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Salary: USD 196,000 - 230,000 / annual
Airbnb's Internationalization Infrastructure team, part of Application Platform, is seeking a Senior Fullstack Engineer to build the technology that delivers high-quality experiences to guests and hosts around the world. The team owns three core pillars: translation workflows that move content from authoring through translation and delivery, guardrails that protect quality and reliability, and foundational libraries that ensure internationalization consistency across platforms.
In this role, you will design and build high-scale translation workflows, APIs, UIs, and libraries that provide consistent paved paths across Airbnb. You'll simplify legacy systems through safe migrations while improving reliability, observability, latency, security, and cost efficiency. You'll prototype applications of machine learning and large language models, then turn validated ideas into durable platform capabilities. You'll partner across Globalization, Data Science and ML, product and platform teams, and external vendors to solve ambiguous customer problems. Success is measured through outcomes such as quality, cost, latency, adoption, developer productivity, and operational load.
The ideal candidate works autonomously, turning broad goals and ambiguous problems into clear plans and shipped outcomes. You proactively find high-value problems, learn directly from customers and data, and connect technical work to measurable impact. You prototype early—especially with AI and machine learning—to test ideas and learn quickly. You combine strong distributed-systems judgment with the ability to deliver useful, intuitive full-stack experiences. You collaborate effectively while taking end-to-end ownership of decisions and execution, acting as an owner and steward of Airbnb's multilingual capabilities and the long-term health of the platform.
REQUIREMENTS:
- 5+ years of relevant industry experience with a BS or Master's degree in Computer Science, or equivalent practical experience
- Strong programming skills for hands-on individual-contributor work in Java, Kotlin, C++, or comparable backend language
- Experience designing, building, and operating distributed systems, APIs, storage and caching systems, event-driven processing, or service-oriented architectures at scale
- Experience evolving production systems through incremental migrations, testing, observability, and operational ownership
- Proficiency with JavaScript or TypeScript and experience with React or comparable modern web technologies sufficient to own internal workflows end to end
- Experience collaborating across organizational boundaries and communicating technical tradeoffs clearly to engineering and non-engineering partners
- Data-informed approach to system quality, reliability, efficiency, and customer experience
- Experience using AI-assisted development tools and agents to accelerate discovery, prototyping, implementation, testing, and documentation, with sound judgment about quality and verification
- Passion for globalization, inclusive user experiences, and building infrastructure that helps teams serve a worldwide community
