Skip to content
Gabriel GalánDevelopment
Let's talk

Development

Backend development built to last

Ruby on Rails, Python and Go for products that have to work today and stay easy to maintain tomorrow.

Book a demo See more

01 · What I build

What I build

  • Backends and APIs

    Applications and REST APIs with Ruby on Rails, Python (FastAPI) and Go, on PostgreSQL.

    • Ruby on Rails
    • Python
    • Go
    • PostgreSQL

  • Enterprise integrations

    Single sign-on with SAML, provisioning with SCIM, and OAuth, so you can sell to corporate customers.

    • SAML
    • SCIM
    • OAuth

  • AI inside your application

    Language models served on your own infrastructure and MCP connectors to your systems.

    • LLMs
    • MCP

  • Infrastructure and deployment

    Containers, continuous integration and deployment, monitoring and alerting.

    • Docker
    • Kubernetes
    • CI/CD
    • AWS

02 · Code that ships and gets tested

Code that ships and gets tested

  • 29 HFL releases published on PyPI
  • 5,600+ tests in HFL
  • 9 Rails engines in PlebisHub
  • 40 GitHub stars for omarchy-arm-utm

03 · How I work

How I work

  • Tests from day one, with coverage measured and enforced on every change.
  • Small, reviewable deliveries: there is always something working that you can try.
  • Security built in: dependency checks and static analysis in the workflow.
  • Everything stays in your repository, documented so your team can carry on without me.

04 · Recent work

Recent work

  • HFL

    Local Hugging Face model server

    Open source in Python with OpenAI, Ollama and Anthropic compatible APIs: 29 releases on PyPI, 5,600+ tests and a minimum of 90% coverage enforced in continuous integration.

    • Python
    • FastAPI
    • LLMs

    View on GitHub

  • PlebisHub

    Citizen participation platform

    Modernized from Rails 4.2 to Rails 8.1, with 12,400+ passing specs.

    • Ruby on Rails 8.1
    • RSpec

    View on GitHub

  • current-time-mcp

    Hardened remote MCP server

    Date and time tools over the Streamable HTTP transport, which can be added as a connector in Claude.

    • MCP
    • Python

    View on GitHub

  • omarchy-arm-utm

    Omarchy on Apple Silicon

    Native ARM64 Omarchy virtual machine for UTM (40 stars on GitHub).

    • Arch Linux ARM
    • UTM

    View on GitHub

About me

Gabriel Galán Pelayo

Senior Backend Developer & Technical Leader

30+ years in IT, 10+ of them building scalable backend systems. Expert in modernizing legacy applications, building high-performance APIs, and leading technical transformations. Specialized in Ruby on Rails, Python, and cloud-native architectures.

  • Madrid · on site or remote
  • Spanish native · English for international teams

Contact

Let's talk.

Tell me what you want to build or what needs integrating, and I'll propose how to approach it and on what timeline.

Book a demo Email me

ggalancs@gmail.com

In Madrid: I come to your company and give you the demo on site.

Outside Madrid or abroad: remotely, by video call.

LinkedIn GitHub