Job Description Your job will be to develop a part of a distributed system that serves the hospitality industry. The system consists of many domain-oriented microservices developed under a few cross-functional teams. You can bring a smile on the faces of thousands of people working in hotels across the globe. We are expanding our development capabilities by establishing a new backend development team in China to complement our existing European teams. As a Sub-Team Leader, you will lead this new China-based team of backend developers, working closely with our European teams to deliver innovative solutions for our hospitality clients. This role combines hands-on technical development with team leadership responsibilities, ensuring seamless collaboration across teams while accelerating our product delivery. Team Leadership Responsibilities Bridge communication between the China and European teams Serve as primary liaison between the China team and the main team in Europe Translate and clarify requirements, decisions, and technical guidance from the Europe team Coordinate cross-functional collaboration between the China team and QA, Infrastructure, and Product teams Communicate with the European stakeholders to ensure clear understanding of business requirements Team coordination and agile process management Coordinate daily activities of the China-based team members within existing sprint framework Organize and facilitate local Scrum/Agile ceremonies for the China team members (daily standups, sprint planning, retrospectives) Distribute work assignments based on established priorities and team capacity Monitor local team progress against established timelines and deadlines Ensure seamless integration of the China team’s deliverables with the European team’s work Track and report team performance metrics to the main team leadership Guide team adaptation to changing requirements, while ensuring code quality and delivery timelines are maintained Oversee implementation of continuous integration and deployment practices with automated testing and monitoring Lead sprint planning sessions by gathering effort estimates, and providing technical insights from the China team Local team mentoring and development Provide technical mentoring and guidance to the China-based team members Facilitate knowledge transfer from the Europe team to local developers Ensure the team members understand and follow established coding standards and practices Code quality enforcement within existing framework Conduct thorough code reviews in accordance with the established Europe team guidelines and standards Ensure adherence to existing coding standards, SOLID principles, and architectural patterns Validate proper implementation according to the Europe team standards Engage in technical discussions about implementation approaches and design decisions Technical Development Responsibilities Designing, implementing, and then maintaining new functionalities within a living system Designing scalable solutions within the existing microservices ecosystem Implement complex business logic for hotel management operations including reservations, billing, and reporting Building dedicated export solutions for third parties Design and implement robust API’s integration with for external hotel management systems Create data export mechanisms for property management systems, channel managers, and revenue management tools Develop file-based export solutions, supporting various formats (XML, JSON, CSV) Building a scalable aggregated data strategy for reporting purposes Design efficient data aggregation processes for hotel performance analytics and business intelligence Implement real-time and batch processing solutions for the large-scale hospitality data Create optimized data models for reporting on occupancy, revenue, and operational metrics Using advanced tools to optimize the performance of SQL queries used in APIs and reports Analyze and optimize complex PostgreSQL queries handling the large hospitality datasets Use database profiling tools to identify and resolve performance bottlenecks Optimize Entity Framework queries and implement efficient data access patterns Technologies used: C# 9, .NET Core - Latest C# features and modern .NET ecosystem JIRA & Confluence – Task management tool PostgreSQL - Advanced SQL features, JSON support, partitioning, and performance tuning Microservices - Service-oriented architecture, inter-service communication, and distributed system pattern Swagger - API documentation, testing, and client code generation Docker - Containerization, orchestration, and deployment strategies Redis - Caching, session management, and distributed data structures Kafka - Event streaming, message queuing, and asynchronous communication between services Elasticsearch (nice to have) - Full-text search, log aggregation, and analytics Visual Studio 2022, ReSharper, Rider - Professional development environment with advanced debugging and refactoring tools Qualifications Strong verbal and written English communication skills are required Ability to communicate complex technical concepts, to both technical and non-technical stakeholders Experience in writing clear technical documentation and