Hao Zuo
Developer with 14+ years of full-stack . NET/Web experience. Specializing in complex enterprise systems. With experience to cross-team collaboration, with product/business, and global teams to deliver high-quality software solutions.
Experience
Sr. Software Engineer
Tesla
Shanghai, China
Responsible for full-stack development and maintenance of Tesla’s HR systems, covering Performance/ Employee Master Data/ Attendance/ Payroll/ Recruiting/ Talent/ Team Management and Learning modules. Contributed significantly to HR platform localization in China. Contributed to the APAC localization of the ATS (Applicant Tracking System), handling the majority of localization requirements across the region. This included Offer/ Headcount/ Requisition workflow, Onboarder tracking, Offer issuance, signature status tracking, integration with third-party eSign vendors. Designed and implemented a China-localized onboarding platform tailored to local candidate preferences, covering the full onboarding journey (guide, document, information collection, medical & background checks, etc.), improving candidate experience and HR operational efficiency.
Developed a comprehensive offboarding module and console to support multiple departments including HRBP, HROps, management, Info Sec, security, asset, insurance, and housing fund processes. Handled complex integrations between the HR system and various internal business systems, handling multiple protocols (HTTP, Kafka, Message Queues) and authentication methods (SSO, Static Token, Basic Auth), while applying appropriate encryption strategies based on data sensitivity. Worked on the migration and performance optimization of the Sales Bonus Calculation module from NA to China. Redesigned complex multi-dimensional business logic, reducing the calculation time from over 10 days to 1.5 hours, significantly improving sales bonus settlement efficiency. Contributed to the development and containerization of a Contract Lifecycle Management (CLM) platform that supports the HR system.
Successfully migrated a compute-intensive PDF contract generation module (previously Windows-based with COM+ components) to Kubernetes, supporting auto-scaling and improved stability. Contributed to the development of the AI Sourcing tool, leverage LLM for automated resume filter and intelligent screening, providing AI-powered support for the recruiting process. Actively leveraged AI-assisted tools such as Claude Code, Cursor, and Copilot to improved development and cooperation efficiency.
.NET Web Developer
Wendy Wu Tours
Xi'an, China
Focus on development of a serial project related to tourism services, including enterprise portal (CMS), online booking system (B2C & B2B), reservation/operations system (Backoffice) and supplier API services. Deeply covered whole business work-flow. Implement the abstract model of every business section, design/develop/deploy each module of the system. Leading and build up APM (Application Performance Monitor) tracking component. Leading and build up ELK system log component.
Leading and build up E2E automation test infrastructure and test cases for the product. Propose to import MVVM (Vue. js) and improve front-end componentization and modularization, lead front-end modernization reform. Responsible for design/develop business notification (Email, Sms) module. Responsible for developing/maintain payment (Realex Payments) module.
.NET Web Developer
Steady Rain
Xi'an, China
Developed e-commerce, CMS, and ERP modules based on the Dot Net Nuke (DNN) CMS platform, covering the full lifecycle of module development. Backend primarily used ASP. NET MVC/Web Forms + EF; frontend based on jQuery + Knockout. js. Deeply integrated with the DNN Skin/Containers system to achieve customized module UI.
Implemented multi-language localization support for modules to adapt to global deployment scenarios; integrated third-party payment, ERP, and other external APIs. Responsible for module installation package building and version management, ensuring plug-and-play productized delivery.
QA Team Leader/SDET
Chinasoft International
Xi'an, China
Joined the Microsoft Developer Division (Dev Div), participating in the Visual Studio IDE project. Handled test development work based on Visual Studio IDE, building automated testing frameworks and automated test case systems. Supported the extend and maintenance of the automated testing system, improving IDE functional regression testing efficiency and coverage.
Responsible for tech management and coordination of the IDE Experience team, organizing team members to achieve iteration goals. Regular sync with client (Microsoft) team, clarify tech spec and requirements, synchronizing progress, and drive cross-team collaboration. Provided toolchain support for Visual Studio IDE testing, ensuring product delivery quality.
SDET
HiSoft (International) Ltd
Wuxi, China
Joined the Adobe Acrobat XI Globalization and Localization automation QA work. Joined Citrix “Xen App”, “Xen Server”, “Online plug-in”, “Receiver” etc.. projects functionality and integration testing.
