"We run a large ERP or CRM system — yet not everything can be done in it. It lacks flexibility and integrations. Many tasks are still handled by hand."
A larger company, 200+ people: you work on big platforms and need dedicated modules at the seams of existing applications. The internal IT team has a six-month queue, or changes to the existing systems are hard to push through.
European engineering for mid-sized companies
I'll build you the system I would want to use myself
Custom database systems for companies with up to 250 people — manufacturing, B2B trade, specialised services. Built around your process, with API integrations and AI under human control. NIS2-ready, your data stays in the EU.
Proven beyond Poland: solutions I designed at Ziebart International were rolled out worldwide by the US headquarters. The full story →
Four situations — pick the one you are in today
Where exactly are you losing time and money?
In numbers
Three numbers that say more than a portfolio
30
years running companies
I have run companies of up to 100 people, with B2B contracts in the double-digit millions. I understand your business from the inside — not only from a software developer's perspective.
5+
years of average client relationship
Clients stay for years — the longest for well over a decade. The first module is usually the beginning: they come back with new ideas, at the pace of their own priorities.
1
client lost
In the entire history of GoIDEA, one client has left — by my own decision. The others come back, even without a maintenance contract, whenever the next problem comes up. You are welcome to ask them.
What I build
Selected case studies
Production management
Orders, scheduling, inventory, machine utilisation — everything in one place, matched to the reality of your shop floor. The system speaks the shift leader's language.
View the case studyFranchise and branch networks
Your whole network of branches and partners in one system: customers and vehicles, bookings, service delivery at the bay, invoices with warranty, plus partner settlements and sales reports.
View the case studyB2B sales and service
CRM for B2B trade with service in one system: customer records, a sales pipeline with potential scoring, service forecasting, segmented mailings, plus projects and budgets. My first FileMaker system — the GoIDEA platform grew from it.
View the case studyInternal tools and integrations
Single-purpose applications that replace spreadsheets and glued-together macros. Connecting your existing ERP with the rest of the company — without rebuilding the ERP.
Ask meAI agents in business applications
Single, controllable AI agents inside your process — one agent that builds the schedule, one that escalates delays, one that classifies tickets or generates the reports waiting on your desk in the morning.
Ask meThis could be your system
Every category on this list started the same way: one client, one specific problem solved. Once we start together, your system may become the next entry on this list. Let's build something valuable together.
Let's talk
Comparison
Five ways to get a system — where working with me wins
The same needs can be covered in several ways. The table shows where each approach is strong and where costs and compromises appear.
| With meGoIDEA | Off-the-shelf softwaresubscription | In-house IT teamon payroll | Agencyper project | Vibe‑codingAI tools | |
|---|---|---|---|---|---|
| Fit to your process | Complete — the system speaks your company's language | Partial — the company adapts to the program | Complete, if you can find someone to hire | Good, depending on the requirements you hand over | A quick sketch, shallow grasp of the process |
| Time to the first module | Days to weeks | Immediate, within the built-in features | Months — recruitment and ramp-up | Weeks to months | Hours to a sketch, longer to deployment |
| Total cost of ownership | Moderate and predictable | Subscription grows with headcount | High — salaries and maintenance | High, billed per project | Cheap at the start, costs return with every fix |
| Your data | With you (on‑prem), GDPR/NIS2 from day one | In the vendor's cloud | With you | Depends on the contract | Usually in the tool's cloud |
| Responsibility for the outcome | One person takes it on | With the vendor | With your people | The project team | With you — the AI only suggests |
| Growth over time | Grows with the company, at your pace | Within the vendor's feature set | Depends on the team's availability | Every change is a new project | Harder as complexity grows |
| Who builds it and knows your business | Me — with 30 years of running companiesThis is where you're closest | A boxed standard product | Your employees | Changing contractors | A tool steered by text prompts |
| After go-live | A partnership that grows with your company | Mass-market support | In-house upkeep | Ends with the project | You're left alone with the tool |
Every approach has its place. With me, you win where process fit, control over your data and responsibility for the outcome matter.
AI without hallucinations — the antithesis of vibe-coding
AI writes code 3× faster. And leaves behind debt you keep paying off for months. I build differently.
Vibe-coding — you type a prompt, get an application, deploy it. The problem starts later: AI-generated code picks the insecure option more often, and technical debt grows faster than you can pay it down. A year later you're putting out fires instead of building anything new, wondering why the system has fallen over yet again. I propose a different path.
45%
of the time, AI picks the insecure code variant over the secure one.
2.74×
more vulnerabilities than in code written by humans.
70%+
security failure rate of AI-generated code in Java.
Source: Veracode — GenAI Code Security Report, 2025
Vibe-coding produces debt. Let's do it differently.
1. Every AI decision can be logged
A log covering more than user actions — the agent's decisions too. What the AI proposed, what inputs it had. You see what the AI based a business decision on.