API specifications Ability to collaborate effectively in international, distributed teams Minimum 3 years of experience in team leadership or a technical lead position and a minimum of 5 years of experience in the IT industry A proven track record in senior backend development roles with team management responsibilities Experience in leading technical teams, coordinating development activities, and managing project deliverables Knowledge of .NET 8/9 and Entity Framework Core Proficiency in the modern .NET ecosystem and ASP.NET Core development Advanced Entity Framework Core knowledge in migrations, query optimization, and performance tuning Proven experience with PostgreSQL Experience with the PostgreSQL-specific features like JSON/JSONB, arrays, and custom data types Knowledge of database performance tuning and query optimization strategies Open-minded and proactive mindset Willingness to learn new technologies and adapt to changing requirements Initiative in identifying and solving problems before they impact the team Collaborative approach to problem-solving and knowledge sharing Initiative in proposing and implementing process improvements 年龄要求：27岁以上 职能类别：技术经理

Job Description Your job will be to develop a part of a distributed system that serves the hospitality industry. The system consists of many domain-oriented microservices developed under a few cross-functional teams. You can bring a smile on the faces of thousands of people working in hotels across the globe. We are expanding our development capabilities by establishing a new backend development team in China to complement our existing European teams. As a Sub-Team Leader, you will lead this new China-based team of backend developers, working closely with our European teams to deliver innovative solutions for our hospitality clients. This role combines hands-on technical development with team leadership responsibilities, ensuring seamless collaboration across teams while accelerating our product delivery. Team Leadership Responsibilities Bridge communication between the China and European teams Serve as primary liaison between the China team and the main team in Europe Translate and clarify requirements, decisions, and technical guidance from the Europe team Coordinate cross-functional collaboration between the China team and QA, Infrastructure, and Product teams Communicate with the European stakeholders to ensure clear understanding of business requirements Team coordination and agile process management Coordinate daily activities of the China-based team members within existing sprint framework Organize and facilitate local Scrum/Agile ceremonies for the China team members (daily standups, sprint planning, retrospectives) Distribute work assignments based on established priorities and team capacity Monitor local team progress against established timelines and deadlines Ensure seamless integration of the China team’s deliverables with the European team’s work Track and report team performance metrics to the main team leadership Guide team adaptation to changing requirements, while ensuring code quality and delivery timelines are maintained Oversee implementation of continuous integration and deployment practices with automated testing and monitoring Lead sprint planning sessions by gathering effort estimates, and providing technical insights from the China team Local team mentoring and development Provide technical mentoring and guidance to the China-based team members Facilitate knowledge transfer from the Europe team to local developers Ensure the team members understand and follow established coding standards and practices Code quality enforcement within existing framework Conduct thorough code reviews in accordance with the established Europe team guidelines and standards Ensure adherence to existing coding standards, SOLID principles, and architectural patterns Validate proper implementation according to the Europe team standards Engage in technical discussions about implementation approaches and design decisions Technical Development Responsibilities Designing, implementing, and then maintaining new functionalities within a living system Designing scalable solutions within the existing microservices ecosystem Implement complex business logic for hotel management operations including reservations, billing, and reporting Building dedicated export solutions for third parties Design and implement robust API’s integration with for external hotel management systems Create data export mechanisms for property management systems, channel managers, and revenue management tools Develop file-based export solutions, supporting various formats (XML, JSON, CSV) Building a scalable aggregated data strategy for reporting purposes Design efficient data aggregation processes for hotel performance analytics and business intelligence Implement real-time and batch processing solutions for the large-scale hospitality data Create optimized data models for reporting on occupancy, revenue, and operational metrics Using advanced tools to optimize the performance of SQL queries used in APIs and reports Analyze and optimize complex PostgreSQL queries handling the large hospitality datasets Use database profiling