Eolas LabsWe operate what we build

Senior technical leadership, part-time.

The Eolas Labs fractional CTO service puts principal-level technical leadership inside your company a few days a month, without the cost or the commitment of a CTO on staff. It is led by Tanuj Goswami, a principal architect with more than fifteen years building ordering, warehouse and traceability systems — at Oxford Nanopore Technologies (UK) and here.

From €2,500/month€900/day ad hoc · No lock-in
Tell us your ideaWhatsAppWe reply within one working day
  • 3 days a month€2,500/monthArchitecture and decisions
  • 6 days a month€4,900/monthPlus team direction
  • 8 days a month€6,400/monthContinuous presence
  • Ad hoc€900/dayAudits and second opinions

Who it is for

  • You have developers but nobody deciding the architecture.
  • You are about to sign with a vendor and want someone to read the technical contract.
  • Your product works, but every change costs more than the last one.
  • You are in due diligence and the technical side needs to survive scrutiny.

What we do

  • Initial audit

    What you have, what it will cost to maintain, and what will slow you down a year from now.

  • Technical roadmap

    Prioritised by risk and opportunity cost, not by what is fun to build.

  • Build vs buy

    The decision that saves or burns the most money, with the numbers in front of you.

  • Team direction

    Code review, hiring criteria and mentoring for the developers you already have.

  • Vendor conversations

    Someone on your side of the table when the budget is being decided.

The credential

More than fifteen years of engineering, and a principal architect at Oxford Nanopore Technologies (UK), where he built their internal ordering and logistics system, data traceability, an integration gateway between back-end platforms and the move of much of the infrastructure to the cloud. The same judgement applies whether it is a platform with thousands of users or a manufacturer’s store — and it shows up most in what we decide not to build.

Who does it

Frequently asked questions

What people ask us about Fractional CTO.

What is the minimum commitment?

Three months. Less than that is not enough time to understand a system and leave something working. After that there is no lock-in: one month’s notice.

Do you work remotely or on site?

Both. We are in Torrelavega and cover Cantabria and northern Spain easily; for the rest of Spain and the EU we work remotely with occasional visits.

Can you also build what you recommend?

Yes, and we say so up front so you can read the advice accordingly. If the advice is “do not build this”, you will get that too.

All services

Tell us your idea.

A 20-minute call or a WhatsApp message. We will tell you what we would build, how long it would take and what it would cost.

We reply within one working day · ES / EN

  • Two-week discovery at a fixed price
  • If we build it, the discovery is credited back
  • Maintenance from €150/month
  • No lock-in on retainers
WhatsApp942 735 955