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Luis Alvarenga

Senior Full Stack Engineer

Ten years building software for the web, most of it on multi-tenant platforms where correctness and performance have to hold across very different customers. Currently at Bloom Growth, working across a .NET and GraphQL backend and a React interface.

l.alvarengav@gmail.com

Experience

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  1. Bloom Growth
    Remote — United States

    Full Stack Engineer — AI Systems

    Feb 2026 — Present
    • Build third-party integrations end to end — QuickBooks, HubSpot, Google Calendar and Microsoft Calendar — from the React and TypeScript interface down to the GraphQL services in the .NET backend.
    • Engineer the team's AI-assisted development capability, authoring MCP servers and reusable agent skills that query and generate domain data, and automating recurring engineering workflows.
    • Own continuous performance work across the platform, from GraphQL query shape down to database access patterns.

    Backend Engineer

    Nov 2024 — Feb 2026
    • Backend development for a multi-tenant platform at scale using .NET 8, NHibernate and MySQL.
    • Led schema refactors and domain modeling across core business entities.
    • Built and optimized GraphQL APIs with Hot Chocolate.
    • Diagnosed and resolved performance problems involving NHibernate, Envers auditing and large MySQL datasets.
    • Collaborated remotely with a United States based engineering team.
    • .NET 8
    • C#
    • GraphQL
    • Hot Chocolate
    • NHibernate
    • MySQL
    • React
    • TypeScript
    • MCP
  2. Contollo
    Remote

    Full Stack Web Developer

    Aug 2024 — Nov 2024
    • Built PS, a large-scale multi-tenant business automation platform whose core capability was letting client organizations compose workflows that automate their own operational processes.
    • Developed the NestJS backend and the Angular frontend, applying SOLID, CQRS and Domain-Driven Design to keep a shared-tenant architecture maintainable as it grew.
    • Modeled per-tenant data on Firestore, chosen for its tolerance of flexible, client-specific document shapes.
    • Built .NET Core integration APIs authenticating over OAuth against OpenAI for the platform's AI features, QuickBooks for accounting data, and DevExpress for report generation.
    • NestJS
    • Angular
    • TypeScript
    • Firestore
    • .NET Core
    • OAuth 2.0
    • OpenAI API
  3. SMBS Solutions
    Remote

    Full Stack Web Developer

    Oct 2020 — Apr 2024
    • Migrated a .NET Framework 4 application to .NET 5, separating frontend from backend and building a GraphQL API with Hot Chocolate, NHibernate, MySQL, Hangfire, Docker and Azure.
    • Built the frontend of that migrated application with Vite, React, TypeScript, Styled Components and MobX.
    • Redesigned the interface of a .NET Framework application using SASS, JavaScript, jQuery, SignalR and Razor MVC views.
    • Built a media-rich showcase site for audiovisual projects, consuming a REST API with React, SASS, Bootstrap, Axios and Redux.
    • Maintained and extended legacy PHP systems, adding modules and improving interface performance.
    • Developed custom WordPress themes and plugins, including one synchronizing WooCommerce products with client ERP systems to keep online and internal inventories consistent.
    • .NET
    • C#
    • React
    • TypeScript
    • GraphQL
    • Hot Chocolate
    • NHibernate
    • MySQL
    • Docker
    • Azure
    • PHP
    • WordPress
  4. OCVAL Nicaragua
    Managua, Nicaragua

    Web Developer

    Jan 2018 — Aug 2020
    • Delivered client websites focused on responsive layout and user experience, using HTML5, CSS, JavaScript, Bootstrap, SASS and Webpack.
    • Built custom PHP and Laravel backends over MySQL and REST APIs, covered by PHPUnit tests.
    • PHP
    • Laravel
    • MySQL
    • JavaScript
    • Bootstrap
    • SASS
    • Webpack
    • PHPUnit
  5. Hotel Los Pinos Managua
    Managua, Nicaragua

    Web Developer

    Jul 2016 — Dec 2017
    • Built the hotel's public website in PHP, HTML, CSS, JavaScript and Bootstrap.
    • Built an in-house occupancy management application so staff could handle reservations and room availability directly.
    • PHP
    • MySQL
    • JavaScript
    • Bootstrap

Selected work

02

Bloom Growth

Private product

A multi-tenant business operating system teams use to run meetings, goals and accountability. I work on its .NET and GraphQL backend and, more recently, across its React interface.

  • .NET 8
  • C#
  • GraphQL
  • Hot Chocolate
  • NHibernate
  • MySQL
  • React
  • TypeScript
  • MCP

PS

Private product

A multi-tenant platform that let client organizations compose and run automations for their own operational processes, with AI assistance built into the workflow.

  • NestJS
  • Angular
  • TypeScript
  • Firestore
  • .NET Core
  • OAuth 2.0
  • OpenAI API

Colchones JIRON

The online storefront for a mattress retailer, running on WordPress and WooCommerce with inventory kept in step with the client's ERP.

  • WordPress
  • WooCommerce
  • PHP
  • MySQL
  • JavaScript

Minimal Heroes

A showcase site for audiovisual projects, built to read like an editorial publication rather than a portfolio grid.

  • React
  • SASS
  • Bootstrap
  • Axios
  • Redux
  • REST
All projects →

Skills

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Backend
C# / .NET 8 · NestJS · PHP / Laravel · GraphQL (Hot Chocolate) · REST · CQRS · DDD
Frontend
React · TypeScript · Angular · Astro · Tailwind · SASS · MobX · Redux
Data
MySQL · SQL Server · Firestore · NHibernate · Entity Framework
Platform
Docker · Azure · AWS · Hangfire · SignalR · Git · CI/CD
AI engineering
MCP servers · Agent skills · LLM-assisted workflows

Recent writing

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