• Lead integration of our Flutter app with a third-party REST API • Design and implement reliable data flows between systems • Handle authentication, syncing, and edge cases gracefully • Build, extend, and maintain features in our Flutter mobile application • Take ownership of delivery from implementation through to release • Improve the existing codebase for performance, readability, and maintainability • Ensure smooth, responsive, high-quality user experiences • Debug and resolve integration issues and inconsistencies • Collaborate cross-functionally to deliver production-ready features

Airbnb was born in 2007 when two hosts welcomed three guests to their San Francisco home, and has since grown to over 5 million hosts who have welcomed over 2 billion guest arrivals in almost every country across the globe. Every day, hosts offer unique stays and experiences that make it possible for guests to connect with communities in a more authentic way. The Difference You Will Make: As a Senior Software Engineer on the Safety team, you will be working with data scientists, designers, product managers, analytics and customer service operations to innovate new ways we can detect and stop potential risky bookings or identify risk users by collaborating across team boundaries. On this team, you must have the curiosity to dig deep into various end to end systems in order to understand how and where the safety risk occurs. Your curiosity will be rewarded with finding projects that have outsized impacts on minimizing safety incidents on the platform and protecting Airbnb users from bad actors. A Typical Day: - Work with large scale back end systems to detect risks, using rules and connecting to productionalized machine learning models. - Work collaboratively with cross-functional partners including machine learning engineers, product managers, operations and data scientists, identify opportunities for business impact, understand, refine, and prioritize requirements for risk and mitigation. - Building out tooling and automation for operations to more effectively reduce safety risks. - Minimize good user impact while developing products to deter bad actors. - Examples include: build party risk detection mechanism and prevent it from happening, identify and prevent human trafficking cases, building data pipelines for product analysis and machine learning, and reducing safety risk at scale. Your Expertise: - 5+ years of industry experience on building systems at scale, inclusive MS or PhD in relevant fields - Passion for building user-facing products or large backend systems. - Experience in any of the following: Scala, Java, Python - Ability to write high performance production quality code - Exposure to architectural patterns of large, high-scale web applications, such as well-designed APIs, high volume data pipelines, and efficient algorithms. - Experience or desire to work collaboratively in cross-functional teams with design, product, data science, and research partners. - Ability to effectively communicate with non-technical stakeholders such as legal and operations. - Experience with the Trust and Risk domain is a plus. - Experience with the large language models is a plus. Your Location: This position is US - Remote Eligible. The role may include occasional work at an Airbnb office or attendance at offsites, as agreed to with your manager. While the position is Remote Eligible, you must live in a state where Airbnb, Inc. has a registered entity. Click here for the up-to-date list of excluded states. This list is continuously evolving, so please check back with us if the state you live in is on the exclusion list . If your position is employed by another Airbnb entity, your recruiter will inform you what states you are eligible to work from. Our Commitment To Inclusion & Belonging: Airbnb is committed to working with the broadest talent pool possible. We believe diverse ideas foster innovation and engagement, and allow us to attract creatively-led people, and to develop the best products, services and solutions. All qualified individuals are encouraged to apply. We strive to also provide a disability inclusive application and interview process. If you are a candidate with a disability and require reasonable accommodation in order to submit an application, please contact us at: reasonableaccommodations@airbnb.com. Please include your full name, the role you’re applying for and the accommodation necessary to assist you with the recruiting process. We ask that you only reach out to us if you are a candidate whose disability prevents you from being able to complete our online application. How We'll Take Care of You: Our job titles may span more than one career level. The actual base pay is dependent upon many factors, such as: training, transferable skills, work experience, business needs and market demands. The base pay range is subject to change and may be modified in the future. This role may also be eligible for bonus, equity, benefits, and Employee Travel Credits. Pay Range $191,000—$223,000 USD

