Software Engineer II

Airbnb

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. LOCATION This position needs to be based in the Beijing, China office 3 days a week. No Relocation and Visa Support   THE COMMUNITY YOU WILL JOIN The Notifications team at Airbnb is dedicated to designing and building the core notification systems that deliver seamless and effective notification experiences to our guests and hosts globally. We collaborate with product teams across the company to understand notification needs and empower them through scalable solutions. By leveraging modern technology and thoughtful governance, we strive to enhance guest and host engagement, minimize user fatigue, and drive meaningful business outcomes. THE DIFFERENCE YOU WILL MAKE We are looking for backend engineers who are passionate about building reliable systems and delivering user impact through their work. You will work in a global collaboration environment to turn product and engineering ideas into production systems. You will contribute to the development and evolution of our notification platform, help improve delivery timing and channel selection, and build scalable solutions that support product teams across Airbnb. A TYPICAL DAY * Collaborate with engineers and cross-functional partners to understand requirements, prioritize work, and scope projects within your team’s roadmap. * Contribute to technical design discussions and align implementation details with teammates and partner teams. * Write clean, testable, and maintainable code to build backend services and platform capabilities. * Participate in on-call rotation and contribute to operational excellence by improving runbooks, monitoring, and rollback readiness. * Debug production issues, follow through on fixes, and improve system reliability in the areas you own. * Mentor newer engineers within the team through code reviews, design discussions, and day-to-day collaboration. YOUR EXPERTISE * 3+ years of experience in a hands-on software engineering role, or equivalent practical experience. * Bachelor’s and/or Master’s degree, preferably in Computer Science, or equivalent experience. * Proficiency in one or more JVM-based languages such as Java, Kotlin, or Scala. * Experience building backend systems or services in a service-oriented or distributed systems environment. * Ability to drive alignment, manage projects and effectively collaborate with stakeholders. * Capable of making data driven decisions and articulating tradeoffs in any technical decisions. * Fluent communication in both English and Chinese.

Duolingo

Our mission at Duolingo is to develop the best education in the world and make it universally available. It’s a big mission, and that’s where you come in! At Duolingo, you’ll join a team that cares about educating our users, experimenting with big ideas, making fact-based decisions, and finding innovative solutions to complex problems. You’ll have limitless learning opportunities and daily collaborations with world-class minds — while doing work that’s both meaningful and fun. Join our life-changing mission to develop education for our half a billion (and growing!) learners around the world.  Read our blog to learn more. ---------------------------------------------------------------------------------------------------------------------------------- About the role... We’re looking for an iOS Software Engineer I to join our Momentum team under the International Growth area. In this role, you’ll build and ship features that drive user growth and deliver high-quality learning experiences to millions of learners worldwide. You’ll work closely with product managers and designers to create engaging experiences for users. You’ll gain experience working on iOS, running experiments, and collaborating cross-functionally to improve key metrics like daily active users (DAU). 🧠  You will... * Collaborate with product managers and designers to drive user growth * Develop, release, and maintain native iOS applications, primarily in Swift * Contribute to code reviews and collaborate across teams to ensure quality and scalability ✅  You have... * Graduated or will graduate with a B.S. or M.S. degree in Computer Science or related technical field (i.e. math, physics, or data science) before summer 2026 * 0–1 years of experience programming in one or more of: Java, Python, Swift * Dedication to our mission of universally available education * Relocation to Beijing, China. This position is based in Beijing. ⭐  Exceptional candidates will have... * A GPA of 3.6+ * A Duolingo streak * Proficient in both spoken and written English. ---------------------------------------------------------------------------------------------------------------------------------- The offered salary is dependent upon several factors, including work experience, skills, and internal peer comparisons. The posted range is subject to change in the future. For this role, base salary is supplemented by equity compensation. We encourage you to talk with your recruiter for more information related to compensation for this role! Salary Range: ¥561,429—¥759,593 CNY Benefits: Take a peek at how we care for our employees' holistic well-being with our benefits here. Job Alerts: Sign up for job alerts here. Accommodations: We will do everything we can within reason to make sure that your interview takes place in an environment that fairly and accurately assesses your skills. If you need assistance or accommodation, please contact accommodations@duolingo.com. Equal Employment Opportunity: Duolingo is proud to be an Equal Employment Opportunity employer. We do not discriminate based upon race, religion, color, national origin, gender (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, gender expression, age, status as a protected veteran, status as an individual with a disability, or other applicable legally protected characteristics. Fraud Warning: Unfortunately, there is a rise in scammers pretending to be real Duolingo employees. Duolingo and our employees will never ask for your Social Security number, bank details, or passport info, and we’ll never ask you to deposit a check, purchase equipment, or exchange money during the interview process. Real Duolingo employees always use an email that ends in @duolingo.com or @recruiting.duolingo.com. Stay alert and double-check these details before sharing any information.

Duolingo

Our mission at Duolingo is to develop the best education in the world and make it universally available. It’s a big mission, and that’s where you come in! At Duolingo, you’ll join a team that cares about educating our users, experimenting with big ideas, making fact-based decisions, and finding innovative solutions to complex problems. You’ll have limitless learning opportunities and daily collaborations with world-class minds — while doing work that’s both meaningful and fun. Join our life-changing mission to develop education for our half a billion (and growing!) learners around the world.  Read our blog to learn more. ---------------------------------------------------------------------------------------------------------------------------------- About the role... We’re looking for an Android Software Engineer I to join our Onboarding team. In this role, you’ll build and ship features that drive user growth and deliver high-quality learning experiences to millions of learners worldwide. You’ll work closely with product managers and designers to create engaging experiences for new users. This is an opportunity to contribute to a fast-moving, high-impact team focused on improving the new user experience. You’ll gain experience working across the stack (Android and backend), running experiments, and collaborating cross-functionally to improve key metrics like daily active users (DAU) and new users day 7 retention (NUD7).   🧠  You will... * Collaborate with product managers and designers to drive user growth * Lead individual project priorities, deadlines, and deliverables * Contribute to code reviews and collaborate across teams to ensure quality and scalability   ✅  You have... * Graduated or will graduate with a B.S. or M.S. degree in Computer Science or related technical field (i.e. math, physics, or data science) before summer 2026 * Experience programming in one or more of: Java, Python, Kotlin * Dedication to our mission of universally available education * Relocation to Beijing, China. This position is based in Beijing.   ⭐  Exceptional candidates will have... * A GPA of 3.6+ * A Duolingo streak * Proficient in both spoken and written English   ---------------------------------------------------------------------------------------------------------------------------------- Benefits: Take a peek at how we care for our employees' holistic well-being with our benefits here. Job Alerts: Sign up for job alerts here. Accommodations: We will do everything we can within reason to make sure that your interview takes place in an environment that fairly and accurately assesses your skills. If you need assistance or accommodation, please contact accommodations@duolingo.com. Equal Employment Opportunity: Duolingo is proud to be an Equal Employment Opportunity employer. We do not discriminate based upon race, religion, color, national origin, gender (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, gender expression, age, status as a protected veteran, status as an individual with a disability, or other applicable legally protected characteristics. Fraud Warning: Unfortunately, there is a rise in scammers pretending to be real Duolingo employees. Duolingo and our employees will never ask for your Social Security number, bank details, or passport info, and we’ll never ask you to deposit a check, purchase equipment, or exchange money during the interview process. Real Duolingo employees always use an email that ends in @duolingo.com or @recruiting.duolingo.com. Stay alert and double-check these details before sharing any information.