Zorig Ganbold

Migrated legacy SOAP/XML endpoints to a documented RESTful API, redesigning request/response contracts and reducing integration effort for downstream consumers. Profiled and optimized slow database queries and schema access patterns, improving response times on the heaviest reporting endpoints. Upgraded a deprecated backend CMS to the latest stable major version and executed a full data migration path without loss of production content. Designed and delivered a custom project-management web application end to end, from data model and API through the React front end. Built a WebRTC-based online meeting application including signalling, session handling, and media state management. Delivered backend services and APIs powering a client mobile application, plus third-party API and payment/service integrations. Worked directly with client stakeholders in small delivery teams for scoping, estimating, and making architecture decisions with no intermediate layer.

Implemented multi-language support to ease usage for non-English users. Improved customer and community engagement by adding Twitter and Discord integration. Added CI/CD and end-to-end testing to ensure functionality. Integrated third-party services and enhanced SEO performance; updated landing page design.

Led the development of Xyyp Play as a Single Page Application using ReactJS from the ground up. Implemented automated unit tests and end-to-end tests with React Testing Library and Cypress. Maintained CI/CD for standardized code styling and linting (ESLint, flake8). Built backend core modules and integrated with bank and third-party payment systems using Python and Django. Designed and developed GraphQL schema and resolvers with Ariadne to streamline data fetching.