tools to identify and resolve performance bottlenecks Optimize Entity Framework queries and implement efficient data access patterns Technologies used: C# 9, .NET Core - Latest C# features and modern .NET ecosystem JIRA & Confluence – Task management tool PostgreSQL - Advanced SQL features, JSON support, partitioning, and performance tuning Microservices - Service-oriented architecture, inter-service communication, and distributed system pattern Swagger - API documentation, testing, and client code generation Docker - Containerization, orchestration, and deployment strategies Redis - Caching, session management, and distributed data structures Kafka - Event streaming, message queuing, and asynchronous communication between services Elasticsearch (nice to have) - Full-text search, log aggregation, and analytics Visual Studio 2022, ReSharper, Rider - Professional development environment with advanced debugging and refactoring tools Qualifications Strong verbal and written English communication skills are required Ability to communicate complex technical concepts, to both technical and non-technical stakeholders Experience in writing clear technical documentation and API specifications Ability to collaborate effectively in international, distributed teams Minimum 3 years of experience in team leadership or a technical lead position and a minimum of 5 years of experience in the IT industry A proven track record in senior backend development roles with team management responsibilities Experience in leading technical teams, coordinating development activities, and managing project deliverables Knowledge of .NET 8/9 and Entity Framework Core Proficiency in the modern .NET ecosystem and ASP.NET Core development Advanced Entity Framework Core knowledge in migrations, query optimization, and performance tuning Proven experience with PostgreSQL Experience with the PostgreSQL-specific features like JSON/JSONB, arrays, and custom data types Knowledge of database performance tuning and query optimization strategies Open-minded and proactive mindset Willingness to learn new technologies and adapt to changing requirements Initiative in identifying and solving problems before they impact the team Collaborative approach to problem-solving and knowledge sharing Initiative in proposing and implementing process improvements 年龄要求：27岁以上 职能类别：技术经理

岗位职责： 1.      负责公司软件产品的推广和销售，完成公司既定的销售目标； 2.      负责维护客户关系，保持有效沟通和定期拜访，了解和梳理客户需求，制定解决方案； 3.      开发高星级酒店、连锁酒店、民宿集团等B端客户资源； 4.      精准识别客户数字化转型需求，提供定制化解决方案演示； 5.      跟进销售流程，完成合同谈判及售后服务衔接； 6.      收集行业竞品动态，反馈产品优化建议； 任职要求： 1.      具有2年以上软件销售经验者优先考虑。熟悉软件销售流程，包括从潜在客户开发、需求分析、产品演示、商务谈判到合同签订以及后续客户维护等环节。了解酒店软件行业的市场动态、竞争态势，能够根据市场变化及时调整销售策略。 2.      有酒店行业工作经验者为佳，业内有良好的人脉关系，熟悉酒店工作内容，特别是对酒店运营管理流程（如采购、人力资源、财务管理等）有深入了解的应聘者。 3.      具有出色的市场拓展能力，能够独立拓展业务，开拓客户资源。 4.      良好的心理素质，抗压能力强，可以经常出差。

Job Description Your job will be to develop a part of a distributed system that serves the hospitality industry. The system consists of many domain-oriented microservices developed under a few cross-functional teams. You can bring a smile on the faces of thousands of people working in hotels across the globe. 职位描述 我们的酒店管理解决方案由多个面向领域的微服务（domain-oriented microservices）组成，并由数个跨职能团队共同开发。您将参与开发面向酒店行业的分布式系统的一部分。该系统由多个面向领域的微服务组成，由若干跨职能团队共同开发。通过您的工作，您将为全球数以千计酒店员工的工作体验带来改善。 Key Areas of Responsibilities Designing, implementing and then maintaining new functionalities inside a living system Designing scalable solutions within existing microservices ecosystem using Domain-Driven Design principles Implement complex business logic for hotel management operations including reservations, billing, and reporting Ensure backward compatibility while evolving system architecture Design fault-tolerant components that handle high-volume hospitality data processing Collaborate with product teams to translate business requirements into technical specifications 主要职责范围 1. 系统功能的开发、实施与维护 运用领域驱动设计（Domain-Driven Design）的原则，在现有的微服务（microservice）生态系统中设计可扩展的解决方案。 实现复杂的酒店管理业务逻辑，包括预订、费用结算和报表功能。 在系统架构不断进化的过程中，确保其兼容性。 设计容错组件，以应对高吞吐量的数据处理任务。 与产品团队协作，将业务需求进行技术转化。 Building dedicated export solutions for 3rd parties Design and implement robust APIs for external hotel management systems integration Create data export mechanisms for property management systems, channel managers, and revenue management tools Implement secure authentication and authorization for B2B integrations Develop file-based export solutions supporting various formats (XML, JSON, CSV) Ensure data consistency and reliability in external data exchanges Manage API versioning and maintain backward compatibility for existing integrations 2. 为第三方构建专用的数据导出解决方案 为与酒店管理系统对接的第三方系统设计并实现稳健的 API 集成。 为酒店管理系统（PMS）、渠道管理系统（Channel Management）及收益管理工具创建数据导出机制。 为 B2B 集成实施安全的身份验证和授权机制。 开发支持多种格式（XML, JSON, CSV）的基于文件的导出解决方案。 确保外部数据交换的一致性和可靠性。 管理 API 版本控制，并维护现有集成兼容性。 Building scalable aggregated data strategy for analytical and reporting purposes Design efficient data aggregation pipelines for hotel performance analytics and business intelligence Implement real-time and batch processing solutions for large-scale hospitality data Create optimized data models for reporting on occupancy, revenue, and operational metrics Develop ETL processes that handle complex hotel data transformations Ensure data quality and consistency across multiple data sources Collaborate with data analysts to understand reporting requirements and optimize query performance 3. 