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 Community You Will Join: - Viaduct is a unified data access layer connecting most of Airbnb’s online data. More than 70% of Airbnb’s API traffic flows through the Viaduct platform. - Residing at the center of Airbnb’s tech stack between the user-facing products and backend infrastructure, Viaduct provides a global schema & query system through a GraphQL interface. - The Viaduct team is a very tenured and experienced team, setting the best practices and next-gen architecture for Airbnb. - As part of the Application Platform pillar of Infrastructure, we work closely with partner infra teams (Build Infra, Service Platform, CI/CD, Reliability, Observability, Developer Platform to name a few) as well as product engineers. - We treat our platform as a product and follow the principles of good Platform Engineering - Viaduct has been running in production for over six years and the team has gained a lot of experience in operating a GraphQL platform at scale. These insights informed the major rewrite - called Viaduct Modern - which we’re in the process of launching and continue to evolve. You will join the effort to create the best developer experience of hundreds of engineers at Airbnb using our revolutionary GraphQL platform. - Viaduct has been released as an Open Source project. Your contributions to the Viaduct platform will not only serve Airbnb-internal developers, but also any member of the Open Source community who chooses to adopt Viaduct. The Difference You Will Make: - Orchestrate and influence multiple technical tracks on the team from the core query engine and performance infrastructure to API ergonomics and reliability tooling, ensuring they interlock into a coherent, world-class developer platform. - Champion the evolution of Viaduct’s global GraphQL schema: guide the multi-partner steering committee, strengthen governance processes, and drive a long-term vision that scales with Airbnb’s growing product surface and data-as-a-service strategy. - Act as a multiplier for senior talent on the team: mentor teammates, cultivate technical leadership across Viaduct sub-teams, and foster an environment where every engineer can drive impactful initiatives. - Serve as a key technical voice partnering with product, infrastructure, and leadership stakeholders to align Viaduct’s roadmap with Airbnb’s strategic objectives. - Shape how hundreds of engineers and external open-source adopters build, ship, and operate GraphQL services by advancing Viaduct Modern and defining the next wave of capabilities. A Typical Day: - Dive deep into Viaduct’s engine, API layer, build system and performance tooling, identifying cross-cutting opportunities to raise reliability, efficiency, and developer delight. - Pair with teammates to untangle complex challenges, providing architectural guidance while amplifying their ownership and growth. - Facilitate the Viaduct Schema Steering Committee: set agendas, arbitrate proposals, and ensure decisions reflect diverse product needs and long-term maintainability across many systems and use cases. - Embrace and be a role model for an AI-first engineering approach, using LLM-powered agents to generate and iterate on code while you focus on problem-solving, system design, and quality oversight. - Partner with tenant teams to troubleshoot production issues, design self-service APIs, and evangelize GraphQL best practices through docs, talks, and office hours. - Contribute to and demonstrate ownership of the open-source Viaduct project garnering feedback from the community and shaping our external roadmap. Your Expertise: - 12+ years of backend & platform engineering designing, building, and operating mission-critical distributed systems at scale. - Proven experience guiding multi-year technical roadmaps: aligning long-term platform vision with day-to-day execution across multiple sub-teams or “tracks,” and influencing without relying on formal authority. - Deep expertise in GraphQL, API gateways, and schema design/federation. You have led the evolution of organization-wide schemas or contracts and can articulate best-in-class governance patterns (versioning, deprecation, breaking-change management). - Builder of developer experience & tooling: you treat internal developers as customers and champion self-service, documentation, and delightful DX. - Hands-on with modern languages (e.g., Kotlin/Java) and comfortable evaluating and introducing new technologies including AI-assisted development workflows (LLMs, code generation). - Exceptional communication and influence skills, equally effective white-boarding with senior ICs, partnering with cross-functional leads, and presenting strategy to executives and the broader engineering community. 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 $244,000—$305,000 USD