2. Critical paths go through a human
An AI agent may recommend, suggest, sort. It carries out a financial, legal or permanently data-changing action only after a human signs it off. That is a product decision in line with GDPR and NIS2.
3. Your data trains nobody else's models
Anthropic Claude and OpenAI run via API with the "no training on customer data" setting. AI models installed locally in your infrastructure. Your conversations with sales, production documents, sensitive data — they stay with you.
For company directors
NIS2 moves the liability onto your desk
The directive makes company management personally responsible for the company's cybersecurity — with fines and liability that no longer stop at the IT department. A system that brings data sovereignty, access rights and logging from the very start is not an add-on but the foundation.
How I work — in brief
Four steps. The first takes 30 minutes of your time and costs nothing.
-
1
Week 1
Conversation
30 minutes online, no slides. We check whether we are a fit at all. If we aren't, I say so straight away and recommend someone else.
-
2
Week 2
Audit
A longer conversation, a look at applications I have built, and a joint brainstorming session. A visit to your company is possible. This is where we choose which of your company's needs to tackle first.
-
3
Week 4
First MVP
A working slice you can show your team. Not a mockup, not a presentation — a real module with your data.
-
4
Week 8
Production
The system goes to your team and we iterate on real data. You pay for what works.
Featured case study
A production management system, recognised by Claris.
A production planning system that catches machine overloads before an order runs late.
272%
machine overload caught by the planning board
iPad
at every workstation — operation times from the shop floor in real time
1 system
from the customer enquiry through quotes, orders, process plans and production orders to shipping and invoicing
Claris
Winsoft, exclusive distributor for the EMEA region of Claris — the maker of the FileMaker platform my systems are built on — showcased this implementation as a model example.
FAQ
Six questions I hear from buyers in the first conversation.
Are you an agency, or do you work alone?
I work alone. Sometimes with external developers, but the first conversation, the architectural decisions and the day-to-day contact always go through me. No salesperson, no account manager. That shortens the path, makes communication noticeably better, and saves time and your money — you pay for neither a whole team nor endless corporate meetings.
What if Bartek disappears?
Your data lives in your infrastructure (FileMaker installed locally or in your cloud, in a place you choose or we pick together). Any of the thousands of certified Claris partners worldwide can take over maintenance overnight. Claris FileMaker is a mature, publicly available platform, on the market since 1985. I deliberately chose tools that create no dependence on me.
What does it all cost? Realistically, through to the end.
The first module is 1 500 € (14 days; if refunded, you keep the code, the documentation and the data model) — a special offer for sceptics, see the section further down. A base project typically runs 5 000–15 000 €. New ideas often follow. Clients who stay for years sometimes invest a mid five-figure, in individual cases six-figure amount — spread over several years, at the pace of their own priorities and needs. We close the project once you feel that every need has been covered.
Why FileMaker rather than Mendix / OutSystems / SAP?
FileMaker wins where a custom system is needed — without enterprise licence costs and without lock-in to a single vendor's cloud. The Apple-family Claris ecosystem (yes, Claris is an Apple subsidiary — over 30 years on the market), running in the Claris cloud, in yours, or installed locally. Rapid application building and controlled AI. For companies with 20–250 people, this is the best return per invested developer hour. The platform also ships with built-in mechanisms for secure data access — there is no need to build them yourself, which significantly cuts the time and cost of producing the software.
Is the data safe — GDPR, EU?
Yes. The data can stay on-prem or sit with a hosting provider in the EU — wherever you prefer. NIS2 — I design for legal compliance from the very start.
Does my company fall under NIS2?
Very likely yes, if you employ more than 50 people and operate in manufacturing, energy, transport, information technology or finance — or supply those sectors. Check the details: NIS2 in detail →
Why you can trust me
Your business benefits from my experience.
What clients say.
Thanks to the new CRM system on the FileMaker platform, we brought order to our complex client billing arrangements and automated our invoicing processes. We save a lot of time every month and have increased our revenue.
GoIDEA has taken a role in a redesign, further development, and currently supports our production management system build on the Claris FileMaker that we have been using for 15 years. Very happy with their work ethic and results.
I've had an amazing experience with GoIDEA. We have relatively complex workflows, but with the help of GoIDEA and the FileMaker platform, our business has gotten much more efficient. There hasn't been an idea that I've had that they haven't been able to execute!
Our outlet management system based on the FileMaker platform, delivered by GoIDEA in a very short time, gave us full control over customer service operations and made settlements with our partner businesses much easier.
First step
Book 30 minutes. I answer every email myself.
The first call is a calm conversation to get to know each other. I check whether I can help at all. No slides, no sales pressure. If I see it is a poor fit, I say so directly.
Would you rather talk than write? Pick a slot in the calendar — we will meet on Zoom:
Open Cal.com →
Phone +48 601 789 966 — you can call, I pick up myself.