为分析和报表目的构建可扩展的数据聚合策略 设计高效的数据聚合管道，用于酒店经营分析和商业智能（BI）。 对于酒店大数据场景设计实时和批处理解决方案。 创建针对入住率、收入和运营指标报表的优化数据模型。 开发处理复杂酒店数据转换的 ETL（抽取、转换、加载）流程。 确保来自多个数据源的数据质量和一致性。 与数据分析师协作，理解报表需求并优化查询性能。 Performing code reviews daily and participating in code review process Conduct thorough code reviews focusing on code quality, security, and performance Ensure adherence to coding standards, SOLID principles, and established architectural patterns Provide constructive feedback on implementation approaches and suggest improvements Review database queries for optimization opportunities and potential performance issues Validate proper error handling, logging, and monitoring implementation Submit well-documented pull/merge requests with clear descriptions and context Respond promptly to review feedback and implement suggested improvements Engage in technical discussions about implementation approaches and design decisions Follow established branching strategies and merge procedures Ensure all code changes include appropriate unit and integration tests Maintain high code coverage and quality metrics 4. 每日进行代码审查并参与评审流程 专注于代码质量、安全性和性能进行彻底的代码审查。 确保代码符合编码标准、SOLID 原则及既定的架构模式。 就实现方法提供富有建设性的反馈并提出改进建议。 审查数据库查询，寻找优化机会并发现潜在的性能问题。 验证错误处理、日志记录和监控功能的正确实施。 提交带有清晰描述和上下文的、文档齐全的拉取/合并请求（Pull/Merge Requests）。 及时响应审查反馈并落实改进建议。 参与关于实现方法和设计决策的技术讨论。 遵循既定的分支策略和合并流程。 确保所有代码变更都包含适当的单元测试和集成测试。 保持较高的代码覆盖率和质量。 Using advanced tools to optimize performance of SQL queries used in APIs and reports Analyze and optimize complex PostgreSQL queries handling large hospitality datasets Design efficient database indexes and partitioning strategies for time-series hotel data Implement query optimization techniques including proper join strategies and subquery optimization Use database profiling tools to identify and resolve performance bottlenecks Monitor query execution plans and implement caching strategies where appropriate Optimize Entity Framework queries and implement efficient data access patterns 5. 使用高级工具优化 API 和报表中 SQL 查询的性能 分析并优化处理大型酒店数据集的复杂 PostgreSQL 查询。 为时序酒店数据设计高效的数据库索引和分区策略。 实施查询优化技术，包括适当的连接（Join）策略和子查询优化。 使用数据库性能分析工具识别并解决性能瓶颈。 监控查询执行计划，并在适当情况下实施缓存策略。 优化 Entity Framework 查询并实施高效的数据访问模式。 Working in collaborative and iterative software development process with agile team Actively participate in Scrum ceremonies including daily standups, sprint planning, and retrospectives Collaborate effectively with cross-functional teams including QA, Infrastructure, and Product Team people Contribute to sprint planning by providing accurate effort estimates and technical insights Adapt to changing requirements while maintaining code quality and delivery timelines Practice continuous integration and deployment with automated testing and monitoring Participate in incident response and post-mortem analysis for production issues 6. 在敏捷开发的框架下进行协作式、迭代式的软件开发 积极参与例会、迭代规划和评审会议等。 与质量保证（QA）、产品构架以及产品团队等跨职能团队进行有效协作。 通过提供准确的工作量预估和技术洞察，参与迭代规划。 在保持代码质量和交付时间线的前提下，适应不断变化的需求。 通过自动化测试和监控实践持续集成与持续部署（CI/CD）。 参与生产环境问题的事件响应和事后分析（Post-mortem analysis）。 Technologies used: C# 9, .NET Core - Latest C# features and modern .NET ecosystem PostgreSQL (13+) - Advanced SQL features, JSON support, partitioning, and performance tuning Microservices - Service-oriented architecture, inter-service communication, and distributed system patterns Swagger - API documentation, testing, and client code generation Docker - Containerization, orchestration, and deployment strategies Redis - Caching, session management, and distributed data structures Kafka - Event streaming, message queuing, and asynchronous communication between services Elastic Search (nice to have) - Full-text search, log aggregation, and analytics Visual Studio 2022 / Resharper / Rider - Professional development environment with advanced debugging and refactoring tools 技术需求 C#9,.NET Core：使用较新的 C#特性和现代.NET 生态系统。 PostgreSQL：高级 SQL 特性、JSON 支持、分区及性能调优。 微服务：面向服务的架构、服务间通信及分布式系统模式。 Swagger：API 文档生成、测试及客户端代码生成。 Docker：容器化、编排及部署策略。 Redis：缓存、会话管理及分布式数据结构。 Kafka：事件流处理、消息队列及服务间的异步通信。 Elastic Search（加分项）：全文搜索、日志聚合及分析。 Visual Studio 2022 / Resharper / Rider：配备高级调试和重构工具的专业开发环境。 Qualifications Strong verbal and written communication skills in English are required Ability to communicate complex technical concepts to both technical and non-technical stakeholders Experience in writing clear technical documentation and API specifications Effective collaboration in international, distributed teams Being fluent in Object-Oriented and Functional Programming paradigms Deep understanding of OOP principles Experience with functional programming concepts in C# Knowledge of design patterns Knowledge of .NET 8/9, Entity Framework Proficiency in latest .NET features including minimal APIs, global using directives, and filescoped namespaces Advanced Entity Framework Core knowledge including migrations, query optimization, and performance tuning Experience with dependency injection, middleware, and ASP.NET Core pipeline Strong experience with PostgreSQL Advanced SQL skills including complex joins, window functions, and CTEs Database