Sr. Application Security Engineer / Ethical Hacker

Sherwin-Williams; United States; Remote; USD 140,000 - 190,000; Full time

Job summary

Sherwin-Williams Co. is seeking a Senior Application Security Engineer to plan and perform manual penetration testing on traditional and AI-enabled applications.

You will identify and validate security vulnerabilities, mentor team members, and develop scripts and tools to enhance testing capabilities. The role involves strategic planning, deployment of offensive security tooling, and collaboration with development teams to remediate risks.

Qualifications

• Bachelor's Degree (or foreign equivalent) required; 12+ years in IT/Business acceptable in lieu.
• 5+ years IT/cybersecurity experience.
• 5+ years in application security, including hands-on pentesting/assessments.

Responsibilities

• Plan and perform manual penetration testing of traditional and AI-enabled applications.
• Identify, exploit, validate, and document security vulnerabilities; provide remediation guidance.
• Develop scripts, automation, and custom tools to improve testing capabilities.
• Mentor and provide guidance to other Application Security team members.
• Communicate findings and risk to technical and non-technical stakeholders.
• Retest applications and validate remediation of findings.

Skills

Penetration testing

Automation scripting

Stakeholder communication

Offensive security

Team mentorship

Education

Bachelor's degree (or foreign equivalent)

12+ years IT/Business experience (alternative)

Tools

Python

PowerShell

Cloud security tooling

Job description

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

Operational Management

• 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

Incidental Functions

• 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
• Assist with evaluating security tools, technologies, and service providers
• Perform project and task tracking and reporting as necessary

This is a remote position.

This position is not eligible for sponsorship for work authorization now or in the future, including conversion to H1-B visa. Must be legally authorized to work in the country of employment without needing sponsorship for employment work visa status now or in the future.

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.

Education and Experience

Required:

• 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

Advanced knowledge of:

• 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-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
• Ability to work independe