Sr. Application Security Engineer / Ethical Hacker

The Senior Application Security Engineer position is responsible for planning and performing manual penetration testing of traditional and AI-enabled applications, identifying and validating security vulnerabilities, and partnering with development teams to support remediation. This position will also develop scripts, automation, and custom tools that improve application security testing capabilities and provide technical guidance and mentorship to other members of the Application Security team.

Strategy & Planning

~ Acquire and interpret functional, technical, and architectural requirements to plan application security assessments

~ Develop testing strategies and test plans based on application functionality, architecture, data flows, and identified risks

~ Maintain advanced knowledge of application security testing methodologies, tools, and emerging attack techniques

~ Research risks and testing techniques associated with traditional and AI-enabled applications

~ Identify opportunities to improve penetration testing methodologies, testing effectiveness, and offensive security capabilities

Acquisition & Deployment

~ Evaluate, configure, and use offensive security tools to support application penetration testing

~ Develop and maintain scripts, automation, and custom tools to improve testing efficiency and effectiveness

~ Establish and maintain testing environments, payloads, and supporting technical resources

~ Evaluate new application security and AI security testing tools and techniques

~ Assist in developing repeatable testing procedures, methodologies, and technical standards

Plan and execute penetration tests of traditional and AI-enabled applications end-to-end

~ Identify, exploit, validate, and document application security vulnerabilities

~ Evaluate attack paths and application-specific risks that may not be identified through automated testing

~ Communicate technical findings, risk, and remediation recommendations to stakeholders

~ Retest applications and validate remediation of application security findings

~ Review assessment results and provide technical guidance to other members of the Application Security team

~ Track and report metrics related to assessment status, testing coverage, findings, and remediation progress

Create and maintain penetration testing documentation, methodologies, runbooks, and standard operating procedures

~ Mentor and provide technical guidance to less-experienced Application Security team members

~ Participate in team planning, retrospectives, and knowledge-sharing activities

~ Support Security Champions in reinforcing secure development and AI security practices

~ Perform project and task tracking and reporting as necessary

This is a remote position.
Job duties include contact with other employees and access confidential and proprietary information and/or other items of value, and such access may be supervised or unsupervised. The Company therefore has determined that a review of criminal history is necessary to protect the business and its operations and reputation and is necessary to protect the safety of the Company’s staff, employees, and business relationships.
Bachelor’s Degree (or foreign equivalent) or in lieu of a degree, at least 12 years in experience in the field of Information Technology or Business (work experience or a combination of education and work experience in the field of Information Technology or Business)
~5+ years IT and/or cybersecurity
~5+ years of experience in application security, including hands-on experience performing application penetration testing or offensive security assessments
~ Web applications, APIs, and common application security vulnerabilities
~ Manual application penetration testing methodologies and techniques
~ Authentication, authorization, session management, and application business logic
~ Software Development Lifecycle (SDLC) and secure development practices
~ AI Architecture and model training processes
~ Experience planning and conducting application penetration tests end-to-end, including assessments of cloud-native applications and other modern application architectures
~ Experience identifying, exploiting, validating, and documenting application security vulnerabilities
~ Experience developing scripts, automation, or custom tools using one or more languages
~ Experience using application security and offensive security testing tools
~ Experience communicating technical findings, risk, and remediation recommendations to technical and non-technical stakeholders
~ Experience conducting threat modeling and evaluating complex application attack paths
~ Experience performing security testing of AI-enabled applications, LLMa, or related technologies
Experience testing mobile applications and legacy industrial systems
Experience developing proof-of-concept exploits or modifying security testing tools
Additional offensive security or application security certifications

Your skills, talent and passion make it possible to live this purpose, and for customers and our business to achieve great results. Connection … with an inclusive team and commitment to our own and broader communities
At Sherwin-Williams, part of our mission is to help our employees and their families live healthier, save smarter and feel better. From retirement to health care, from total well-being to your daily commute—it matters to us. The wage range listed for this role takes into account the wide range of factors considered in making compensation decisions including skill sets; experience and training; Qualified applicants with arrest or conviction records will be considered for employment in accordance with applicable federal, state, and local laws including with the Los Angeles County Fair Chance Ordinance for Employers and the California Fair Chance Act where applicable.
All qualified candidates will receive consideration for employment and will not be discriminated against based on race, color, religion, sex, sexual orientation, gender identity, national origin, protected veteran status, disability, age, pregnancy, genetic information, creed, marital status or any other consideration prohibited by law or by contract.
As a VEVRAA Federal Contractor, Sherwin-Williams requests state and local employment services delivery systems to provide priority referral of Protected Veterans.
Please be aware, Sherwin-Williams recruiting team members will never request a candidate to provide a payment, ask for financial information, or sensitive personal information like national identification numbers, date of birth, or bank account numbers during the application process.