design and normalization principles Experience with PostgreSQL-specific features like JSON/JSONB, arrays, and custom data types Knowledge of database performance tuning and query optimization Good understanding and hands-on experience in database performance aspects Index design and optimization strategies Query execution plan analysis and optimization Database monitoring and performance metrics analysis Experience with connection pooling and transaction management Capability of writing clean code along with tests Test-driven development (TDD) and behavior-driven development (BDD) practices Unit testing, integration testing, and end-to-end testing strategies Code coverage analysis and quality metrics Clean code principles and SOLID design patterns Being an open-minded, proactive person Willingness to learn new technologies and adapt to changing requirements Initiative in identifying and solving problems before they impact the team Collaborative approach to problem-solving and knowledge sharing Proactive attitude and continuous improvement Self-motivated approach to professional development Regular participation in technical communities and staying updated with industry trends Initiative in proposing and implementing process improvements Minimum 3-year experience in similar position and minimum 5 years of experience in IT industry Proven track record in senior backend development roles Experience in leading technical initiatives and mentoring other developers Demonstrated ability to work with complex, distributed systems 任职要求 英语能力：要求具备流利的英语口语和书面沟通能力，能够向技术和非技术利益相 关者传达复杂的技术概念；具备撰写清晰的技术文档和 API 规范的经验；能有效地在国际化的分布式团队中协作。 编程范式：精通面向对象（OOP）和函数式编程（FP）范式，对 OOP 原则有深刻理 解，具备 C#函数式编程概念的经验，并掌握设计模式。 .NET 技术：具备.NET 8/9 和 Entity Framework 的扎实经验，精通.NET 特 性；高级 Entity Framework Core 知识（包括迁移、查询优化和性能调优）；具备依赖注入、中间件和 ASP.NET Core 管道的经验。 PostgreSQL：具备丰富的 PostgreSQL 实战经验，拥有高级 SQL 技能（包括复杂连接、窗口函数和 CTE）；掌握数据库设计和规范化原则；具备 PostgreSQL 特定功能 （如 JSON/JSONB、数组和自定义数据类型）的经验；拥有数据库性能调优和查询优化的知识。 数据库性能：具备编写代码及配套测试的能力，熟悉测试驱动开发（TDD）和行为驱动开发（BDD）实践；掌握单元测试、集成测试和端到端测试策略；了解代码覆盖率分析和质量指标；遵循整洁代码原则和 SOLID 设计模式。 软性素质：思维开放、积极主动，乐于学习新技术并适应变化的需求；能主动发现问题并在其影响团队前解决；乐于协作解决问题并分享知识；具备自我激励的职业发展态度，定期参与技术社区并紧跟行业趋势；能主动提出并实施流程改进方案。 工作经验：至少 3 年同类职位经验，且在 IT 行业拥有至少 5 年经验；在高级后端开发岗位上有可证实的业绩；具备领导技术项目并指导其他开发人员的经验；具备处理复杂分布式系统的能力。 Nice To Have Skills: Basics of Linux, Docker Linux command line proficiency and system administration basics Docker containerization, Docker Compose, and container orchestration Domain-Driven Design DDD concepts including bounded contexts, aggregates, and domain events Experience with CQRS and Event Sourcing patterns Command Query Responsibility Segregation implementation Event sourcing architecture and event store management Experience with event-driven architecture patterns Experience with distributed systems and web services Microservices communication patterns (synchronous and asynchronous) Distributed transaction management and eventual consistency Experience in AWS RDS PostgreSQL and other AWS database-related technologies is a plus AWS RDS configuration, monitoring, and optimization AWS database migration services and backup strategies CloudWatch monitoring and performance insights Experience in hospitality systems & familiarity with hospitality applications is a strong plus Understanding of hotel operations including reservations, check-in/check-out, and billing processes Knowledge of hospitality industry standards and integrations (PMS, CRS, GDS) Experience with hotel revenue management and reporting requirements Familiarity with hospitality-specific data models and business rules 加分技能（Nice To Have） Linux 与 Docker 基础：熟练使用 Linux 命令行及系统管理基础；具备 Docker 容器化、Docker Compose 及容器编排的经验。 领域驱动设计（DDD）：了解 DDD 概念，包括限界上下文（Bounded Contexts）、聚合（Aggregates）和领域事件（Domain Events）。 CQRS 与事件溯源模式：具备命令查询职责分离（CQRS）和事件溯源（Event Sourcing）架构及事件存储管理的经验。 分布式系统与 Web 服务：具备微服务通信模式（同步和异步）的经验；了解分布式事务管理和最终一致性。 AWS 技术：具备 AWS RDS PostgreSQL 及其他 AWS 数据库相关技术的经验者优先，包括 AWS RDS 配置、监控与优化；AWS 数据库迁移服务及备份策略；AWS CloudWatch 监控及性能洞察。 酒店系统经验：具备酒店系统经验并对酒店应用熟悉者将被视为极大的优势，包括了解酒店运营（预订、入住/退房、计费流程）；熟悉酒店行业标准及集成（PMS, CRS, GDS）；了解酒店收益管理和报表要求；熟悉酒店特定的数据模型和业务规则。 年龄要求：25岁以上 职能类别：.NET

Job Description Your job will be to develop a part of a distributed system that serves the hospitality industry. The system consists of many domain-oriented microservices developed under a few cross-functional teams. You can bring a smile on the faces of thousands of people working in hotels across the globe. 职位描述 我们的酒店管理解决方案由多个面向领域的微服务（domain-oriented microservices）组成，并由数个跨职能团队共同开发。您将参与开发面向酒店行业的分布式系统的一部分。该系统由多个面向领域的微服务组成，由若干跨职能团队共同开发。通过您的工作，您将为全球数以千计酒店员工的工作体验带来改善。 Key Areas of Responsibilities Designing, implementing and then maintaining new functionalities inside a living system Designing scalable solutions within existing microservices ecosystem using Domain-Driven Design principles Implement complex business logic for hotel management operations including reservations, billing, and reporting Ensure backward compatibility while evolving system architecture Design fault-tolerant components that handle high-volume hospitality data processing Collaborate with product teams to translate business requirements into technical specifications 主要职责范围 1. 