At Codelitt, we partner with ambitious companies to build digital products that solve real business problems. Our teams care deeply about product quality, strong engineering, and working closely with stakeholders to ship meaningful outcomes. About the Role We’re looking for a Senior Backend Engineer (Java & Python) to join our team on a high-impact engagement with one of our partners, a global wealth-tech and data platform that helps investment professionals manage complex portfolios, deliver better client experiences, and operate at scale. The company supports a large international client base, serving more than 1,400 firms across 60+ markets, and continues to invest heavily in client-facing products, integrations, and AI-enabled workflows. This role will embed with a senior engineering team responsible for expanding core advisor and client experiences across web and mobile platforms. Rather than working in a single monolithic codebase, you will contribute across multiple backend services and platforms, building and evolving systems implemented in Java and Python. You’ll help design and deliver backend capabilities, integrations, and platform improvements that support real product outcomes — not just isolated features. This is a hands-on engineering role with meaningful ownership, visible impact, and strong collaboration across teams. Who You Are - Backend-first engineer with strong production experience in Java and/or Python - Comfortable working across multiple services, systems, and codebases - Pragmatic and able to navigate complex or evolving architectures - Experienced with APIs, integrations, and distributed backend systems - Strong at building reusable platform capabilities, not just feature-by-feature implementations - Comfortable using AI tools to accelerate development while applying sound engineering judgment - Collaborative, low-ego, and able to integrate quickly into an experienced engineering team - Focused on delivering business value through reliable, maintainable systems What You’ll Do Backend Platform Development - Design, build, and extend backend services across multiple systems implemented in either Java or Python - Deliver clean, maintainable solutions that support new product capabilities - Improve platform reliability, scalability, and maintainability - Contribute to system design decisions and architectural evolution Integrations & Data Flows - Implement and maintain integrations between internal services and external platforms - Design reliable data flows across services and systems - Improve resilience, observability, and ownership across service boundaries - Help evolve backend patterns that support long-term platform growth Cross-Functional Delivery - Work closely with engineering leads, product managers, designers, and stakeholders to refine requirements and deliver incrementally - Support delivery of high-priority initiatives with clear timelines and measurable impact - Participate in technical discussions, tradeoff decisions, estimation, and planning - Contribute to improving development workflows and team velocity Engineering Quality - Write testable, maintainable, and well-documented code - Help maintain strong engineering standards while enabling fast delivery - Contribute to code reviews, technical design discussions, and knowledge sharing - Bring a product mindset to backend work, balancing user experience, performance, and reliability Preferred Qualifications - 5+ years of professional software engineering experience - Strong experience in Java and/or Python backend development - Experience working with multiple backend services, APIs, or distributed systems - Solid background in system integrations and data modeling - Experience integrating with SaaS platforms, internal systems, or third-party services - Familiarity with cloud environments, CI/CD pipelines, and modern development practices - Experience working in product-driven engineering teams - Exposure to fintech, wealth tech, or other data-intensive B2B SaaS products is a strong plus Nice to Have - Experience with microservices or service-oriented architectures - Experience with event-driven systems or asynchronous processing - Experience improving legacy systems or evolving platform architectures - Familiarity with observability tooling (logging, metrics, tracing) - Experience working in high-growth or scaling engineering environments Soft Skills - Strong problem-solving skills and sound technical judgment - Clear communicator who works effectively with both technical and non-technical stakeholders - Comfortable with ambiguity, changing priorities, and real delivery pressure - Ownership mindset with a bias toward action - Team-oriented and easy to work with in a remote environment Why This Role Matters This is an opportunity to join a meaningful engagement with: - Immediate, real-world delivery impact - A senior partner engineering team - Modern backend systems across multiple services - Clear ownership and technical influence - A product-focused engineering culture If this sounds like the kind of challenge you’re looking for, we’d love to hear from you.

• Orchestrate and influence multiple technical tracks on the team from the core query engine and performance infrastructure to API ergonomics and reliability tooling, ensuring they interlock into a coherent, world-class developer platform. • Champion the evolution of Viaduct’s global GraphQL schema: guide the multi-partner steering committee, strengthen governance processes, and drive a long-term vision that scales with Airbnb’s growing product surface and data-as-a-service strategy. • Act as a multiplier for senior talent on the team: mentor teammates, cultivate technical leadership across Viaduct sub-teams, and foster an environment where every engineer can drive impactful initiatives. • Serve as a key technical voice partnering with product, infrastructure, and leadership stakeholders to align Viaduct’s roadmap with Airbnb’s strategic objectives. • Shape how hundreds of engineers and external open-source adopters build, ship, and operate GraphQL services by advancing Viaduct Modern and defining the next wave of capabilities.

• Develop and maintain backend APIs and services using C# and ASP.NET Core; • Implement integrations with internal and external systems; • Work on database modeling and optimization; • Participate in technical discussions and contribute to architectural decisions; • Perform code reviews and collaborate on the team's technical growth; • Implement and maintain automated tests; • Assist in investigating and resolving production incidents; • Work closely with frontend, product and QA to deliver quality solutions;