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elherzt/README.md

Hi there 👋

👋 Hi, I'm Jesús Romero

I'm a software developer with 11+ years of experience building applications using .NET, JavaScript, and modern frontend technologies, with a focus on React. I enjoy working across the full stack, from backend APIs to user interfaces, and I care about clean architecture, performance, and maintainability.

💼 What I Do

  • Develop scalable backend services using .NET (Core & Framework) and Entity Framework
  • Build modern UIs with React, React Native, and other frontend frameworks
  • Design and optimize relational databases using SQL Server, PostgreSQL, and similar tools
  • Create dashboards and BI solutions with DevExpress and related platforms
  • Script and automate with Python and use AI APIs for smart features
  • Work with Docker, CI/CD, and cloud deployment (Azure, GCP, Vercel, Render)

💡 I’m always open to learning new tools and technologies. I’m not tied to specific stacks — I'm passionate about learning.


🚀 My Tech Stack

Programming Languages

| C# | JavaScript | TypeScript | Python | SQL | HTML | CSS |

Tools & Technologies

Category Tools & Technologies
Backend & Frontend .NET (Core, Framework), React, React Native, FastAPI
Data & Analytics SQL Server, PostgreSQL, DevExpress BI, Power BI
API & Security REST APIs, WebSocket APIs, JWT, Net Core API
DevOps & CI/CD Git, GitHub, GitLab, GitHub Actions, Azure DevOps
Containerization Docker
Cloud & Hosting Azure, AWS, GCP
Other Integrations OpenAI API, Swagger / OpenAPI

🔧 Public Projects (Work in Progress)

These are active portfolio projects I'm developing in my free time. They are open-source, dockerized, and designed to demonstrate real-world architecture and best practices.

🔐 InSigna Authentication

Lightweight authentication library for .NET 8 backends. Handles password hashing, JWT generation, and centralized response handling with standardized error types. Built for minimal setup, clear onboarding, and reusable architecture.

Go to InSigna Authentication Repository.

🗳️ Invox Surveys

Face-to-face survey platform for internal research and fieldwork. Includes user roles, progress tracking, and automatic finalization of surveys.
Built with ASP.NET Core and React Native.

Go to Invox Surveys Repository.

📚 Invia Learn

A training content platform built with fullstack ASP.NET Core MVC. Admins can upload PDFs and videos, and logged-in users can view content and track usage reports.
Ideal for internal company training or onboarding.

🧠 Inverum Hub

A minimal Single Source of Truth (SSoT) service to support microservice or service-oriented architectures.
Pure .NET Core Web API, designed as a starting point for shared data and identity across systems.


🎯 Goals

  • Share clean and useful code that others can clone and run
  • Practice good software architecture and documentation
  • Show my skills and thinking as a developer through real projects

📫 Contact

I'm open to collaboration, feedback, and new opportunities.
Let’s build something great — check out my repos or connect with me! LinkedIn

Note:
My GitHub repositories appear sparse because I have over 10 years of professional experience working with private repositories on GitLab.
This public profile is a curated selection of personal and open projects.

Pinned Loading

  1. NodeProxyGeoServer NodeProxyGeoServer Public

    Basic node proxy for GeoServer

    JavaScript

  2. InWatch-Monitor InWatch-Monitor Public

    InWatch Monitor is a lightweight and modular service designed to track the status and availability of all your company’s websites, APIs, and servers from a single place.

    JavaScript

  3. InSigna InSigna Public

    InSigna is a lightweight C# class library for handling JWT and hashing operations. Designed as a foundational internal NuGet package, it provides a consistent and secure starting point for authenti…

    C#

  4. InvoxSurvey InvoxSurvey Public

    Face-to-face survey platform with roles, progress tracking, and auto-finalization. Built with ASP.NET Core and React. Ideal for internal research and campaign fieldwork.

    C# 1

  5. WsFeed WsFeed Public

    This project is a Web API built with .NET 8 to manage news feeds. A feed groups up to 5 topics, and users can register, authenticate via JWT, and manage their own feeds and topics. The API supports…

    C# 1 1