Security Engineer

Tripadvisor

About Tripadvisor  The Tripadvisor Group connects people to experiences worth sharing, and aims to be the world’s most trusted source for travel and experiences. We leverage our brands, technology, and capabilities to connect our global audience with partners through rich content, travel guidance, and two-sided marketplaces for experiences, accommodations, restaurants, and other travel categories. The subsidiaries of Tripadvisor, Inc. (Nasdaq: TRIP), include a portfolio of travel brands and businesses, including Tripadvisor, Viator, and TheFork. We are looking for an experienced Senior Application Security Engineer to join our growing team at Tripadvisor Experiences. 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. 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. What We Offer  * Competitive compensation packages (routinely benchmarked against the latest industry data), including base salary and annual bonuses * “Work your way” with flexibility to suit your lifestyle. Tripadvisor Group takes a remote-friendly approach to collaboration across a worldwide team, with the option to join on-site as often as you’d like or as required by your team. * 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. * Generous referral scheme. Help us grow and be rewarded with generous awards for referring successful candidates.   Our Cultural Pillars: Traveler first We exist to create value for our customer, the traveler. We enable our suppliers and partners to unlock this value. Their collective behaviors and insights are what drives us.  Execution is our edge We act fast, experiment, learn from failure, iterate, and improve the solutions of tomorrow across every aspect of our business. Our execution is agile, data-driven, prioritised, and built to scale. We assume no problem is someone else’s problem and finish what can be done today, knowing tomorrow will bring fresh challenges.  We succeed together The best outcomes are driven by empathic, humble, and diverse subject matter experts working toward shared goals. We collaborate relentlessly, challenge assumptions, give actionable feedback, and set each other up for success through empowered teams with a clear charter. We transparently take ownership of our growth, individually and as a team. We celebrate the quality of our effort, our learnings, and our collective achievements.   We strive to create an accessible and inclusive experience for all candidates. If you need a reasonable accommodation during the application or the recruiting process, please make sure to reach out to your individual recruiter or our team at AccessibleRecruiting@tripadvisor.com. If you have any additional questions about careers at Tripadvisor you can email us at recruitment@tripadvisor.com. We have all the answers!

Tripadvisor

Software Engineer II   About Tripadvisor   The Tripadvisor Group connects people to experiences worth sharing, and aims to be the world’s most trusted source for travel and experiences. We leverage our brands, technology, and capabilities to connect our global audience with partners through rich content, travel guidance, and two-sided marketplaces for experiences, accommodations, restaurants, and other travel categories. The subsidiaries of Tripadvisor, Inc. (Nasdaq: TRIP), include a portfolio of travel brands and businesses, including Tripadvisor, Viator, and TheFork.   Tripadvisor Experiences Engineering is the team that builds and supports the world's leading marketplace for travel experiences. We believe that making memories is what travel is all about. And with 400,000+ travel experiences to explore—everything from simple tours to extreme adventures (and everything in between) —making memories that will last a lifetime has never been easier.   About the Role   We’re looking for a product-focused Software Engineer II to join our fast-growing Experiences Engineering team. This is a full-stack role, leveraging Java, SQL, React, AWS and AI tools. It’s ideal for mid-level engineers who enjoy solving complex problems, shipping frequently, and working in a modern cloud environment. You’ll play a key role in building high-impact features that power millions of traveler experiences globally.    We embrace flexibility in where and how work gets done and also value meaningful in-person moments to connect and collaborate. You can expect a remote-first working model with periodic in-person gatherings at your closest office for team connection, planning, or other key moments. This position is open to candidates based within a commutable distance (generally up to 1.5 hours) of one of our office hubs in London, Oxford, Krakow or Lisbon.   What You’ll Do    * Drive Impact: Connect your engineering work directly to traveler value by owning features from design to deployment. * Shape the Product: Partner with product, design, and data teams to influence what we build, helping to define specifications and find the most efficient path to success. * Collaborate & Mentor: Review code, provide thoughtful feedback, and coach less experienced engineers to maintain a high bar for quality. * Innovate with AI: Use agentic AI as a daily partner to plan approaches, automate routine tasks, and focus your energy on solving more complex technical challenges. * Champion Operational Health: Take hands-on ownership of system reliability by building monitoring dashboards, managing alerts and support cases, and fixing underlying bugs to continuously improve service resilience and eliminate operational toil. * Build for Quality: Design and implement clean, maintainable solutions with a focus on performance, security, and automated testing. Skills & Experience    We typically look for a minimum of 2-3 years’ experience, following a Bachelor’s degree or above in Comp Science or a related field.   * Full-Stack Mindset: Experience developing web apps, including proficiency in a modern backend language (e.g., Java, C#, Go, Python) and familiarity with relational databases. * Problem Solving: A strong grasp of computer science fundamentals (data structures, algorithms) and the ability to apply them to real-world distributed systems. * Data-Driven: A habit of using operational data and experiment results to validate that your changes had the intended effect. * AI Coding: you are fluent coding with either Cursor or Codex/Claude/Open Code.  * Global Mindset: Ability to operate effectively within a global team, communicating clearly about progress and blockers.   We don’t expect you to know everything on day one. However, we’re especially interested if you’ve had exposure to AWS, React, or NoSQL databases. More than any specific tool, we value curiosity and the ability to solve problems creatively.    We value engineers from different technical backgrounds. You can complete our coding interview exercises in any language of your choice, but need to be open to working within the Java ecosystem when you join!   What We Offer * Competitive compensation packages, including base salary, annual bonus, and more. * “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. * Generous referral scheme. Help us grow and be rewarded with generous awards for referring successful candidates. Our Cultural Pillars: * Traveller first: We exist to create value for our customer, the traveler. We enable our suppliers and partners to unlock this value. Their collective behaviors and insights are what drives us.  * Execution is our edge: We act fast, experiment, learn from failure, iterate, and improve the solutions of tomorrow across every aspect of our business. Our execution is agile, data-driven, prioritised, and built to scale. We assume no problem is someone else’s problem and finish what can be done today, knowing tomorrow will bring fresh challenges.  * We succeed together: The best outcomes are driven by empathic, humble, and diverse subject matter experts working toward shared goals. We collaborate relentlessly, challenge assumptions, give actionable feedback, and set each other up for success through empowered teams with a clear charter. We transparently take ownership of our growth, individually and as a team. We celebrate the quality of our effort, our learnings, and our collective achievements.   Discover more in our Tech Blog, for an inside look into some of our exciting and ground-breaking technical projects here at Tripadvisor Group.   Tripadvisor Group champions the unique identities, abilities, and experiences of all our people – employees, customers, and partners. This stems from our belief in the transformative power of travel, dining, and experiences to connect us and open doors to worlds very different from our own. Our ED&I strategy shapes how we approach our people, culture, business, and reputation. Tripadvisor Group strives to embed inclusion and belonging across all our brands.    We strive to create an accessible and inclusive experience for all candidates. If you need a reasonable accommodation during the application or the recruiting process, please make sure to reach out to your individual recruiter or our team at AccessibleRecruiting@tripadvisor.com. If you have any additional questions about careers at Tripadvisor you can email us at recruitment@tripadvisor.com. We have all the answers!