系统功能的开发、实施与维护 运用领域驱动设计（Domain-Driven Design）的原则，在现有的微服务（microservice）生态系统中设计可扩展的解决方案。 实现复杂的酒店管理业务逻辑，包括预订、费用结算和报表功能。 在系统架构不断进化的过程中，确保其兼容性。 设计容错组件，以应对高吞吐量的数据处理任务。 与产品团队协作，将业务需求进行技术转化。 Building dedicated export solutions for 3rd parties Design and implement robust APIs for external hotel management systems integration Create data export mechanisms for property management systems, channel managers, and revenue management tools Implement secure authentication and authorization for B2B integrations Develop file-based export solutions supporting various formats (XML, JSON, CSV) Ensure data consistency and reliability in external data exchanges Manage API versioning and maintain backward compatibility for existing integrations 2. 为第三方构建专用的数据导出解决方案 为与酒店管理系统对接的第三方系统设计并实现稳健的 API 集成。 为酒店管理系统（PMS）、渠道管理系统（Channel Management）及收益管理工具创建数据导出机制。 为 B2B 集成实施安全的身份验证和授权机制。 开发支持多种格式（XML, JSON, CSV）的基于文件的导出解决方案。 确保外部数据交换的一致性和可靠性。 管理 API 版本控制，并维护现有集成兼容性。 Building scalable aggregated data strategy for analytical and reporting purposes Design efficient data aggregation pipelines for hotel performance analytics and business intelligence Implement real-time and batch processing solutions for large-scale hospitality data Create optimized data models for reporting on occupancy, revenue, and operational metrics Develop ETL processes that handle complex hotel data transformations Ensure data quality and consistency across multiple data sources Collaborate with data analysts to understand reporting requirements and optimize query performance 3. 为分析和报表目的构建可扩展的数据聚合策略 设计高效的数据聚合管道，用于酒店经营分析和商业智能（BI）。 对于酒店大数据场景设计实时和批处理解决方案。 创建针对入住率、收入和运营指标报表的优化数据模型。 开发处理复杂酒店数据转换的 ETL（抽取、转换、加载）流程。 确保来自多个数据源的数据质量和一致性。 与数据分析师协作，理解报表需求并优化查询性能。 Performing code reviews daily and participating in code review process Conduct thorough code reviews focusing on code quality, security, and performance Ensure adherence to coding standards, SOLID principles, and established architectural patterns Provide constructive feedback on implementation approaches and suggest improvements Review database queries for optimization opportunities and potential performance issues Validate proper error handling, logging, and monitoring implementation Submit well-documented pull/merge requests with clear descriptions and context Respond promptly to review feedback and implement suggested improvements Engage in technical discussions about implementation approaches and design decisions Follow established branching strategies and merge procedures Ensure all code changes include appropriate unit and integration tests Maintain high code coverage and quality metrics 4. 每日进行代码审查并参与评审流程 专注于代码质量、安全性和性能进行彻底的代码审查。 确保代码符合编码标准、SOLID 原则及既定的架构模式。 就实现方法提供富有建设性的反馈并提出改进建议。 审查数据库查询，寻找优化机会并发现潜在的性能问题。 验证错误处理、日志记录和监控功能的正确实施。 提交带有清晰描述和上下文的、文档齐全的拉取/合并请求（Pull/Merge Requests）。 及时响应审查反馈并落实改进建议。 参与关于实现方法和设计决策的技术讨论。 遵循既定的分支策略和合并流程。 确保所有代码变更都包含适当的单元测试和集成测试。 保持较高的代码覆盖率和质量。 Using advanced tools to optimize performance of SQL queries used in APIs and reports Analyze and optimize complex PostgreSQL queries handling large hospitality datasets Design efficient database indexes and partitioning strategies for time-series hotel data Implement query optimization techniques including proper join strategies and subquery optimization Use database profiling tools to identify and resolve performance bottlenecks Monitor query execution plans and implement caching strategies where appropriate Optimize Entity Framework queries and implement efficient data access patterns 5. 使用高级工具优化 API 和报表中 SQL 查询的性能 分析并优化处理大型酒店数据集的复杂 PostgreSQL 查询。 为时序酒店数据设计高效的数据库索引和分区策略。 实施查询优化技术，包括适当的连接（Join）策略和子查询优化。 使用数据库性能分析工具识别并解决性能瓶颈。 监控查询执行计划，并在适当情况下实施缓存策略。 优化 Entity Framework 查询并实施高效的数据访问模式。 Working in collaborative and iterative software development process with agile team Actively participate in Scrum ceremonies including daily standups, sprint planning, and retrospectives Collaborate effectively with cross-functional teams including QA, Infrastructure, and Product Team people Contribute to sprint planning by providing accurate effort estimates and technical insights Adapt to changing requirements while maintaining code quality and delivery timelines Practice continuous integration and deployment with automated testing and monitoring Participate in incident response and post-mortem analysis for production issues 6. 在敏捷开发的框架下进行协作式、迭代式的软件开发 积极参与例会、迭代规划和评审会议等。 与质量保证（QA）、产品构架以及产品团队等跨职能团队进行有效协作。 通过提供准确的工作量预估和技术洞察，参与迭代规划。 在保持代码质量和交付时间线的前提下，适应不断变化的需求。 通过自动化测试和监控实践持续集成与持续部署（CI/CD）。 参与生产环境问题的事件响应和事后分析（Post-mortem analysis）。 Technologies used: C# 9, .NET Core - Latest C# features and modern .NET ecosystem PostgreSQL (13+) - Advanced SQL features, JSON support, partitioning, and performance tuning Microservices - Service-oriented architecture, inter-service communication, and distributed system patterns Swagger - API documentation, testing, and client code generation Docker - Containerization, orchestration, and deployment strategies Redis - Caching, session management, and distributed data structures Kafka - Event streaming, message queuing, and asynchronous communication between services Elastic Search (nice to have) - Full-text search, log aggregation, and analytics Visual Studio 2022 / Resharper / Rider - Professional development environment with advanced debugging and refactoring tools 技术需求 C#9,.NET Core：使用较新的 C#特性和现代.NET 生态系统。 