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Senior Application Security Engineer (Viator) at Tripadvisor. . Location: Poland. Viator, a Tripadvisor company, is the leading marketplace for travel experiences. We believe that making memories is what travel is all about. And with 300,000+ travel experiences to explore—everything from simple tours to extreme adventures (and all the niche, interesting stuff in between)—making memories that will last a lifetime has never been easier. With industry-leading flexibility and last-minute availability, it's never too late to make any day extraordinary. Viator. One app, 300,000+ travel experiences you’ll remember.. . We are looking for an experienced . Senior Application Security Engineer. to join our growing team at Viator. In this role, you will take a lead position in securing the applications that power our platform. As a Senior Engineer, you will design and implement advanced security measures, mentor junior engineers, and play a key role in ensuring the security of our products and infrastructure. This is a fantastic opportunity to influence our security practices and help shape the future of application security within the organisation.. . Viator is a remote-first company. This role is based remotely in Poland. We hire based on a permanent contract (UoP)/. . What You’ll Do:. . . Lead the design and implementation of advanced application security measures, including encryption, secure APIs, and identity management.. . Conduct in-depth threat modelling and risk assessments to identify and mitigate potential security risks.. . Performing manual security assessments including code reviews.. . Act as a Subject Matter Expert (SME)  for security breaches, including performing root cause analysis and creating corrective actions related to security vulnerabilities.. . Develop and enforce application security policies across multiple engineering teams, ensuring consistency and scalability.. . Mentor and train junior engineers, helping them improve their security knowledge and practices.. . Provide expert advice on security architecture and design for new features and systems.. . Collaborate with engineering and product teams to integrate security requirements into software development lifecycles.. . Champion security initiatives by advocating for prioritisation of security issues and resolution of technical debt.. . Stay up to date with the latest security threats and industry best practices, ensuring that the team remains proactive in its approach to security.. . . What You’ll Need:. . . Extensive experience in application security, including expertise in secure coding practices, threat modelling, vulnerability assessments, and incident response.. . Hands-on experience with security testing tools (SAST, DAST) and their integration into development pipelines.. . Strong understanding of advanced security concepts such as encryption, secure software design, identity management, and API security.. . Experience with cloud security (AWS, Azure, etc.) and securing microservices architectures.. . Proven leadership skills, with the ability to guide and mentor other engineers and influence security practices across teams.. . Excellent communication and collaboration skills, with a track record of working closely with cross-functional teams to improve security posture.. . 4+ years experience working as a Security Engineer / Application Security Analyst. . . Preferred Qualifications:. . . Experience with regulatory frameworks (e.g., GDPR, PCI-DSS, SOC 2) and their integration into security processes.. . Industry-recognised security certifications (e.g., OSCP, OSCE, or similar).. . Familiarity with the latest security tools and frameworks to proactively identify vulnerabilities and mitigate threats.. . A passion for mentoring and developing others, with a commitment to continuous learning and improvement.. . . Perks of Working at Viator. . . Competitive compensation packages. , including base salary and annual bonus. . “Work your way”. with flexibility to suit your lifestyle. We take a remote-friendly approach to collaboration, with the option to join on-site as often as you’d like in select locations. . . Flexible schedule. . Work-life balance is ingrained in our culture by design. Trust and accountability make it work.. . Donation matching. . Give back? Give more! We match qualifying charitable donations annually.. . Tuition assistance. . Want to level up your career? We love to hear it! Receive annual support for qualified programs.. . Lifestyle benefit. . An annual benefit to spend on yourself. Use it on travel, wellness, or whatever suits you.. . Travel perks. . We believe that travel is employee development, so we provide discounts and more.. . Employee assistance program. . We’re here for you with resources and programs to help you through life’s challenges.. . Health benefits. . We offer great coverage and competitive premiums. . . Our Values. . We aspire to lead; We’re relentlessly curious;... want to know more? Read up on our values: . . . We aspire to lead. . Tap into your talent, ambition, and knowledge to bring us – and you – to new heights.. . We’re relentlessly curious. . We push beyond the usual, the known, the “that’s just how it’s done.”. . We’re better together. . We learn from, accept, respect, support, and value one another– and are creating something remarkable in the process.. . We serve our customers, always. . We listen, question, respond, and strive for wow moments. . . We strive for better, not perfect. . We won’t get it right the first time – or every time. We’ll provide a safe environment in which to make mistakes, iterate, improve, and grow.. . Our workplace is for everyone. , as is our people powered platform. At Tripadvisor, we want you to bring your unique identities, abilities, and experiences, so we can collectively revolutionize travel and together find the good out there.. . .  . . #Viator