Senior Software Engineer, App Foundation (Backend)

The Community You Will Join:

You’ll join Airbnb’s App Foundation team, a cross-platform team that builds high quality and performant capabilities that power almost all features in the Guest and Host ecosystem. 

We focus on building App Product Frameworks,  Insights & Logging, Performance & App Health, and Feature Architecture, partnering closely with Product, Design, Platform (iOS/Android/Web), Analytics Infrastructure, Data Platform, and peer Product Foundation teams to provide cohesive paved paths and standards at scale. Our culture values technical excellence, pragmatic decision-making, strong ownership, and a deep commitment to improving developer and user experience through foundational work.

The Difference You Will Make:

• Explore, shape, and develop new product experiences alongside cross-functional partners (design and product); from ideation to implementation at scale
• Build efficient and reusable backend capabilities, with high quality, while making sure to maintain performance and scalable systems.
• Lead initiatives that measurably improve Guest and Host experience by improving  app responsiveness, scale efficiently and reliability across key backend paths that impact millions.
• Drive a performance roadmap: identifying bottlenecks, prioritizing work by impact, and delivering improvements across services, data access patterns, and infrastructure.
• Raise the bar on performance engineering by building tooling, benchmarks, and guardrails that prevent regressions and make performance a first-class part of how teams ship.
• Influence architecture and standards across Airbnb’s backend ecosystem, making systems more observable, more efficient, and easier to evolve.

A Typical Day: 

Millions of users across the world engage with the Airbnb app in multiple languages every day. As an engineer on the App Foundation team, you would be critical to the continued success and broad appeal of Airbnb. In this role, you will have an opportunity to: 

• Work collaboratively in cross-functional teams with design, product and data science partners, to define and ship impactful features. 
• Propose architectural patterns of a high-scale applications, such as well-designed APIs, data pipelines and efficient algorithms
• Writing unit and integration tests, reviewing other’s code
• Review service-level performance metrics and triage anomalies or regressions.
• Profile and debug performance issues across service boundaries and implement fixes (e.g., query optimization, caching strategies, concurrency improvements, payload reduction).
• Partner with engineers across teams to improve critical request flows - aligning on SLOs, rollout plans, and measurement strategies.
• Participate in code reviews and architecture discussions with a performance lens, helping teams ship changes safely and efficiently
• Document learnings and create playbooks so performance improvements scale beyond a single service or team.

Your Expertise:

• 5+ years of software development experience
• Strong expertise in one or more back-end server languages (Java/Kotlin/C++/etc.)
• Experience in building and scaling high-quality and high-traffic products (or systems)  in a distributed manner.
• Deep backend expertise, including proficiency with databases, cloud technologies, and asynchronous messaging systems.
• End-to-end ownership mentality that transcends team boundaries. 
• Passion for building strong collaborative relationships with other engineering & product partners
• Want to tackle projects with large open-ended scope and drive significant business impact
• Able to self-serve on data analysis and make data driven decisions
• Rigorous attention to detail and the ability to tackle ambiguous problems
• Embrace the ever changing culture, prioritize breadth over then in-depth but can still go in-depth when needed.

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.