Role Description KabuK Style is building the next generation infrastructure for the global travel industry. We are looking for a Senior Backend Engineer, Travel Integrations & Distribution to help build the supplier connectivity, partner APIs, PMS/extranet backend capabilities, and distribution services that power KabuK Exchange. This role is ideal for an engineer who enjoys complex partner integrations, API normalization, booking flows, reliability, and solving messy real-world travel technology problems. You will play a key role in connecting KabuK Exchange with hotel suppliers, channel managers, wholesalers, B2C products, and B2B distribution partners. Team This role will likely sit within the Supply & Distribution Platform team. The team’s scope includes: - Supplier integrations - Channel manager integrations - Distributor APIs - PMS/extranet distribution controls - Availability and rate ingestion - Rate and availability normalization - Booking and reservation operational lifecycle - Partner API contracts - Distribution eligibility rules - Hotel onboarding technical flows What You'll Work On You will work on backend systems related to: - Supplier integrations - Channel manager integrations - Hotel inventory and availability flows - Rate and pricing input ingestion - Supplier API normalization - Distributor APIs - PMS and extranet distribution controls - Booking creation, modification, cancellation, and operational workflows - Error handling, retries, alerts, and integration monitoring - Integration documentation and partner-facing API behavior Responsibilities - Build and maintain backend integrations with travel suppliers, channel managers, and distribution partners. - Normalize inconsistent supplier APIs into stable internal platform models. - Design robust workflows for availability, rate ingestion, booking, modification, cancellation, and reconciliation handoff. - Handle edge cases around supplier errors, timeouts, inventory mismatches, booking ambiguity, and partner API inconsistencies. - Develop clean, well-documented APIs for internal services and external partners. - Work closely with product managers and business teams to understand partner requirements. - Collaborate with QA to build reliable integration test coverage. - Help define integration standards, API contracts, retry patterns, and operational playbooks. - Support production issue investigation and improve long-term platform resilience. - Contribute to backend architecture decisions for scalable travel distribution. - Review code and support engineering quality across internal and outsourced engineering teams. Requirements - 5+ years of backend engineering experience. - Strong experience building and maintaining production APIs or third-party integrations. - Experience with C# / .NET, or willingness to work with an existing .NET-based backend. - Strong understanding of REST APIs, JSON/XML payloads, authentication, error handling, and integration reliability. - Experience designing systems that interact with external partners, vendors, or platforms. - Strong debugging skills and comfort working through ambiguous integration issues. - Ability to reason clearly about data mapping, edge cases, retries, timeouts, monitoring, and operational resilience. - Ability to write clear technical documentation for internal and partner-facing use. - Comfortable working in a fast-moving, early-stage platform environment. - Conversational English ability. Preferred Experiences - Experience in travel technology, hospitality, OTA, hotel systems, channel managers, PMS, CRS, or booking platforms. - Experience with hotel supplier APIs, wholesaler APIs, distributor APIs, or channel manager integrations. - Experience with Go, Java, Kotlin, or other modern backend languages. - Experience with event-driven processing, queues, retries, and asynchronous workflows. - Experience with AWS or cloud-based production systems. - Experience working with outsourced or distributed engineering teams. - Japanese or Korean language ability.

