> Markdown version of [/jobs/ext/115491-senior-penetration-tester](https://www.wearedevelopers.com/jobs/ext/115491-senior-penetration-tester). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Penetration Tester - **Company:** Fiserv, Inc. - **Location:** Omaha, NE, United States - **Experience:** Expert - **Salary:** $90,000.0 - $158,400.0 - **Contract:** Temporary contract - **Skills:** Kubernetes Security, Application Programming Interfaces (APIs), Amazon Web Services, Software System Penetration Testing, Automation of Tests, Microsoft Azure, Bash Shell, Burp Suite, Continuous Integration, Fat Client, Fuzz Testing, Github, Mobile Application Software, Python (Programming Language), Open Web Application Security, PCI Data Security Standards, Fortify (Software), Systems Integration, Web Applications, Google Cloud, Postman, Spring Cloud, Large Language Models, Software Security, Veracode, GWAPT, Kubernetes, Metasploit, Checkmarx, Restful APIs, Terraform, Docker, Jenkins, Static Application Security Testing, Vulnerability Analysis, Dynamic Application Security Testing - **Published:** May 21, 2026 - **Apply:** https://www.juju.com/job/00000000g11ay7 ## About the Role + 10+ years of experience in application penetration testing for web applications, RESTful APIs, mobile applications, and thick clients using manual exploitation and advanced assessment techniques. + 10+ years of experience in vulnerability research, exploit development, binary analysis, and proof-of-concept development. + 8+ years of experience in cloud and container security assessments (AWS, Azure, GCP, Docker, Kubernetes) for cloud-native applications. + 8+ years of experience with secure SDLC practices, threat modeling, and application security standards (OWASP Top 10, NIST, SANS) and compliance frameworks (e.g., PCI DSS). + 8+ years of experience integrating security into CI/CD and IaC pipelines, and testing automation (Jenkins, GitHub Actions, Terraform). + 6+ years of experience with scripting and automation (Python, Bash), and hands-on use of tools such as Burp Suite, Metasploit, MobSF, Postman, and fuzzing frameworks. + 6+ years of equivalent combination of educational background, related experience, and/or military experience. Experience that would be great to have: + Experience working in the financial services industry with secure application development and regulatory/compliance requirements. + Professional certifications such as OSCP, GWAPT, CPENT, or equivalent. + Experience applying LLMs and automation for vulnerability discovery, exploit generation, or security testing orchestration. + Hands-on experience with SAST/DAST/SCA platforms (e.g., Veracode, Checkmarx, Fortify) and integrating findings into developer workflows. + Proven experience mentoring engineers and collaborating with product, engineering, and risk teams to operationalize application security., + You must currently possess valid and unrestricted U.S. work authorization to be considered for this role. Individuals with temporary visas including, but not limited to, F-1 (OPT, CPT, STEM), H-1B, H-2, or TN, or any candidate requiring sponsorship, now or in the future, will not be considered for this role. ## Description At Fiserv, we deliver technology solutions that help clients move money and manage financial services securely and reliably. The Application Security team focuses on protecting our products and client data through proactive testing and advanced security practices. As a Senior Penetration Tester, you will lead in-depth assessments of web, API, mobile, and thick-client applications to reduce risk and strengthen our security posture. What you'll do: + Perform thorough penetration testing across web applications, RESTful APIs, mobile applications (iOS/Android), and thick clients using manual and automated techniques to identify and exploit vulnerabilities. + Develop and implement advanced penetration testing strategies, frameworks, and test plans tailored to different application architectures. + Lead security assessments, execute exploit development and proof-of-concept creation, and validate remediation effectiveness. + Provide technical guidance on remediation, secure coding practices, and risk mitigation to development and product teams. + Monitor and respond to application security incidents; conduct root-cause analysis and drive corrective actions. + Research and apply emerging tools, techniques, and threat intelligence to continuously improve testing coverage and automation. + Mentor and support team members, promoting a culture of application security engineering and secure SDLC integration. + Responsibilities listed are not intended to be all-inclusive and may be modified as necessary. ## Related Videos - [Security Pitfalls for Software Engineers](https://www.wearedevelopers.com/videos/726-security-pitfalls-for-software-engineers) - [Docker Compose: Rediscovered](https://www.wearedevelopers.com/videos/1978-docker-compose-rediscovered) - [Innovating Developer Tools with AI: Insights from GitHub Next](https://www.wearedevelopers.com/videos/1268-innovating-developer-tools-with-ai-insights-from-github-next) - [Securing Your Web Application Pipeline From Intruders](https://www.wearedevelopers.com/videos/53-securing-your-web-application-pipeline-from-intruders) - [Docker build without Docker](https://www.wearedevelopers.com/videos/100114-docker-build-without-docker) - [Bringing AI Model Testing and Prompt Management to Your Codebase with GitHub Models](https://www.wearedevelopers.com/videos/1536-bringing-ai-model-testing-and-prompt-management-to-your-codebase-with-github-models) ## Related Articles - [9 Ways to Make Money Hacking](https://www.wearedevelopers.com/magazine/333-9-ways-to-make-money-hacking) - [The 8 Best Code Testing Tools](https://www.wearedevelopers.com/magazine/402-the-8-best-code-testing-tools) - [Understanding and Mitigating Common Web Vulnerabilities](https://www.wearedevelopers.com/magazine/565-understanding-and-mitigating-common-web-vulnerabilities) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [Walking Into The Era of Supply Chain Risks](https://www.wearedevelopers.com/magazine/106-walking-into-the-era-of-supply-chain-risks) - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers)