Tareno Systems
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Most consultants hand you a deck. We hand you the working system.

For 25 years we have been responsible for critical systems in demanding environments: closed platforms, limited ways to connect them, thousands of users. The tools we needed did not exist. Now we build them ourselves, in days.

We work with organisations that have many users, crews in the field and systems that cannot easily change. Anyone planning technical work in a shared spreadsheet, or finding out what a subcontractor cost only after the month has closed.

The part that is yours Excel Web Post-it Email
1 · The work runs on Excel, web portals, post-its and email2 · More people, more load: copies and loose ends everywhere3 · We build one tool around how you work4 · The spreadsheets and notes go. The portal stays, connected

What we do

Take it apart. Rebuild it. No handoff.

Three rungs, not three unrelated products. The diagnostic ends with a working prototype, which is what makes the sprint a decision rather than a leap of faith.

Before and after

From one of our case studies: a contractor with 100+ technicians, planning the day from a spreadsheet.

BeforeEvery morning, 1,100 jobs copied into a spreadsheet by hand

AfterEvery job and every technician on one screen, every 30 minutes

Before: Every morning, 1,100 jobs copied into a spreadsheet by hand
After: Every job and every technician on one screen, every 30 minutes

Before

  1. 1Copied out of the system by hand, every morning
  2. 2Which of these jobs can anyone actually be sent to?
  3. 3Dates stored back to front — 1 September became 9 January

After

  1. 1A third of the waiting jobs could never have gone to any technician — found in week one
  2. 2The fix is one step: give the area to a technician

Illustrative interface. All values synthetic.

Read the case study → All case studies

The gap

Consultancies understand the operation but cannot build.

Integrators and OSS vendors can build, but will not take a €15,000 job.

Freelancers will take it, but do not know how an operation like yours runs — or what the regulatory framework requires.

Nobody who understands the operation is also willing and able to build the small tool it needs. That is the whole business.


Common questions

Who is "we"?

A small senior partnership rather than an agency. Between us we cover operations and infrastructure, software delivery, and the regulatory and commercial side of the Greek and EU market. You deal with the people doing the work — there is no account layer between you and them.

Can you handle the regulatory and compliance side, not just the software?

Yes, and it is usually the part that decides whether something is workable. Reporting obligations, licensing and permitting, and what a regulator will actually accept as evidence shape the data model long before anyone writes code. We would rather raise those constraints in week one than discover them at go-live.

Is what you build a prototype, or is it production software?

Production. A build sprint ends with a system deployed at a URL, running on real data, with the repository handed to you. The diagnostic includes a genuine working prototype rather than a mockup, but it is scoped as a proof — the sprint is what hardens it.

Who owns the code?

You do, entirely. You get the repository with its full commit history, the documentation, and a handover session covering how to run and change it without us. There is no licence, no hosting lock-in, and no black box.

Who maintains the system after you hand it over?

That is exactly why the handover is part of the deliverable rather than an optional extra. You hold the code, the documentation and the walkthrough recording, so any competent developer can pick it up. If you would rather we kept it running and improving, that is what Run is for — a flat monthly fee, and the code stays yours.

You use AI to build. Does that mean the work is generated?

No. AI compresses implementation — scaffolding, boilerplate, integration glue, iteration speed. It does not decide which problem is worth solving, sit in the room with your team, or own the outcome. Those are the job. The speed is why this is affordable; the judgement is what you're buying.

Do you work in Greek?

Yes. Delivery, documentation and meetings in Greek or English, whichever suits your team. Written deliverables are usually in English unless you ask otherwise, because that is what most technical documentation ends up being maintained in.

How do you price?

Fixed price for a defined scope, never an hourly rate. You agree the number before work starts and carry no overrun risk. Ranges are published on each service page along with what moves them, so you can estimate before we speak.

We're small. Are we too small for this?

Probably not — small companies are the ones with no analyst and no spare engineering capacity, which is the whole reason this exists. If a diagnostic is more than the problem is worth, we will tell you on the call and suggest something cheaper, including doing nothing.

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If what you need is a platform replacement, we are not it — we will say so on the call and point you somewhere.