Education
Xi'an Jiaotong University
Bachelor
Northwest University
Diploma
Skills
JavaScript (ES6+)Node.jsWebAssemblyVueAngularKnockoutC#.NET CoreDot Net NukeGitWeb ApiWebSocketgRPCGraphQLSQLNo (RedisMongoDBElasticsearch)ORM (EFDapper)JenkinsDockerk8sNginx
Primary Project Experience
HROS (Tesla)
Key Dev
HROS is Tesla’s core HR System serving all HR business requirement. Contributed to full-stack development and iterative enhancements across multiple HR modules, especially on localization requirements for various APAC countries and regions. Serves as L3 technical support, handling production incident troubleshooting, root cause analysis, and resolution to ensure high system availability and business continuity.
Facilitated cross-team integration and collaboration, enabling seamless connectivity between HROS and various internal business systems. Supported team growth by mentoring new members and assisting with technical onboarding and knowledge sharing. TechStack: ASP.NET Core, Angular, MongoDB, Dapper, RabbitMQ, Kafka, Elasticsearch, Kubernetes.
Workbench (Tesla)
Key Dev/Owner
Serves as a core developer for the company-wide workflow platform (Workbench/CMT), built with Golang. Designed and implemented dynamic forms and flexible approval processes through JSON configuration. Supported workflow requirements across China, powering 300+ workflows for over 20 different business teams (continuously growing), covering key areas including Order, Legal, Fleet, Finance, HR, Service, Delivery, and Store Ops.
Led the initiative for the IT team to deeply dogfooding the Workbench, managing internal workflows such as system release approvals, production incident tracking, and account management. Provided direct user-perspective feedback on usability, stability, and overall system quality. Optimized the performance and stability of the workflow engine, significantly reducing development and maintenance costs for internal approval processes across the organization.
Handled upstream and downstream integration with multiple business systems. Independently implemented email-based approvals and leveraged large language models to enable intelligent Teams notifications, approvals, case status tracking, and business query resolution. TechStack: Golang, Handlebars
Wendy Wu Tours-Qin Travel Management System
Developer
Product Link: https://www.wendywutours.co.uk/ This product is a system integrated by multiple projects, it mainly force on client and agent bookings system (B2C & B2B), internal reservation/operations system (Backoffice), etc.. The business covered is: orders/products/routing/finance/reporting/notification/suppliers/agents/logic rule and admin/user and permission, etc..
According to each project's situation, each module has their own technology stack, and community each other with SOA. Part of the tech stack invoked: .NET Core MVC, Vue.js, Redis, MongoDB, PostgreSQL, DDD, EF, Dapper and other modern internal development tech.
VDSPatient Appointment System
Developer
Product Link: https://www.vincentsdentalsurgery.com/ VDS (Vincent Dental Surgery - 偉信牙科醫室) Patient appointment and doctor work schedule management system. Include a portal site and backend management for post, webpage content.
Key technical covered in this project are ASP.NET MVC, DotNetNuke, EF, MQ, Knockout, JQuery-UI and etc... Responsible for full site framework build, backend and front-end development, requirement communicate, deployment, and code migration script.
Marketing Management Suite
ASP.NET Developer
This is an MIS project develop by ASP.NET MVC, help marketing and IT people to manage/review/report their data, use Bootstrap, REST API, NInject, EF, etc... most features of this product are: *Management information of Domain/DNS/Third-party Services/Url/Page/Keyword/SEO/Offer for Enterprise and Organization; *Site Management (SSL, Web Hosting, Data Hosting, Proxy, Authentication and etc..); *Marketing activities and advertisement info management; Handle every part and module of product requirement communications, business and UI logic implement, framework and code structure adjust and optimization.
Microsoft Visual Studio IDE
SDET II, SDET Leader
Drive Microsoft VS IDE automation testing work as a SE DT leader of Extensibility and IDE Experience QA team. Responsible for analysis product features, design automation test case, maintain test framework and related interface of product.
Responsible for code automation testing script, bug handle and analysis. Manage team daily regular work, communicate with and report to client (MS), team member workload balance and task tracking.
Adobe Acrobat XI
SDET
A PDF reader and editor published by Adobe. Work for Acrobat and Reader. Handle localization/functionality/performance test case coding. Related products: Adobe Acrobat XI & Adobe Reader XI
Citrix Online Plug-in for XenApp
Tester
Citrix XenApp and Online Plugin integration and compatibility testing. Related Windows group policy integration testing. Related products: Citrix Online Plug-in 12.3, XenApp 6.5, XenDesktop 5
Self Description
Results-driven developer with full-stack .NET development experience. Proven track record in designing, developing, and maintaining large-scale enterprise applications. Strong ownership, excellent problem-solving and troubleshooting skills, with deep experience in system integration, performance optimization, and cloud-native practices.
Keenly sensitive to emerging technical trends and advancements in AI, with a broad technical vision. Passionate about technology, actively participate in both online and offline tech communities, and enjoy sharing knowledge while continuously exploring new tools and solutions.