Enterprise Orders API
Lead Backend Developer • 2026
Extracted legacy ecommerce order logic into a .NET pipeline with 57 tests, 13-warehouse allocation, and AS400-safe idempotency.
Technologies used
- C#
- Entity Framework Core
- SQL Server
- +5
- Software Dev
Gabriel Simao
Backend & Full-Stack Engineer · APIs, E-commerce, Fulfillment
4+ years shipping production backend systems, plus a published Steam title.
Recent work includes:
Open to full-time roles · United States · Global Remote
Tech Stack
Core technologies I work with
How I work with AI
AI-assisted for exploration and boilerplate. Architecture, code review, and production ownership stay mine.
Proof
This site's portfolio assistant runs on Cloudflare Workers AI, with rate limiting and an offline knowledge-base fallback.
Languages
C#JavaScriptNode.jsPHPPythonTypeScript
Frontend
Next.jsReactSvelte 5
Backend
ExpressIBM DB2PostgreSQLSQL Server
Infrastructure
DockerGitHub ActionsRedis
Ask the Portfolio Assistant
Recruiters and collaborators can get quick answers about Gabriel's experience, projects, and availability without leaving the page.
| Area | Detail |
|---|---|
| Web Dev | 4+ years |
| Focus | APIs & E-commerce |
| Shipped | Steam title + prod systems |
Common questions
Featured Projects
A selection of recent work
LLM Red Team Lab
Project Lead / AI Security Engineer • 2026
Interactive AI security lab scoring prompt-injection defenses with measurable block rates.
Technologies used
- Python
- FastAPI
- pytest
- +3
- Software Dev
Warehouse Consolidation System
Full Stack Developer • 2025
Smart warehouse routing system with UPS integration for optimal shipping
Technologies used
- PHP
- IBM DB2
- UPS API
- +4
- Software Dev