
Maciej Wester contributed to the mercurjs/mercur repository by building core backend features and improving notification reliability over a two-month period. He developed a privacy-preserving Stock Location API and a modular Wishlist backend, both using TypeScript and JavaScript, to enhance customer journeys and data segmentation. Maciej also strengthened the event-driven notification system, adding admin alerts and refining customer and order notifications, while addressing configuration and template issues. His technical approach emphasized modular API design, robust parameter validation, and code refactoring, resulting in improved reliability, maintainability, and scalability of seller workflows. The work demonstrated depth in backend development and workflow orchestration.
May 2025: Delivered core features that enhance customer journeys, strengthened notification reliability, and improved code quality. Key features delivered include a Stock Location API (seller-filtered view) to expose stock locations while excluding seller data, a Wishlist Backend Module with add/remove APIs and workflows, and a strengthened Notification System with admin alerts for seller requests/invites and comprehensive customer/order notifications, along with provider configuration fixes. Major bug fixes included notification template corrections and medusa-config/doc alignment, improving reliability and developer experience. Overall impact: improved data privacy and segmentation, smoother user journeys, reduced operational risk, and a scalable foundation for seller workflows. Technologies demonstrated: REST API design, backend modularization, event-driven notifications, TypeScript/JavaScript, and code quality/refactor practices.
May 2025: Delivered core features that enhance customer journeys, strengthened notification reliability, and improved code quality. Key features delivered include a Stock Location API (seller-filtered view) to expose stock locations while excluding seller data, a Wishlist Backend Module with add/remove APIs and workflows, and a strengthened Notification System with admin alerts for seller requests/invites and comprehensive customer/order notifications, along with provider configuration fixes. Major bug fixes included notification template corrections and medusa-config/doc alignment, improving reliability and developer experience. Overall impact: improved data privacy and segmentation, smoother user journeys, reduced operational risk, and a scalable foundation for seller workflows. Technologies demonstrated: REST API design, backend modularization, event-driven notifications, TypeScript/JavaScript, and code quality/refactor practices.
April 2025: Stabilized the shipping options fetch in mercur by fixing the unrecognized limit parameter and implementing a generalized parameter handling flow. Refactored parameter validation/creation to use a new createFindParams utility, improving reliability of shipping option retrieval and overall checkout experience.
April 2025: Stabilized the shipping options fetch in mercur by fixing the unrecognized limit parameter and implementing a generalized parameter handling flow. Refactored parameter validation/creation to use a new createFindParams utility, improving reliability of shipping option retrieval and overall checkout experience.

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