Senior Application Security Engineer

About the Position

We are seeking 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
• Hands-on experience with one or more application security technologies, such as SAST, DAST, IAST, SCA, or secrets-scanning tools
• Ability to validate security findings, distinguish actionable risks from false positives, and prioritize remediation
• Ability to read and understand code in at least one programming language (e.g., Java, C#, JavaScript/TypeScript, Python, or Go)
• Familiarity with modern application architectures, APIs, distributed services, and common software development practices
• Strong communication skills and the ability to provide practical guidance to engineering teams

Nice to Have

• Experience with DevSecOps practices, including integrating application security tools and security gates into CI/CD pipelines
• Experience creating or improving secure SDLC processes, security standards, and developer-facing secure coding guidance
• Familiarity with cloud application security concepts (AWS, Microsoft Azure, or Google Cloud)
• Knowledge of IAM and application identity concepts (SSO, OAuth 2.0, OpenID Connect, SAML)
• Experience with containers/Kubernetes or Infrastructure as Code security (Terraform and similar)
• Relevant security certifications (e.g., CSSLP, CISSP) or equivalent practical expertise

We Offer

• Enjoyable working environment, whether it is the vibrant office or the comfort of your own home
• Opportunity to work abroad for up to two months per year
• Relocation opportunities within our offices in 55+ countries
• Corporate and social events
• We invest in your growth:
  • Leadership development, career advising, soft skills and well-being programs
  • Certifications, including GCP, Azure and AWS
  • Unlimited access to EPAM's internal learning database
  • Free English classes with certified teachers
• We cover it all:
  • Participation in the Employee Stock Purchase Plan
  • Monetary bonuses for engaging in the referral program
  • Comprehensive medical & family care package
  • Trust days per year (sick leave without a medical certificate)
  • Discounts for fitness clubs, dance schools and sports programs
  • Benefits package (sports activities, a variety of stores and services)
  • Housing support program: preferential mortgage access via Otbasy Bank partnership

About the Company

We connect like-minded people: Delivering innovative solutions to industry leaders, making a global impact.