Attio

Attio is the CRM built for the AI era. Designed for the most ambitious go-to-market teams, it gives companies the power to understand every customer, automate at scale, and build their go-to-market motion exactly as they need. We've raised $116M from some of the world's best investors: GV (Google Ventures), Redpoint, Balderton, Point Nine, and 01A. We hire builders who thrive on complex technical challenges, hold themselves to a high bar, and genuinely care about delighting the people who use what they build. The team here brings sharp judgement, real craft, and the drive to do exceptional work. We're obsessed about the details and energized by the frontier. If you want to do the best work of your career, this is the right place. ABOUT THE ROLE Our Engineering team tackles the toughest challenges, so our users never have to. Real-time infrastructure, AI-native architecture, and a frontend that feels effortless - all powered by a team that moves fast, thinks rigorously, and holds an exceptionally high bar for quality. We’re looking for a Senior Product Engineer who takes pride in pushing boundaries, obsesses over details, and wants to help reinvent how millions of people work. WHAT YOU'LL DO * Use your strong expertise in TypeScript/Node.js/GCP to move the company and product forward * Lead projects end-to-end to solve real customer problems * Architect the systems which power new features to support our high standards of performance, reliability, security and scale, and re-architect existing systems as their scaling demands grow * Design REST API contracts for both internal and external consumers that are easy to work with * Represent Attio’s Product & Engineering values both internally and externally WHAT YOU'LL BRING * Experience designing scalable, reliable, secure backend systems * Excellent knowledge of modern Cloud Native systems architecture * Expertise with Node.js and TypeScript * A track record of ownership and product delivery * A proactive, self-motivated problem solving attitude, with a strong passion for advancing and innovating in distributed systems * The ability to communicate technical ideas to the wider team and influence stakeholders across Engineering, Product and Design Nice to have: * Experience contributing to, or participating in open source projects * An interest or experience in mentoring other members of the team * Experience working with data-rich backend applications, or processing large volumes of real-time data * A love for experimenting with new ideas, tools and techniques, and exploring new technologies WHAT WE OFFER * Equity in an early-stage tech company on an incredible trajectory * 25 days holiday plus local public holidays * Team off-site in fun places! (We've been to Barcelona, Lisbon, Malta, and Split so far)