Role Description We’re hiring a Senior Backend Engineer – PHP & Symfony for a company specializing in mission-critical aviation systems and advanced fuel management solutions. In this role, you will focus on developing and maintaining backend systems using PHP, Symfony, and PHPUnit, ensuring optimal performance across digital platforms. You will work on implementing robust, secure backend architectures that align with business requirements while maintaining reliability, maintainability, and code quality within an Agile environment. This is a permanent, full-time, remote role — perfect for a technically driven developer who thrives in a hands-on environment, building mission-critical backend systems that support global aviation operations. What You’ll Be Doing - Build & Run Our Products - Collaborate across teams to align business, technical, and testing goals - Estimate and plan tasks collaboratively to ensure delivery confidence - Review specs, design solutions, and deliver high-impact features - Monitor, deploy, and troubleshoot features in staging and production - Own incidents during on-call rotations, ensuring rapid resolution - Ensure High Quality & Continuously Improve - Uphold and enforce coding and testing standards - Break down complex work into manageable tasks for better delivery - Conduct code reviews, ensure test coverage, and maintain strong documentation - Stay up to date on tools, libraries, and secure coding practices (OWASP) - Provide Technical Excellence & Leadership - Break down epics, design scalable APIs and systems - Mentor peers on TDD, BDD, DDD, and best practices - Identify risks, drive automation, and recommend process improvements - Champion clean, modular, and maintainable architecture Qualifications - PHP (5+ years) - Symfony (at least 1 year of experience with one hands-on project) - PHPUnit (for testing) (1.5+ years) Requirements - MongoDB (2+ years) - Docker - Kubernetes - JavaScript - JQuery - React - API - NodeJS - Typescript What Sets You Apart - Backend Expertise in PHP, Symfony, and PHPUnit, delivering scalable, high-quality solutions - Efficient Problem-Solving, breaking down complexity for timely, reliable delivery - Proactive Mindset, driving improvements through thoughtful, hands-on solutions - Team Player & Mentor, sharing knowledge and upholding best practices - Operational Readiness, responding swiftly during on-call rotations - Quality-Focused, with clean code, thorough reviews, and strong documentation - Adaptable & Growth-Oriented, staying current with tools and driving innovation Benefits - Fixed Shifts: 12:00 PM - 9:30 PM IST (Summer) | 1:00 PM - 10:30 PM IST (Winter) - No Weekend Work: Real work-life balance, not just words - Day 1 Benefits: Laptop and full medical insurance provided - Support That Matters: Mentorship, community, and forums where ideas are shared - True Belonging: A long-term home where your contributions are valued

Role Description We are seeking a highly skilled PHP professional to lead the design, development, and implementation of our Customer Relationship Management platform built with intuitive and innovative technology that will enable client-facing teams to attract, convert, and retain more clients on autopilot, so they can earn more without working more. Your strong technical expertise and problem-solving abilities will be essential to driving the success of our projects. Responsibilities: - Design, develop, and maintain robust PHP applications, ensuring code quality and adherence to best practices. - Provide guidance and mentorship to development teams, ensuring adherence to best practices through training, code reviews, and active participation in planning meetings. - Work closely with engineering, product teams, and vendors to evaluate software solutions and solve integration challenges. - Create and maintain comprehensive documentation for new and existing systems, including UML, architectural, and data flow diagrams. - Provide technical guidance and supervision to our teams, ensuring they follow best practices through training, examples, documentation, by conducting code reviews and engaging during team planning meetings. - Analyze and optimize application performance and scalability, implementing solutions to address identified challenges. - Work with DevOps engineers to establish robust observability standards and ensure smooth production deployment, and post-production reliability. - Work with vendors to evaluate software and solve integration challenges. Qualifications - Bachelor's degree in computer science or work-related equivalent. - 5+ years of PHP (Laravel, CodeIgniter) software development experience. - 3+ years’ experience with database technologies such as MySQL, MariaDB, MySQL Aurora experience. - 5+ years’ front-end experience with Vue and React. - 3+ years’ production experience with Kubernetes, Helm, AKS/EKS. - Familiarity with AWS products: S3, EKS. - Familiarity writing documentation and creating UML, architectural and data flow diagrams. - Experience building integrations with vendors, and in-house APIs. - Knowledge in performance, scalability, enterprise system architecture, and engineering best practices. - Excellent communication and interpersonal skills working across multiple geographies. Requirements - Proficiency with Nuxt and/or Next.js, .NET Core (C#). - Proficiency in Azure Cloud including App Services, Functions, Service Bus, Monitoring, Cosmos DB, Blob Storage, Event Grid, ElasticSearch, SQL Server. - Experience optimizing applications or systems to maximize performance at scale. - Working knowledge of Banking, Financial Services or FinTech. - A deep understanding of cross-functional teams. - Experience in production deployments and resolving production issues. Benefits - Competitive package of additional benefits, including health, dental & vision. - Retirement with company contribution. - Parental leave. - Mental health & wellness benefits. - Generous PTO. - Sales incentive pay for most sales roles and an annual bonus plan for eligible non-sales roles.