regressions, and Common Vulnerabilities and Exposures (CVEs).

Experience you’ll need to have:

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.
Applied Cryptography & PKI Testing: Deep technical understanding of how to test and validate cryptographic algorithms (AES, RSA, ECC, HMAC), TLS/mTLS handshakes, certificate authority (CA) chains, and HSM-backed key operations.
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).

Experience that would be great to have:

Prior experience testing or certifying devices against payment industry standards: PCI-PTS, PCI-PIN, EMVCo, or Common Criteria.
Direct experience with Hardware Security Modules (HSMs), specifically validating secure factory key injection or PIN translation.
Hands-on familiarity with Android platform security internals (SELinux policy testing, verified boot / dm-verity, TrustZone, keystore).
Industry security certifications such as OSCP, CEH, GWAPT, CISSP, or equivalent practical security research experience.

How you’ll work:

This role is on-site Monday through Friday. Fiserv considers in-person collaboration to be an essential part of this role as in-person office experiences help you with your overall onboarding experience and leads to stronger productivity.
This role requires use of a computer and audio equipment.

Benefits at Fiserv:

Fuel Your Life program to support your physical, financial, social, and emotional well-being
Paid holidays and generous time away policies
No-cost mental health support through Employee Assistance Programs
Living Proof program to recognize your peers’ extra effort with points redeemable for rewards
Eight Employee Resource Groups to foster a collaborative culture and expand your network
·Unparalleled professional growth with training, development, and internal mobility opportunities
Medical, dental, vision, life, and disability insurance options available from day one
Retirement planning and discounted shares with the Employee Stock Purchase Plan
Tuition assistance and reimbursement program
Paid parental, caregiver, and military leave

Salary Range

$140,000.00 - $210,000.00

These pay ranges apply to employees in Sunnyvale, California. Pay ranges for employees in other states may differ.

It is unlawful to discriminate against a prospective employee due to the individual's status as a veteran.

For incentive eligible associates, the successful candidate is eligible for an annual incentive opportunity which may be delivered as a mix of cash bonus and equity awards in the Company’s sole discretion.

Thank you for considering employment with Fiserv. Please:

Apply using your legal name
Complete the step-by-step profile and attach your resume (either is acceptable, both are preferable).

Our commitment to Equal Opportunity:

Fiserv is proud to be an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, national origin, gender, gender identity, sexual orientation, age, disability, protected veteran status, or any other category protected by law.

If you have a disability and require a reasonable accommodation in completing a job application or otherwise participating in the overall hiring process, please contact AskHR.US@fiserv.com . Please note our AskHR representatives do not have visibility to your application status. Current associates who require a workplace accommodation should refer to Fiserv’s Disability Accommodation Policy for additional information.

Note to agencies:

Fiserv does not accept resume submissions from agencies outside of existing agreements. Please do not send resumes to Fiserv associates. Fiserv is not responsible for any fees associated with unsolicited resume submissions.

Warning about fake job posts:

Please be aware of fraudulent job postings that are not affiliated with Fiserv. Fraudulent job postings may be used by cyber criminals to target your personally identifiable information and/or to steal money or financial information. Any communications from a Fiserv representative will come from a legitimate Fiserv email address.

Apply on usnlx.com About employer

More about this job

Skills

Firmware
Point of sale
Penetration testing
Python
Linux
Communication skills
Regulatory compliance
Supply chain management
CI/CD
GitHub
Jenkins
Root cause analysis
Test automation
Bash
Debugging
UNIX
Wireshark
OWASP ZAP
Nmap
Metasploit
GitLab
Translation
CISSP
Research
Collaboration
Onboarding
Audio technology

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Work requirements

Jobs in the United States