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Jakub Curij Integration & automation
Integration & automation · Paris

Your software finally works together.

Custom connectors, automated transfers, an end to double entry. I connect the tools you already use so your data moves on its own, correctly, and without waking you up at night.

Connectors between applications Automation of data flows Audit of what you have

Speciality
Data flows between business applications
Contact
One person, from quotation to go-live
Delivery
Seven days at most, in self-contained lots
Payment
After delivery, no deposit
The problem

Your data already exists. It simply does not move.

Most companies do not need another piece of software. What they need is for besoin que ceux qu'elles utilisent arrêtent de s'ignorer.

Aujourd'hui

Le travail invisible

  • A manual export on Friday evening, and nobody to do it during the holidays
  • The same customers entered twice, spelled two different ways
  • A mistake found by the accountant, three weeks later
  • Files sent as attachments, with no way to tell which one is authoritative
Après

The flow does the work

  • Le transfert s'exécute seul, à heure fixe, y compris au mois d'août
  • A record entered once, available everywhere
  • An alert at the moment of failure, with the offending row
  • A single source of truth, and a log you can read
Use cases

Three situations I handle regularly

Representative engagements, mapped from the source system through to the système d'arrivée.

Shop VAT · credit notes Accounting
Online retail

From shop to accounting

Orders from the site go to the accounting software every night, with the right VAT codes and credit notes correctly attached.

→ No more manual month-end export

CRM validation Invoicing
Business services

From CRM to invoicing

A quotation accepted in the CRM creates the invoice in the invoicing tool, with no re-keying and no discrepancy between the two systems.

→ One entry, two systems up to date

ERP SFTP drop Logistics
Distribution

From ERP to logistics partner

Stock levels and shipments are exchanged by automatic file drop, with a readable log and an immediate alert on failure.

→ Errors show up the same day

Shop

Ten ready-made automations

Three downloadable templates and seven fixed-price services, delivered instantly or set up within three working days. Fixed price, paid at the time of order.

Instant download

Flow monitoring spreadsheet

A ready-made spreadsheet to keep track of your transfers: last run, volume processed, errors still open.

  • Tracking sheet with formulas and conditional formatting
  • One-page instructions: two minutes a day to keep it current
  • Standard spreadsheet format, works in Excel and LibreOffice
49.00 € Add to basket
Instant download

Field mapping worksheet

The document to fill in before connecting two systems: which field goes where, in what format, and what happens when it is empty.

  • Mapping table for source and target fields
  • Format, mandatory status and default value per field
  • Duplicate and conflict rules to decide before you start
  • Worked example: online shop to accounting
69.00 € Add to basket
Instant download

Customer file cleanup script

Finds duplicates, normalises phone numbers and postcodes, and flags doubtful rows instead of deleting them.

  • Duplicate detection on name, email and phone
  • Phone and postcode normalisation
  • Report of every row set aside — nothing is deleted silently
  • Instructions in English and French
79.00 € Add to basket

Every morning, your stock position in your inbox: out-of-stock items, thresholds reached, yesterday's movements.

  • Scheduled extraction from your management tool
  • Alert thresholds agreed with you
  • Formatted email, readable on a phone
  • Set up and tested on your environment
129.00 € Add to basket

A scheduled, compressed and dated backup, with an alert when it fails — installed and verified on your server.

  • Daily or hourly scheduled backup
  • Automatic rotation of older backups
  • Email alert on failure
  • Restore tested once before handover
149.00 € Add to basket

Your orders reach your accounting software every night, in the right format and with the right VAT codes.

  • Daily extraction of the previous day's orders
  • VAT codes and credit notes mapped correctly
  • File in the format your accounting expects
  • Execution log and failure alert
179.00 € Add to basket

A contact created on one side appears on the other, with no manual export and no duplicates.

  • Two-way synchronisation
  • Conflict priority rule, agreed with you
  • Handling of duplicates and deleted contacts
  • Set up and tested on your own data
199.00 € Add to basket

You hear about a failed transfer the same day, instead of three weeks later from your accountant.

  • Periodic check on execution and expected volume
  • Email alert from the first failure
  • Readable log of the last twenty runs
  • Fits an existing flow, whoever built it
199.00 € Add to basket

Three staggered reminders that send themselves and stop the moment the invoice is paid.

  • Three reminder templates, timing configurable
  • Automatic stop when the invoice is settled
  • Per-customer view of reminders sent
  • Set up on your invoicing tool
229.00 € Add to basket

Every paid order creates its invoice, with the right VAT rate and an unbroken numbering sequence.

  • Invoice created automatically on paid order
  • Continuous, compliant numbering
  • Refunds and credit notes handled
  • Set up, tested and documented
249.00 € Add to basket

Fixed prices, shown in the currency you selected: no exchange rate is applied. TVA non applicable, article 293 B du CGI. These products exist already and are paid for at the time of order. Bespoke services remain invoiced after delivery.

Bespoke services

And for everything that fits no box

When your need matches no product in the shop, the work is built to order: written quotation, delivery, then an invoice payable within fourteen days. No deposit.

Connectors and integrations

Two systems that do not talk to each other, connected for good.

Your tools finally exchange the same data, both ways, with error recovery designed in from the start.

  • Double entry between your two tools disappears
  • Errors are caught before your customers see them
  • One reference record instead of two versions drifting apart

From 1,200 €

Data flow automation

What you do every Friday evening, done on its own.

Scheduled transfers between applications, with no re-keying and no file travelling by email.

  • Hours of manual handling recovered every month
  • Transfers run at night, not during your working day
  • An immediate alert, instead of finding out three weeks later

From 390 €

Ready-to-use scripts and templates

A proven automation, adapted to your environment.

When your need resembles a case already solved, there is no point starting from a blank page.

  • Quick to put in place, with no project to set up
  • A base already tested elsewhere, not a prototype
  • No additional subscription to take out

From 290 €

Technical audit of existing flows

Know what is breaking before spending anything.

A survey of your current flows: what fails, what duplicates, what can be automated.

  • You know where to invest before committing to development
  • A written costing, not an estimate given over the phone
  • Priorities ranked by real gain, not by ease

From 450 €

Indicative amounts in the currency selected, to give a sense of scale. TVA non applicable, article 293 B du CGI. The firm price is the one in the written quotation, prepared after reviewing your requirement.

Environments

What I connect day to day

  • CRM
  • ERP
  • Logiciels de comptabilité
  • Boutiques en ligne
  • Outils de facturation
  • API REST
  • Webhooks
  • SFTP
  • Bases SQL
  • Fichiers CSV et XML
  • Tableurs
  • Outils métiers internes
How it works

From first contact to go-live

Five steps, in this order. Each one depends on the last, and that is what permet d'annoncer un délai tenable plutôt qu'optimiste.

Plan de travail : documents de cadrage, carnet et clavier

Everything is written down before we start Scope, price and delivery time are in the quotation. The terms and conditions cover the rest.

  1. 01

    First conversation

    A call to establish which systems need to talk to each other, what data moves and how often. No commitment.

  2. 02

    Written quotation

    Scope, price and delivery time on a single document. A larger requirement is split into lots of seven days at most, each usable as delivered.

  3. 03

    Access and set-up

    You provide the access credentials and a test data set. The clock starts when those arrive.

  4. 04

    Development and testing

    The connector is built, tested against your data and put into service. You have fifteen days to report any deviation from the quotation.

  5. 05

    Delivery, then invoice

    Configuration, documentation and rights in the developments. The invoice arrives only after commissioning, payable within fourteen days.

Jakub Curij, independent developer
Who works on your project

Jakub Curij

Independent developer based in Paris, specialising in systems integration and data flow automation. I work alone : the person who writes the quotation is the one who writes the code, and the one who answers when a flow stops on a Tuesday morning.

My work rarely means adding another piece of software. Far more often it means holding together the ones you already have : connecting a CRM to accounting, replacing a Friday-evening export with a scheduled job, or taking over an existing flow that fails without anyone noticing.

A good connector is one you never hear about again.

Jakub Curij — Entrepreneur individuel
6201Z — Programmation informatique · SIRET 109 047 886 00014

Frequently asked

What people ask before we start

What does an engagement cost?

It depends on how many systems have to be connected, the volume of data and the quality of the interfaces available. A simple automation between two tools that expose an API is nothing like picking up an old flow with no documentation.

Every request receives a free written quotation setting out the scope, the price and the delivery time before anything starts. You know what you are committing to before the first line of code.

