Javier Rotllant

Strategy consultant turned entrepreneur. Not a software engineer: just someone looking for better ways to solve business and day-to-day challenges.

Industrial engineer and business graduate, with 13 years in strategy consulting, 9 of them at Bain & Company. Then I left to build. Today I work across several businesses at once, from Barcelona, and use AI in all of them, every day.

Javier RotllantFounder of EIDARALinkedIn →
javier-rotllantExample

About the author

  • 13 years in strategy consulting, 9 at Bain & Company.Claude · May
  • Works across several businesses at once.DeepSeek · Oct
  • Re-explains his context at the start of every AI chat.replaced Claude · May
  • Starts AI chats from DARA. Nothing to re-explain.Claude · today

Example: this page, as DARA would keep it. One line per fact, with who saved it and when.

Why I built DARA

I spent ten to fifteen minutes at the start of every AI conversation explaining my context, and always forgot something. I tried the usual answers, and each one broke down. The hardest lesson for a Bain alumnus: letting go of MECE.

That's how I think, but not how I remember.

DARA organises what it knows for its reader: an AI, not a person browsing folders.

From consulting to DARA

The short version. The long one is in the story.

  1. 13 years

    Strategy consulting

    9 of them at Bain & Company.

  2. Then

    Several businesses at once

    AI becomes part of every day's work.

  3. May 2026

    The first DARA

    One memory for my AIs, on my computer.

  4. July

    Another AI joins

    A second company's AI writes in it. In October, a third.

  5. October

    The whitepaper

    What DARA is, and what doesn't work yet. Read it →

  6. Next

    Memory tests

    Then, the best way to bring DARA to more people. What's next →

How I work on it

Three rules I hold myself to.

  • Build something useful

    Built to solve a daily problem, not as a product. If it helps others, even better.

  • Share it honestly

    What doesn't work yet is said, not hidden: one user, one computer, nothing to install yet.

  • Measure before claiming

    Every figure about DARA comes from my real installation. Reds included.

Want to know when you can try it?

One email when DARA is ready for you. Nothing else.

Join the waitlist

The story · The whitepaper · LinkedIn