Company Description Wise is a global technology company, building the best way to move and manage the world’s money. Min fees. Max ease. Full speed. Whether people and businesses are sending money to another country, spending abroad, or making and receiving international payments, Wise is on a mission to make their lives easier and save them money. As part of our team, you will be helping us create an entirely new network for the world's money. For everyone, everywhere. More about our mission and what we offer. Job Description We are looking for a Backend Engineer to join the Account Sharing team within Wise’s Consumer Squad. The team is focused on building entirely new products in the shared finances space for consumers — including international joint accounts and kid accounts. Our mission is to make it easy for families, couples, friends, and flatmates across different countries to manage money together seamlessly through Wise. Unlike most existing solutions that are limited to domestic markets, we are building shared financial experiences that work globally. This is a highly product-oriented engineering role where you’ll help shape products from the ground up. You’ll work closely with Product Managers, Designers, Data Analysts, and User Researchers to deeply understand customer problems and turn ambiguous ideas into scalable financial products used by millions of customers worldwide. How we work For everything we build, we keep our customers at the center of decision-making. We prioritize work based on customer research, behavioral data, and direct feedback, and we iterate quickly based on what we learn. The Account Sharing team operates as a highly collaborative, cross-functional product team. Engineers are not expected to simply implement tickets — they are expected to contribute to product direction, challenge assumptions, influence technical strategy, and help shape the customer experience. The environment is greenfield and fast-moving. Requirements evolve quickly, and engineers are encouraged to take ownership, drive discussions, and work closely with stakeholders across engineering, product, design, and research. At Wise, we believe in autonomous teams where everyone contributes ideas, takes ownership, and helps define priorities together. Impact Your work will directly shape the future of shared finances at Wise. You’ll help build products that allow families, couples, flatmates, and friends across different countries to manage money together in ways that existing financial products often cannot support today. The systems and experiences you build will need to scale globally, support millions of customers, and navigate the complexities of international compliance, regulation, and financial infrastructure. This role offers the opportunity to influence both technical architecture and product direction while helping Wise expand into a strategically important area of consumer finance. What will you be working on? Key focus areas for the team are: - Building international joint accounts for globally distributed users - Expanding Wise kid accounts into additional markets - Creating shared finance experiences that work across borders - Designing scalable backend systems for high-growth consumer products - Developing features around shared spending, sending/receiving money, and account customization - Collaborating on customer discovery and product iteration - Scaling infrastructure and improving reliability across multiple markets - Building greenfield financial products from concept to production You’ll also have opportunities to work across multiple areas of the Wise ecosystem, including: - Send/receive money flows - Spend experiences - Authorization systems - FinCrime-related systems - Shared account infrastructure What do you need? - You know how to build scalable distributed systems and deliver customer-facing products used by millions of users. - You are proficient in backend programming languages such as Java, Kotlin, Python, or Go. - You have strong experience designing asynchronous, reliable, and scalable systems within microservice architectures. - You are comfortable working in greenfield environments where requirements evolve rapidly and ambiguity is part of the process. - You have a strong product mindset and enjoy collaborating closely with Product Managers, Designers, Analysts, and Researchers to shape solutions — not just implement them. - You care deeply about customer experience and understand how technical decisions impact end users. - You are comfortable contributing to architectural discussions, challenging assumptions, and influencing technical and product direction. - You write clean, maintainable, well-tested code and care about long-term scalability and reliability. - You are a strong communicator who can explain complex technical concepts clearly and collaborate effectively across teams. - You are comfortable operating independently while also contributing to a collaborative team culture. Nice to have - Experience building greenfield products from scratch - Experience working on international consumer products - Experience with payments, financial systems, or compliance-heavy environments - Experience building systems at global scale - Familiarity with event-driven architecture and messaging systems such as Kafka - Experience with customer-facing financial products - API-first development experience Interested? Find out more: - How we work – a practical guide - DEI @ Wise - Wise Tech Stack (2025 update) - See what it's like to work at Wise London! - Our Engineering career map Wise Engineering – https://medium.com/wise-engineering What do we offer: - Starting salary: £87,500 - £145,000k + RSUs - Wise Benefits #LI-AB3 #LI-Hybrid Additional Information For everyone, everywhere. We're people building money without borders — without judgement or prejudice, too. We believe teams are strongest when they are diverse, equitable and inclusive. We're proud to have a truly international team, and we celebrate our differences. Inclusive teams help us live our values and make sure every Wiser feels respected, empowered to contribute towards our mission and able to progress in their careers. If you want to find out more about what it's like to work at Wise visit Wise.Jobs. Keep up to date with life at Wise by following us on LinkedIn and Instagram.

• Develop Front-End applications using Angular • Maintain and evolve existing systems by analyzing and debugging code with IDEs and browser DevTools (F12) • Develop and maintain REST APIs with .NET Core and Entity Framework • Apply software architecture best practices such as DDD (Domain-Driven Design), dependency injection, and unit testing • Work with messaging systems, primarily RabbitMQ, and alternatives such as SQS, SNS, or Kafka • Design and maintain distributed systems based on microservices • Monitor and diagnose applications using observability tools (e.g., DataDog, Azure Monitor, CloudWatch) • Use NoSQL databases such as MongoDB or DynamoDB • Participate in CI/CD pipelines to ensure continuous and secure deliveries • Work with containerization and orchestration technologies such as Docker and Kubernetes • Use cloud services (AWS, Azure, etc.), including serverless functions and messaging services • Collaborate on projects using Azure DevOps, including boards, pipelines, and repositories

• Develop and enhance backend applications using Java and the Spring Framework. • Create and maintain REST APIs and system integrations. • Work on analysis, development, and support of solutions for the financial sector. • Ensure delivery quality through development best practices and testing. • Contribute to technical decisions and collaborate with an agile, engaged, results-focused team.