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
Proficiency in English at a B2+ level
We offer
We gather like-minded people:
Top tech minds driving innovation in AI, cloud and digital platform modernization
Supportive team and agile, startup-like culture
Hybrid by design mode and opportunity to work remotely within Poland
Chance to work abroad for up to 60 days annually
Business-driven relocation opportunities
We provide growth opportunities:
Career development programs
Thought leadership, mentoring, soft skills and well-being programs
Certification (Anthropic, Gemini, GCP, Azure, AWS)
English classes
We cover it all:
Stable pay
Participation in the Employee Stock Purchase Plan with a 15% discount
Benefits package (health insurance, multisport, shopping vouchers)
Referral bonuses up to $2,000
Offices featuring entertainment and relaxation zones, table tennis and football, free snacks, coffee and more
Corporate, social and well-being events
Please, note:
Benefits listed above are available to employees only
We are open for working with Contractors. Terms of B2B cooperation agreements are agreed individually
We will reach out to selected candidates exclusively
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.

Work arrangement
Yes