Sebastian Luchian
Backend-focused .NET Software Engineer building production APIs, e-commerce flows, SQL-backed business systems, and full-stack features when the product needs it.
Backend-first
C# · .NET · APIs · SQL
2022
Professional experience
.NET
Backend APIs & services
SQL
Data modeling & workflows
Full-stack
React, admin UI & product delivery
Now
Finishing my Embedded Systems master thesis.
Availability
Open to .NET Backend roles, with full-stack delivery when the product needs it.
Location
Remote or Iasi-based collaboration.
About
Backend-first, business-aware delivery.
I build .NET APIs, SQL-backed workflows, admin tools, and full-stack features when they help ship the product.
- Production-focused .NET backend developer with experience on live business systems.
- Comfortable debugging production issues, handling support-raised tickets, and separating user error from real defects.
- Hands-on with React from Figma designs and responsive adaptation when product delivery requires full-stack work.
Experience
Production-focused .NET work
.NET Software Engineer
Worked on production e-commerce/CMS platforms, backend services, SQL-backed data access, cache synchronization, React and legacy UI integrations, debugging, developer-on-duty support, legacy modernization, automation utilities, internal admin workflows, and selected cross-stack modernization work.
Production engineering
- Core contributor on BOTB, a live e-commerce/CMS platform with admin and customer-facing flows.
- Optimized cart and checkout-related backend logic, SQL data access, and cache synchronization.
- Debugged subscription and data consistency issues, including Redis cache state and discrepancies between web and mobile apps.
- Modernized legacy .NET modules by preserving business rules while reducing fragile code paths.
- Used Azure for production debugging and monitoring support, without owning infrastructure or DevOps responsibilities.
- Investigated production issues across backend, database, CMS, and frontend integration layers.
- Built backend functionality for authentication, authorization, workflows, audit history, reporting filters, and admin operations.
Delivery & business context
- Handled developer-on-duty tickets from customer support, triaged user error vs real defects, fixed valid issues, and discussed outcomes with managers.
- Built React features from Figma designs, including responsive desktop/mobile adaptations when only one breakpoint was provided.
- Delivered time-sensitive tasks and fixes under short deadlines while keeping business impact in mind.
Cross-stack work
- Created a Python crawler and Flask dashboard to collect, centralize, and prepare operational data for administrator-defined calculations.
- Worked for roughly six months on slots-related game logic using an in-house Python framework connected to a C++ logic engine/game server.
- Migrated Casaprima.ro from PHP 7 to PHP 8 and built a preference-based scoring system for real-estate offers.
- Supported a junior Java developer through technical discussions, implementation ideas, and debugging help.
- Worked briefly on an industrial automation collaboration for a manufacturing client, collecting PLC data and building AVEVA Wonderware views with Visual Basic and MS SQL.
Projects
Backend systems & business applications
Backend, database, CMS, admin, and customer-facing functionality for live e-commerce business flows.
Stable proof of concept built in roughly one month for a client demo still under discussion, covering authentication, authorization, audit logs, reporting, document flows, and admin operations.
Personal modular .NET web platform with separate admin, runtime, and web-facing APIs, EF Core persistence, and a Vite React/TypeScript admin frontend.
Secondary projects
Additional technical work
Smaller or more focused work that still shows range across automation, systems, migration, and mentoring.
Python automation split into a crawler and Flask dashboard, collecting and centralizing operational data so an administrator could perform business calculations.
Several months of work on slots-related game logic for a gaming platform, using an in-house Python framework connected to a C++ logic engine/game server.
Migrated Casaprima.ro from PHP 7 to PHP 8 and built an administrator-facing scoring system for real-estate offers based on client preferences.
Provided technical guidance to a junior developer working in Java over a roughly six-month period.
Short industrial automation collaboration for a manufacturing client, focused on PLC data collection, production data views, and operational metric calculations.
How I think about backend systems
From business rules to reliable backend operations
I focus on backend systems where correctness, maintainability, data consistency, and production debugging matter.
01
Product requirements
Business rules, support tickets, admin needs, edge cases
02
ASP.NET APIs
REST endpoints, validation, auth, role-based operations
03
Business Services
Cart, checkout, workflows, reporting, admin operations
04
Data Layer
SQL Server, PostgreSQL, EF, LINQ
05
Production feedback
Logs, Azure monitoring, debugging, support follow-up
Skills
Tech stack
Certifications
Certifications & learning
NVIDIA Deep Learning Institute
Education
Engineering foundation & languages
Gheorghe Asachi Technical University of Iasi
Gheorghe Asachi Technical University of Iasi
Communication level
Open to .NET Backend / Full-stack .NET roles, remote or Iași.