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Project case study

Production E-commerce Platform

Live e-commerce/CMS platform

.NETSQL ServerReactUmbracoCMS
Summary

Quick overview

Backend, database, CMS, admin, and customer-facing functionality for live e-commerce business flows.

Professional or private work. Details are summarized without exposing internal code, client data, or proprietary implementation details. Screenshots or private demo can be shared on request when available.

Problem

What needed to be solved

Worked as a core contributor on BOTB, a production e-commerce/CMS platform where stability, correctness, and business continuity mattered.
Implementation

What I worked on

Contributed across backend services, SQL-backed data access, CMS/admin functionality, React features from Figma designs, legacy UI maintenance, debugging, production fixes, and developer-on-duty support.
Technical decisions

Responsibilities, systems, and engineering trade-offs

  • Cart and checkout backend flows
  • SQL-backed data access and Entity Framework mappings
  • Redis cache and synchronization issue investigation
  • Subscription-state debugging, including cache cases where a newly created subscription stayed inactive for around 30 minutes
  • Data discrepancy investigation between web and mobile applications
  • React features built from Figma designs, including responsive adaptation when only mobile or desktop designs were provided
  • Legacy AngularJS, jQuery, Razor, and CMS-backed interface maintenance
  • Legacy .NET modernization and fragile code path refactoring
  • Developer-on-duty ticket handling with customer support: triage user error vs real defects, fix valid issues, and follow up with managers
  • Production debugging using logs, database inspection, and request-level analysis
  • Azure monitoring and debugging support without owning DevOps responsibilities
  • Time-sensitive feature delivery and production fixes under short business deadlines
Result

Result and value

Improved maintainability, reduced regression risk, supported business-critical production flows, and helped keep support-to-development feedback loops practical.
What I learned

Practical takeaway

Production work rewards careful debugging, small safe changes, and clear communication between support, developers, and managers.
© 2026 Sebastian Luchian