Senior Application Security Engineer

We are looking for a Senior Application Security Engineer to reduce security risk across web applications and APIs throughout the software development lifecycle. You will partner closely with engineering teams to assess application security, perform secure design and code reviews, validate and prioritize findings, and drive remediation to closure.

This role focuses on practical application security outcomes: identifying real risk, reducing false positives, and helping teams build and ship secure software efficiently.

Responsibilities

• Perform security assessments of web applications, APIs, services, and supporting components
• Facilitate threat modeling and review architectures and technical designs from a security perspective
• Conduct secure code reviews and identify vulnerabilities and insecure implementation patterns
• Validate findings from automated tools, reduce false positives, and prioritize issues based on exploitability and business impact
• Provide clear, actionable remediation guidance and secure implementation recommendations
• Track findings through remediation and retesting in collaboration with development teams
• Advise teams on authentication, authorization, session management, input validation, data protection, cryptography, secrets handling, and API security controls
• Contribute to secure SDLC practices, security standards, guidelines, and reusable security patterns
• Communicate security risks and recommendations to technical and non-technical stakeholders

Requirements

• Hands-on experience in application security or product security
• Strong knowledge of web application and API security, including OWASP Top 10 and common vulnerability classes
• Practical experience with security assessments, secure design reviews, and/or secure code reviews
• Understanding of threat modeling and secure software design principles
• Strong knowledge of authentication, authorization, session management, input validation, cryptography, secrets handling, and data protection

We offer

CONTINUOUS UPSKILLING, LEARNING & DEVELOPMENT

• Diversity of tasks and projects
• Assessment center for objective review of competency level
• Personal development plan
• Mentoring programs and leadership development
• Certification and professional development support 
• Access to learning platforms including more than 2,500 internal courses
• English courses taught by certified teachers

CORPORATE BENEFITS

• Extra leave days
• Referral bonuses

COMPENSATION PACKAGE

• Competitive compensation paid in USD
• Regular salary and performance reviews

MEDICAL & HEALTHCARE

• Private health insurance
• Well-being events

WORKING ENVIRONMENT

• Recreation areas and kitchens
• Tea, coffee and snacks
• Sports equipment and game consoles
• IT Equipment
• Microsoft’s Software Assurance Home Use Program (HUP)

Please note that our Talent Attraction Team reviews applications and CVs submitted in English.

EPAM is global leader in AI transformation engineering and integrated consulting, serving Forbes Global 2000 companies and ambitious startups. With over thirty years of expertise in custom software, product and platform engineering, we empower our clients to become AI-Native enterprises, driving measurable value from innovation and digital investments.

Remote in Türkiye