Jobs in the United States

25+ jobs

Group jobs by employerEmail me new jobs Save this search

Added just now
Autonomy Simulation Engineer
DoorDash USA
Oakland, CA
…changes before deployment. We are hiring an Autonomy Simulation Engineer to improve simulation fidelity and accelerate the development and validation of autonomous delivery…
Added 1 min ago
A
Systems Engineer
Actalent
Troy, MI
- $55 to $75 USD / hour
Job Title: Automotive Systems EngineerJob DescriptionThe Automotive Systems Engineer provides customer-facing technical support for integrated center stack and instrument cluster display…
Added 1 min ago
Entry-Level Missions Systems Software Engineer - Embedded
The Boeing Company
Berkeley, MO
…such as the following; Embedded System Software, C, C++, Rust, Linux, VxWorks, Containers, Git, CI/CD DevSecOps, and/or…
Added 1 min ago
IT Support Engineer I, Amazon OTS
Amazon.com Services LLC
Waco, TX
As an IT Support Engineer I, you will use your knowledge and specialized skills to implement technical solutions and provide high quality support for computer hardware, operating systems,…
Added 2 mins ago
Software Engineer, Apple Ads
Apple
Austin, TX · Cupertino, CA
Engineer secure, scalable distributed data processing pipelines capable of processing petabyte-scale datasets for indexing and retrieval.
Added 2 mins ago
Entry-Level Missions Systems Software Engineer - Embedded
The Boeing Company
Berkeley, MO
…such as the following; Embedded System Software, C, C++, Rust, Linux, VxWorks, Containers, Git, CI/CD DevSecOps, and/or…
Added 3 mins ago
Associate Release Engineer
Veeva
CA
Added 5 mins ago
Java Full Stack Developer-Software Engineer III
Deloitte US
San Francisco, CA · St. Louis, MO
…in a collaborative environment? As an experienced Software Engineer III- Sr. Java Full Stack Developer you will have the ability to share new ideas and collaborate on projects as a…
Added 5 mins ago
C
Senior SIEM Engineer
CAI
Frankfort, KY
- $70 to $80 USD / hour
The Senior SIEM Engineer will be responsible for designing, implementing, and optimizing Palo Alto Cortex XSIAM/XDR and Cribl solutions in a large-scale, multi-tenant 24x7 SOC environment,…
Added 6 mins ago
EG
Senior Systems Administrator / Infrastructure Engineer
Eliassen Group
Frankfort, KY
- $65 to $75 USD / hour
Our client seeks a senior-level Systems Administrator or Infrastructure Engineer to administer Linux and Windows Server environments, manage AWS services, and drive automation and…
Added 7 mins ago
DevOps Engineer II
UBLIC SERVICES, INC.
Phoenix, AZ
POSITION SUMMARY: The DevOps Engineer II serves as a technical resource and participates in all phases of the DevOps application development life cycle. The DevOps Engineer II analyzes…
Added 7 mins ago
HC
R&D Software Quality Assurance Engineer III
Hach Company
Loveland, CO
- $115,000 to $120,000 USD / year
Hach is seeking a Software Quality Assurance Engineer to help deliver high-quality software and firmware solutions for our water quality products. In this role, you will develop and execute…
Added 8 mins ago
LF
Disaster Recovery Engineer II
LPL Financial Corp
United States
- $35.01 to $58.38 USD / hour
This is a hybrid role, requiring onsite presence at our Fort Mill SC office 3 days per week, as much of the team and leadership are based there
Added 10 mins ago
Principal Forward Deployed Engineer, Operational AI
Aerospike, Inc.
Remote, United States
As a Principal Forward Deployed Engineer (FDE) at Aerospike, you will serve as the hands-on technical authority partnering with lead architects and engineering teams across Global 2000…
Added 14 mins ago
Lead Engineer, Data & Analytics Systems & App Administration
Cencora
Dallas, TX
The Lead Engineer, Data & Analytics Systems & Application Administration is a member of the Data & Analytics team, working alongside operational engineers, platform engineers and BI…
Added 19 mins ago
Data Engineer II
Vylor
Des Moines, IA · Des Moines
Pioneer Hi-Bred International, Inc. a subsidiary of Vylor Inc., seeks a full-time Engineer II based in Johnston, IA. The Engineer II partners with Analytics, Data Science, Research &…
Added 20 mins ago
M
Expert Software Engineer
Markon
Chantilly, VA
- $140,000 to $185,000 USD / year
Proficiency working in Red Hat Enterprise Linux (RHEL) command-line environments.
Added 24 mins ago
Senior Staff AI Systems Engineer
Northrop Grumman
Baltimore, MD · Baltimore
We are seeking a Senior Staff AI Systems Engineer to lead the architecture, development, and deployment of AI-enabled target recognition systems across multi-function RF sensors. In this…
Added 25 mins ago
Senior Specialist, Software Engineering 1
L3Harris
Salt Lake City, UT
Job Title: Senior Specialist, Software Engineer
Added 25 mins ago
2027 Associate Digital Signal Processing Engineer - Cincinnati OH
Northrop Grumman
Cincinnati, OH · Cincinnati
…Basic qualifications for an Associate Digital Signal Processing Engineer 1 are a Bachelor’s Degree. Basic qualifications for a Digital Signal Processing Engineer Engineer 2 are a Master’s…
Added 25 mins ago
NG
2027 Spring Electrical Engineer Co-op Intern - Cincinnati OH
Northrop Grumman
Cincinnati, OH · Cincinnati
- $18.75 to $42.5 USD / hour
Northrop Grumman is seeking a Spring Electrical Engineer Co-op/Intern. This position will be located at our Mission Systems Sector in Cincinnati, OH.
Added 25 mins ago
Systems Engineer Level 5 - Integration & Test
Northrop Grumman
Redondo Beach, CA · Redondo Beach
Candidate must have an active SCI at time of application OR Candidate must have an active U.S
Added 25 mins ago
Systems Engineer Level 2/3 - Integration & Test
Northrop Grumman
Redondo Beach, CA · Redondo Beach
Candidate must have an active SCI at time of application OR Candidate must have an active U.S
Added 26 mins ago
EG
Senior Systems Administrator / Infrastructure Engineer
Eliassen Group
Salt Lake City, UT
- $65 to $75 USD / hour
Our client seeks a senior-level Systems Administrator or Infrastructure Engineer to administer Linux and Windows Server environments, manage AWS services, and drive automation and…
Added 26 mins ago
Solution Architect - VM Ware
Quantiphi, Inc.
Remote, United States
Must have skills:

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

Applications open in a new tab.

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

Report this job

Work requirements

Jobs in the United States