# MarsBased — Full profile

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Last updated: 2026-10-15T06:10:43Z

This is the long-form companion to https://marsbased.com/llms.txt.
For any page, append `.md` to its URL for a clean Markdown version
(e.g. https://marsbased.com/services/ruby-on-rails.md).

MarsBased is your indispensable engineering team: a senior software consultancy founded
in 2014 and based in Barcelona, Spain.
We build complex web applications, platforms, and SaaS products for CTOs and technical
decision-makers at startups, scaleups, and enterprise companies worldwide.

We are not a generic agency. We are an engineering-first boutique with a fully remote,
senior-only team. We do not do branding, marketing, or low-budget websites.

## What we do

- Web application development (Ruby on Rails, Python, TypeScript/React/Angular/Node, Shopify)
- AI-augmented development: we integrate AI into the development workflow itself,
  not just into the products we build
- AI engineering: AI features in production applications, Model Context Protocol (MCP)
  server development, and hands-on AI-tooling training for engineering teams
- Technical audits and code review for companies inheriting AI-generated codebases
- Rescue projects: we take over failing or stalled software projects
- Sprint Zero and MVP development: discovery, scoping and architecture first, then build and launch
- Product design, UI/UX design, and data-visualisation interfaces
- Cross-platform mobile app development
- Security engineering: cybersecurity assessments and NIS2 compliance
- Enterprise delivery: dedicated teams, procurement and security onboarding,
  incident response and escalation
- Long-term engineering partnerships with CTOs managing complex platforms

## Our methodology

We have spent over a year building and refining an AI-augmented development methodology
internally. Every engineer at MarsBased works the same way: using AI tooling (Claude Code,
among others) within a structured Research-Plan-Implement workflow. This is not
experimental. It is our standard operating procedure.

This means we can deliver at higher speed without sacrificing code quality or architectural
soundness — the two things AI-generated code most commonly sacrifices.

## Who we work with

Our clients are technical decision-makers — CTOs, VPs of Engineering, founders with
engineering backgrounds — who have been burned by mercenary teams, offshore shops, or
AI-generated code that looked fine until it didn't.

Clients have included: FC Barcelona, Real Madrid, Rakuten TV, Vueling, Citadel Securities,
HP, Moody's, Boston Consulting Group, Holafly, Ford, Haufe, NTT Data, Orange,
Mobile World Capital, Startup Genome, Decidim Barcelona.

We are an approved vendor for HP, Moody's, FC Barcelona, NTT Data, BCG, Orange,
Citadel Securities, Haufe and Ford, among others.

We maintain decade-long relationships with several clients across multiple CTO transitions.
That is the metric we are most proud of.

## What we do not do

- Model training or fine-tuning
- Gambling or betting platforms
- Body-shopping

## Stack

Primary: Ruby on Rails, TypeScript/React, Python, Shopify
Infrastructure: AWS, Google Cloud, Azure, Vercel
AI tooling: Claude, Claude Code, MCP servers, n8n

## Location and model

Barcelona, Spain. 100% remote team. Clients across Europe, North America, and globally.
Founded 2014. ~25 engineers, all senior.

## Contact

Website: https://marsbased.com
Hire us: https://marsbased.com/hire-us
FAQ: https://marsbased.com/faq
Enterprise delivery: https://marsbased.com/sector/enterprise
Blog: https://marsbased.com/blog
Community (podcast, events, newsletter): https://marsbased.com/company/community
Handbook: https://github.com/MarsBased/handbook