PostgreSQL：高级 SQL 特性、JSON 支持、分区及性能调优。 微服务：面向服务的架构、服务间通信及分布式系统模式。 Swagger：API 文档生成、测试及客户端代码生成。 Docker：容器化、编排及部署策略。 Redis：缓存、会话管理及分布式数据结构。 Kafka：事件流处理、消息队列及服务间的异步通信。 Elastic Search（加分项）：全文搜索、日志聚合及分析。 Visual Studio 2022 / Resharper / Rider：配备高级调试和重构工具的专业开发 环境。 Qualifications Strong verbal and written communication skills in English are required Ability to communicate complex technical concepts to both technical and non-technical stakeholders Experience in writing clear technical documentation and API specifications Effective collaboration in international, distributed teams Being fluent in Object-Oriented and Functional Programming paradigms Deep understanding of OOP principles Experience with functional programming concepts in C# Knowledge of design patterns Knowledge of .NET 8/9, Entity Framework Proficiency in latest .NET features including minimal APIs, global using directives, and filescoped namespaces Advanced Entity Framework Core knowledge including migrations, query optimization, and performance tuning Experience with dependency injection, middleware, and ASP.NET Core pipeline Strong experience with PostgreSQL Advanced SQL skills including complex joins, window functions, and CTEs Database design and normalization principles Experience with PostgreSQL-specific features like JSON/JSONB, arrays, and custom data types Knowledge of database performance tuning and query optimization Good understanding and hands-on experience in database performance aspects Index design and optimization strategies Query execution plan analysis and optimization Database monitoring and performance metrics analysis Experience with connection pooling and transaction management Capability of writing clean code along with tests Test-driven development (TDD) and behavior-driven development (BDD) practices Unit testing, integration testing, and end-to-end testing strategies Code coverage analysis and quality metrics Clean code principles and SOLID design patterns Being an open-minded, proactive person Willingness to learn new technologies and adapt to changing requirements Initiative in identifying and solving problems before they impact the team Collaborative approach to problem-solving and knowledge sharing Proactive attitude and continuous improvement Self-motivated approach to professional development Regular participation in technical communities and staying updated with industry trends Initiative in proposing and implementing process improvements Minimum 3-year experience in similar position and minimum 5 years of experience in IT industry Proven track record in senior backend development roles Experience in leading technical initiatives and mentoring other developers Demonstrated ability to work with complex, distributed systems 任职要求 英语能力：要求具备流利的英语口语和书面沟通能力，能够向技术和非技术利益相 关者传达复杂的技术概念；具备撰写清晰的技术文档和 API 规范的经验；能有效地在国际化的分布式团队中协作。 编程范式：精通面向对象（OOP）和函数式编程（FP）范式，对 OOP 原则有深刻理 解，具备 C#函数式编程概念的经验，并掌握设计模式。 .NET 技术：具备.NET 8/9 和 Entity Framework 的扎实经验，精通.NET 特 性；高级 Entity Framework Core 知识（包括迁移、查询优化和性能调优）；具备依赖注入、中间件和 ASP.NET Core 管道的经验。 PostgreSQL：具备丰富的 PostgreSQL 实战经验，拥有高级 SQL 技能（包括复杂连接、窗口函数和 CTE）；掌握数据库设计和规范化原则；具备 PostgreSQL 特定功能 （如 JSON/JSONB、数组和自定义数据类型）的经验；拥有数据库性能调优和查询优化的知识。 数据库性能：具备编写代码及配套测试的能力，熟悉测试驱动开发（TDD）和行为驱动开发（BDD）实践；掌握单元测试、集成测试和端到端测试策略；了解代码覆盖率分析和质量指标；遵循整洁代码原则和 SOLID 设计模式。 软性素质：思维开放、积极主动，乐于学习新技术并适应变化的需求；能主动发现问题并在其影响团队前解决；乐于协作解决问题并分享知识；具备自我激励的职业发展态度，定期参与技术社区并紧跟行业趋势；能主动提出并实施流程改进方案。 工作经验：至少 3 年同类职位经验，且在 IT 行业拥有至少 5 年经验；在高级后端开发岗位上有可证实的业绩；具备领导技术项目并指导其他开发人员的经验；具备处理复杂分布式系统的能力。 Nice To Have Skills: Basics of Linux, Docker Linux command line proficiency and system administration basics Docker containerization, Docker Compose, and container orchestration Domain-Driven Design DDD concepts including bounded contexts, aggregates, and domain events Experience with CQRS and Event Sourcing patterns Command Query Responsibility Segregation implementation Event sourcing architecture and event store management Experience with event-driven architecture patterns Experience with distributed systems and web services Microservices communication patterns (synchronous and asynchronous) Distributed transaction management and eventual consistency Experience in AWS RDS PostgreSQL and other AWS database-related technologies is a plus AWS RDS configuration, monitoring, and optimization AWS database migration services and backup strategies CloudWatch monitoring and performance insights Experience in hospitality systems & familiarity with hospitality applications is a strong plus Understanding of hotel operations including reservations, check-in/check-out, and billing processes Knowledge of hospitality industry standards and integrations (PMS, CRS, GDS) Experience with hotel revenue management and reporting requirements Familiarity with hospitality-specific data models and business rules 加分技能（Nice To Have） Linux 与 Docker 基础：熟练使用 Linux 命令行及系统管理基础；具备 Docker 容器化、Docker Compose 及容器编排的经验。 领域驱动设计（DDD）：了解 DDD 概念，包括限界上下文（Bounded Contexts）、聚合（Aggregates）和领域事件（Domain Events）。 CQRS 与事件溯源模式：具备命令查询职责分离（CQRS）和事件溯源（Event Sourcing）架构及事件存储管理的经验。 分布式系统与 Web 服务：具备微服务通信模式（同步和异步）的经验；了解分布式事务管理和最终一致性。 AWS 技术：具备 AWS RDS PostgreSQL 及其他 AWS 数据库相关技术的经验者优先，包括 AWS RDS 配置、监控与优化；AWS 数据库迁移服务及备份策略；AWS CloudWatch 监控及性能洞察。 酒店系统经验：具备酒店系统经验并对酒店应用熟悉者将被视为极大的优势，包括了解酒店运营（预订、入住/退房、计费流程）；熟悉酒店行业标准及集成（PMS, CRS, GDS）；了解酒店收益管理和报表要求；熟悉酒店特定的数据模型和业务规则。 年龄要求：25岁以上 职能类别：.NET