The shop is the exception: those ten products have a fixed, published price, because they exist already and are not built for you.

How does payment work?

For bespoke work you pay nothing before you have received the service. No deposit is taken: the invoice is issued once the flow is in service, and it is payable within fourteen days. That rule applies to every engagement, whatever the amount.

Shop products work the other way round, and that is deliberate: they are paid for at the time of order, because the product already exists and is delivered immediately or within three working days.

You pay by SEPA bank transfer or through a secure payment link sent with the invoice. Depending on where your business is established, local payment methods may be offered. No card data is entered on this site or held by me.

There is no subscription, no direct debit and no automatic renewal.

Which currency am I charged in?

Prices are shown in Swedish kronor by default, and in euros if you switch currency in the header. The amount you see is the amount you are charged.

Prices are set separately in each currency rather than converted at a live rate. An exchange rate would produce odd figures and could change between the moment you see the price and the moment you pay it.

How quickly is it delivered?

No engagement exceeds seven days. An audit is delivered in three days, an automation in five, a connector in seven.

In the shop, three downloadable templates are available the moment payment clears, and the seven services are set up on your environment within one to three working days.

A larger requirement is not turned into a three-month project: it is split into successive lots, each self-contained and usable as delivered, each with its own quotation and its own seven-day limit. You are never committed beyond the lot in progress.

The clock starts when the access credentials and materials arrive, not when the quotation is signed. It is suspended for as long as something requested remains outstanding — that is what makes short delivery times possible without guessing at them.

Do you work with my software?

In the large majority of cases, yes. As soon as a system exposes an interface, an export that can be automated or an accessible database, it can take part in a flow — whoever publishes it.

If your tool does not allow it, I tell you at the first conversation rather than after the quotation.

What happens if the flow breaks?

Every flow is delivered with logging and a failure alert: you hear about a problem when it happens, not three weeks later from your accountant.

Defects reported within fifteen days of delivery are corrected free of charge. Beyond that, maintenance is the subject of a separate contract, never a tacit renewal.

Who owns the code that is delivered?

You do, for bespoke work. Economic rights in the developments produced for you transfer on payment in full, with the documentation another provider would need to pick the work up.

I keep ownership of my pre-existing generic components, on which you receive a free, perpetual licence to use.

Shop products are licensed rather than assigned: you may use them across your own business, but not resell them or build them into a product you sell.

How are my credentials and data protected?

Identifiers and interface keys entrusted during an engagement are held in an encrypted secrets manager and deleted when the engagement ends.

Where the work involves processing personal data on your behalf, I act as a processor under the GDPR and a data processing agreement is signed before anything starts.

Do you work outside Paris?

Yes. Most of the work is done remotely, on your environments. Scoping meetings can be held by video call, or in person in the Paris region.

Payment

Invoicing and payment methods

For bespoke work you pay only once the flow is in service. No deposit, no advance, no direct debit.

  • You pay after delivery

    No deposit, no advance. The invoice is issued only once the flow is in service and checked with you.

  • On invoice

    A named invoice setting out the work, the VAT status and the bank details. Payable within fourteen days.

  • Bank transfer

    SEPA transfer to the details on the invoice. This is the most common method for clients established in the euro area.

  • Secure payment link

    A link sent with the invoice allows online payment. No card data is entered on this site or held by me.

  • Local payment methods

    Depending on where your business is established, other methods may be offered case by case. They are then set out in the quotation before acceptance.

Devise
Swedish krona (SEK) or euro (EUR), no conversion
Livraison
7 days at most, then invoicing
Tax status
TVA non applicable, article 293 B du CGI
Acompte
None — invoiced after delivery
Payment term
14 days from the invoice date

Le détail figure à l'Article 6 of the terms and conditions, and the refund arrangements in the refund policy.

Request a quotation

Describe the flow and I will come back with an estimate.

Even a rough description is enough to say whether it is feasible, roughly how temps cela prend et ce que cela coûte.

Which systems need to talk to each other, what data, how often. Even a rough answer helps.

The information you enter is used only to answer your request. It is sent by email to Jakub Curij — Entrepreneur individuel and is not stored in a database. Elles sont conservées trois ans à compter du dernier échange si la demande n'aboutit pas. Vous disposez d'un droit d'accès, de rectification et d'effacement : privacy policy.