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.
ResponsibilitiesStrategy & 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-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 independently and collaboratively with development teams, security teams, and other stakeholders
- Experience mentoring and providing technical guidance to less-experienced professionals
- Experience conducting threat modeling and evaluating complex application attack paths
- Must be legally authorized to work in the United States without company sponsorship
- Must be at least eighteen (18) years of age
Preferred Experience
- Offensive Security Certified Professional (OSCP) certification strongly preferred
- Experience performing security testing of AI-enabled applications, LLMa, or related technologies
- Experience testing mobile applications and legacy industrial systems
- Experience reviewing source code to identify security vulnerabilities
- Experience developing proof-of-concept exploits or modifying security testing tools
- Additional offensive security or application security certifications
At Sherwin-Williams, our purpose is to inspire and improve the world by coloring and protecting what matters. Our paints, coatings and innovative solutions make the places and spaces in our world brighter and stronger. Your skills, talent and passion make it possible to live this purpose, and for customers and our business to achieve great results. Sherwin-Williams is a place that takes its stability, growth and momentum and translates it to possibility for our people. Our people are behind the strength of our success, and we invest and support you in:
Life … with rewards, benefits and the flexibility to enhance your health and well-being
Career … with opportunities to learn, develop new skills and grow your contribution
Connection … with an inclusive team and commitment to our own and broader communities
It's all here for you... let's Create Your Possible
At Sherwin-Williams, part of our mission is to help our employees and their families live healthier, save smarter and feel better. This starts with a wide range of world-class benefits designed for you. From retirement to health care, from total well-being to your daily commute—it matters to us. A general description of benefits offered can be found at http://www.myswbenefits.com/. Click on “Candidates” to view benefit offerings that you may be eligible for if you are hired as a Sherwin-Williams employee.
Compensation decisions are dependent on the facts and circumstances of each case and will impact where actual compensation may fall within the stated wage range. 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; licensure and certifications; and other business and organizational needs. The disclosed range estimate has not been adjusted for the applicable geographic differential associated with the location at which the position may be filled. The wage range, other compensation, and benefits information listed is accurate as of the date of this posting. The Company reserves the right to modify this information at any time, with or without notice, subject to applicable law.
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.
Sherwin-Williams is proud to be an Equal Employment Opportunity employer. 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.
Skills Required
- Bachelor's degree or foreign equivalent, or at least 12 years of Information Technology or Business experience in lieu of a degree
- 5+ years of IT and/or cybersecurity experience
- 5+ years of application security experience, including hands-on application penetration testing or offensive security assessments
- Advanced knowledge of web applications, APIs, and common application security vulnerabilities
- Advanced knowledge of manual application penetration testing methodologies and techniques
- Advanced knowledge of authentication, authorization, session management, and application business logic
- Advanced knowledge of SDLC and secure development practices
- Knowledge of AI architecture and model training processes
- Experience conducting end-to-end penetration tests for cloud-native and 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 independently and collaboratively with development, security, and other teams
- Experience mentoring and providing technical guidance to less-experienced professionals
- Experience conducting threat modeling and evaluating complex application attack paths
- Legal authorization to work in the United States without company sponsorship
- At least eighteen years of age
- OSCP certification
- Experience testing AI-enabled applications, LLMs, or related technologies
- Experience testing mobile applications and legacy industrial systems
- Experience reviewing source code for security vulnerabilities
- Experience developing proof-of-concept exploits or modifying security testing tools
- Additional offensive security or application security certifications
Sherwin-Williams Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Sherwin-Williams and has not been reviewed or approved by Sherwin-Williams.
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Healthcare Strength — Health coverage breadth is described as comprehensive across medical, dental, vision and related protections, with options like HSA/FSA, life, and disability included. Plan specifics are centralized in a dedicated benefits portal for clarity by role and location.
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Leave & Time Off Breadth — Time away is positioned as a meaningful component of total rewards, including PTO, vacation, holidays and leave programs (such as parental leave). Schedules and accruals are outlined in plan summaries and can be strong for many full-time roles.
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Wellbeing & Lifestyle Benefits — Education assistance via a Guild partnership and tuition reimbursement provide tangible upskilling pathways within the benefits package. Additional perks such as product discounts, wellness resources, and adoption assistance add lifestyle value.
Sherwin-Williams Insights
What We Do
Our mission began more than 150 years ago in 1866 when Henry Sherwin and Edward Williams founded the company in Cleveland, Ohio. The duo went on to shape an industry and create a global legacy. That legacy continues on today as we look ahead and continue to innovate our future. With stores, distribution centers and facilities spanning the globe, we're able to deliver the best in paints, coatings and related products to the world. From our headquarters to our 130 distribution centers and more than 4,000 retail locations, we continue to grow in new and exciting ways.