岗位职责： 1. 维护系统上线后与客户的关系，主动提供跟进服务。负责协调解决公司各类服务质量问题，以提升公司各类服务问题效率； 2. 负责对公司各类服务质量存在的隐患进行预警，以避免减少各类服务质量问题的发生； 3. 管理客户信息，定期组织客户关怀活动，收集客户经验，挖掘客户需求，维护客户关系； 4. 善于分析数据，并从阶段性数据中发现问题并及时调整； 5. 负责组织开展客户满意度调查活动，指导公司相关部门分析客户意度调查结果，并制定执行满意度提升计划，对计划执行进行监督、反馈、考核。 任职要求： 1. 大专及以上学历； 2. 具有酒店行业相关软件经验，包括酒店前台系统、财务系统、收益系统、餐饮系统等相关从业经验； 3. 有良好的英文书写以及表达能力优先； 4. 2年以上相关客户服务管理工作经验； 5. 优秀的客户服务意识，较强的协调沟通能力和亲和力； 6. 工作积极主动、责任心强，具有良好的团队合作意识； 7. 工作地点：上海。

工作地点：上海、北京、广州、南京、成都均可。（有地区相关工作经验，或熟悉当地客户者，在同等条件下将优先考虑。） 岗位职责： 1. 负责石基酒店管理系统（Cambridge PMS）的实施工作；根据客户需求完成系统部署、用户培训，并参与系统调研、演示、上线及维护； 2. 对接客户业务需求，提供专业解决方案，快速响应技术及相关问题，确保项目质量； 3. 按照规范和安排整理工作文档，及时反馈实施进度与问题； 4. 主动学习及定期参与产品学习及公司培训，提升专业技能； 5. 非项目实施期间，处理技术支持团队处理客户问题；完成公司安排的其他相关工作。 任职要求： 1. 酒店行业或云平台相关经验，熟悉前台、财务、收益等酒店系统业务流程；优秀的表达能力，英文和粤语流利者优先； 2. 大专及以上学历； 3. 能适应出差及弹性时间工作安排； 4. 沟通能力强，具备独立解决问题及团队协作能力。

公司简介：        南京银石科技有限公司是一家专注于为金融领域提供优质软件产品与服务的企业，尤其在银行客户软件系统领域有着深厚的积累和出色的口碑。作为国内线下金融支付业务的核心软件供应商，南京银石打通了商户收银系统与银行、第三方支付机构的交易通路，在国内银行收单业务中占据重要地位，市场占有率曾超过 80%。公司服务超 2500 家商户，凭借先进的技术、贴合银行需求的解决方案，我们与众多银行建立了长期稳定的合作关系，客户涵盖工商银行、农业银行等国有银行，以及交通银行、招商银行等商业银行，业务版图遍布全国，目前设有北京、上海、苏州等 8 个办事处。        如今，南京银石正凭借先进技术与优质服务，持续拓展金融软件市场。现因业务拓展需要，诚邀优秀人才加入，携手共创金融软件领域新辉煌。 岗位职责： 1. 负责公司产品在所在区域银行客户中的销售与市场推广，深入了解银行客户需求，制定针对性的推广策略，提升产品在银行客户中的认知度和使用率。 2. 全面负责所在区域项目投标、谈判、合同签订等工作，确保项目顺利推进，并积极催收款项，保障公司资金回笼。 3. 全力以赴完成公司下达的销售业绩指标，不断挑战自我，追求更高的销售成就。 4. 精心维护目标银行客户关系，定期拜访客户，及时掌握客户动态，解决客户在产品使用过程中遇到的问题，增强客户粘性。 任职要求： 1. 大专及以上学历，具备软件销售经验，熟悉软件销售的流程和技巧。 2. 拥有扎实的计算机软件基础，能够独立、清晰地介绍公司软件系统的功能、优势及应用场景。3. 具备较好的沟通能力，能准确理解客户需求并清晰表达公司产品价值；同时拥有较强的执行能力，确保各项销售工作高效推进。 4. 能够适应出差，以便更好地对接区域内的银行客户，开展销售业务。 5. 有银行客户软件系统销售经验者优先，熟悉银行客户的业务模式和采购流程者更佳。 工作地点：主要以上海、南京、北京、广州为主，可根据业务需求出差。 薪资福利： 1. 具有竞争力的薪资：底薪 6000-8000 元 + 销售提成。 2. 完善的福利体系： 五险一金：为你提供全面的社会保障，让你工作无后顾之忧。 带薪假期：包括年假、婚假、产假、陪产假等，平衡工作与生活。 节日福利：春节、端午、中秋等传统节日，送上贴心礼品与祝福。 员工培训：定期组织软件产品知识、银行客户销售技巧等专项培训，助力你提升专业能力。 其他福利：提供交通补贴、通讯补贴、出差补贴等，为你的工作提供便利支持。

公司简介：        南京银石科技有限公司是一家专注于为金融领域提供优质软件产品与服务的企业，尤其在银行客户软件系统领域有着深厚的积累和出色的口碑。作为国内线下金融支付业务的核心软件供应商，南京银石打通了商户收银系统与银行、第三方支付机构的交易通路，在国内银行收单业务中占据重要地位，市场占有率曾超过 80%。公司服务超 2500 家商户，凭借先进的技术、贴合银行需求的解决方案，我们与众多银行建立了长期稳定的合作关系，客户涵盖工商银行、农业银行等国有银行，以及交通银行、招商银行等商业银行，业务版图遍布全国，目前设有北京、上海、苏州等 8 个办事处。        如今，南京银石正凭借先进技术与优质服务，持续拓展金融软件市场。现因业务拓展需要，诚邀优秀人才加入，携手共创金融软件领域新辉煌。 岗位职责： 1. 负责公司产品在所在区域银行客户中的销售与市场推广，深入了解银行客户需求，制定针对性的推广策略，提升产品在银行客户中的认知度和使用率。 2. 全面负责所在区域项目投标、谈判、合同签订等工作，确保项目顺利推进，并积极催收款项，保障公司资金回笼。 3. 全力以赴完成公司下达的销售业绩指标，不断挑战自我，追求更高的销售成就。 4. 精心维护目标银行客户关系，定期拜访客户，及时掌握客户动态，解决客户在产品使用过程中遇到的问题，增强客户粘性。 任职要求： 1. 大专及以上学历，具备软件销售经验，熟悉软件销售的流程和技巧。 2. 拥有扎实的计算机软件基础，能够独立、清晰地介绍公司软件系统的功能、优势及应用场景。3. 具备较好的沟通能力，能准确理解客户需求并清晰表达公司产品价值；同时拥有较强的执行能力，确保各项销售工作高效推进。 4. 能够适应出差，以便更好地对接区域内的银行客户，开展销售业务。 5. 有银行客户软件系统销售经验者优先，熟悉银行客户的业务模式和采购流程者更佳。 工作地点：主要以上海、南京、北京、广州为主，可根据业务需求出差。 薪资福利： 1. 具有竞争力的薪资：底薪 6000-8000 元 + 销售提成。 2. 完善的福利体系： 五险一金：为你提供全面的社会保障，让你工作无后顾之忧。 带薪假期：包括年假、婚假、产假、陪产假等，平衡工作与生活。 节日福利：春节、端午、中秋等传统节日，送上贴心礼品与祝福。 员工培训：定期组织软件产品知识、银行客户销售技巧等专项培训，助力你提升专业能力。 其他福利：提供交通补贴、通讯补贴、出差补贴等，为你的工作提供便利支持。

公司简介：        南京银石科技有限公司是一家专注于为金融领域提供优质软件产品与服务的企业，尤其在银行客户软件系统领域有着深厚的积累和出色的口碑。作为国内线下金融支付业务的核心软件供应商，南京银石打通了商户收银系统与银行、第三方支付机构的交易通路，在国内银行收单业务中占据重要地位，市场占有率曾超过 80%。公司服务超 2500 家商户，凭借先进的技术、贴合银行需求的解决方案，我们与众多银行建立了长期稳定的合作关系，客户涵盖工商银行、农业银行等国有银行，以及交通银行、招商银行等商业银行，业务版图遍布全国，目前设有北京、上海、苏州等 8 个办事处。        如今，南京银石正凭借先进技术与优质服务，持续拓展金融软件市场。现因业务拓展需要，诚邀优秀人才加入，携手共创金融软件领域新辉煌。 岗位职责： 1. 负责公司产品在所在区域银行客户中的销售与市场推广，深入了解银行客户需求，制定针对性的推广策略，提升产品在银行客户中的认知度和使用率。 2. 全面负责所在区域项目投标、谈判、合同签订等工作，确保项目顺利推进，并积极催收款项，保障公司资金回笼。 3. 全力以赴完成公司下达的销售业绩指标，不断挑战自我，追求更高的销售成就。 4. 精心维护目标银行客户关系，定期拜访客户，及时掌握客户动态，解决客户在产品使用过程中遇到的问题，增强客户粘性。 任职要求： 1. 大专及以上学历，具备软件销售经验，熟悉软件销售的流程和技巧。 2. 拥有扎实的计算机软件基础，能够独立、清晰地介绍公司软件系统的功能、优势及应用场景。3. 具备较好的沟通能力，能准确理解客户需求并清晰表达公司产品价值；同时拥有较强的执行能力，确保各项销售工作高效推进。 4. 能够适应出差，以便更好地对接区域内的银行客户，开展销售业务。 5. 有银行客户软件系统销售经验者优先，熟悉银行客户的业务模式和采购流程者更佳。 工作地点：主要以上海、南京、北京、广州为主，可根据业务需求出差。 薪资福利： 1. 具有竞争力的薪资：底薪 6000-8000 元 + 销售提成。 2. 完善的福利体系： 五险一金：为你提供全面的社会保障，让你工作无后顾之忧。 带薪假期：包括年假、婚假、产假、陪产假等，平衡工作与生活。 节日福利：春节、端午、中秋等传统节日，送上贴心礼品与祝福。 员工培训：定期组织软件产品知识、银行客户销售技巧等专项培训，助力你提升专业能力。 其他福利：提供交通补贴、通讯补贴、出差补贴等，为你的工作提供便利支持。

职位描述： 根据公司的项目安排、相应的规范和技术要求，负责各软件系统的安装、设置和培训工作，帮助客户正确地使用系统及产品。 工作职责： 1. 在项目实施期间结合客户的需求，对软件进行部署并完成用户使用相关的培训； 2. 项目期间对任何涉及到的技术以及系统相关问题做出快速的响应和适宜的处理。保证项目实施质量； 3. 提供现场支持，保证系统正常运行； 4. 在非项目实施期间协助进行技术支持工作； 5. 按照规范及时完成各种项目文件，及时反馈项目情况； 6. 根据公司要求不定期的完成对新产品的学习和内部培训； 7. 掌握相关的业务知识，及时更新相关知识和技能； 8. 积极有效的协助客户解决问题，建立并保持良好的对客服务关系； 9. 根据公司安排，协助项目部参与各种项目实施相关的会议，负责可能的产品问题答疑； 10. 其它公司交予的任务和工作。 技能要求： 1. 具有本科及以上文化程度，酒店管理、旅游管理或相关专业； 2. 具有国际连锁管理酒店，一线对客服务岗位2年以上工作经验。熟悉酒店对客服务部门的工作及业务流程； 3. 英语四级以上，具备基本的口头交流能力以及较好的书面沟通能力。 任职要求： 1. 身体健康，能适应经常性的全国范围内出差； 2. 能够保持良好的工作积极性，具备较强的学习和自我提升的能力； 3. 偶尔需要休息日，节假日以及夜间加班； 4. 普通话标准，具备良好的语言表达能力； 5. 较强的沟通应变和适应能力，既能够独立工作也擅长团队协作。 工作城市：北京、上海、广州、成都、大连均可。

岗位职责： 1.负责POS收银机及周边设备的软硬件安装与维护； 2.负责日常门店和使用过程中产生的异常处理及服务器运维； 3.负责新需求增加新功能的配置和测试程序联调的相关工作； 4.协助维护POS周边后台系统的问题解决以及上级交办的其他工作。 岗位要求： 1.大专及以上学历，网络工程/信息技术/软件开发专业； 2.熟悉网络等弱电知识，精通微软操作系统与办公软件知识，具有丰富的软，硬件知识； 3.具有计算机及周边设备、微软Windows操作系统、Office的使用经验，熟悉打印、视频、音响设备、等弱电设备的维护； 4.积极主动，思路清晰，认真负责，具有较强的沟通能力及团队合作精神。 语言要求： 英语：书面普通阅读和书写，口语一般即可。 补充说明： 1.事先提供中英文双语简历； 2.将会安排远程面试和现场面试环节（包括口语对话）； 3.浦东迪士尼乐园办公室驻场（地铁交通）； 4.每周五天工作制5-9-6，不区分周六周日。