Custom ERP
Invoicing, inventory, procurement, production, financial reporting and staff records in one system, for one business unit or many.
Custom software for companies
Custom business platform development
ERP and CRM systems, B2B portals, SaaS products and marketplaces that follow how your company really works, connected to your banks, accounting software and the tools you already use.
- You own the code and the data
- First version in 8–12 weeks
- Roles, permissions and audit log
Invoice approved
Synced with bank
- for a first platform version
- from €3,000
- weeks to a usable version
- 8–12
- ownership of code and data
- 100%
- progress demo every week
- 1×
Why a platform
When spreadsheets, email and five apps stop being enough
Most companies aren’t slowed down by their people but by tools that don’t talk to each other. The same data gets typed in three times, and a simple answer means digging through folders.
Data scattered across spreadsheets
Orders live in one sheet, stock in another and customers in someone’s inbox. Nobody has the full picture, and mistakes surface only when a customer calls.
Manual re-typing and checks
Staff spend hours copying data between programs and chasing approvals for documents a system could route on its own.
Off-the-shelf software that holds you back
Per-seat licences keep growing, your process bends to the software instead of the other way round, and new features depend on someone else’s roadmap.
What we build
Platforms that connect people, data and processes
We assemble every platform from modules that match your business, so you can start with what matters most and add more as the company grows.
CRM and sales
Clients, quotes, sales pipelines, cases and communication in one place, with fields and steps that fit your industry.
B2B portals
Portals for partners, distributors and suppliers: orders, customer-specific price lists, delivery status, documents and claims without phone calls and email.
SaaS products
Multi-tenant applications with subscriptions, onboarding, per-company settings and an architecture ready for thousands of users.
Marketplace platforms
Platforms that connect buyers and sellers: listings, search and filters, messaging, online payments, seller verification and an admin panel.
Internal systems and dashboards
Approval workflows, digital archives, registers and live reporting dashboards instead of stitching spreadsheets together every month.
How it works
The architecture of a business platform
Every layer is separate and documented, so the system can grow, change and connect to new tools without a rewrite.
Users and roles
Staff, partners and clients sign in through web, mobile or a portal, with single sign-on and role-based permissions.
Business logic
Modules, rules and approval workflows model your process: who creates, who approves and what happens next.
Central data
One database as the source of truth, with an audit log of every change, automatic backups and record-level access control.
Integrations
API connections to banks, accounting software, payment gateways, email and SMS services and your existing systems.
Reporting and AI
Live dashboards and our own fine-tuned models that read documents and sort requests on your infrastructure.
Use cases by industry
How different industries use business platforms
Same foundations, different processes. This is where a custom platform usually saves the most time.
Retail and distribution
Stock, orders and invoices in one flow
From a partner’s order to delivery and payment, with no re-typing between warehouse, sales and accounting.
- B2B portal for partner orders
- Real-time stock across warehouses
- Customer-specific prices and discounts
Public sector and administration
Paperless documents and approvals
A digital archive with versions, approval workflows and e-signatures, plus a clear trail of who did what.
- Electronic registry and archive
- Approval workflows by department
- Single sign-on for all staff
Tourism and hospitality
Bookings, partners and operations
One system for bookings, travel agencies, accommodation units and field teams, connected to your website and payment providers.
- Portal for travel agencies and partners
- Accommodation and availability management
- Online payments and automatic confirmations
Transport and logistics
Fleet, routes and paperwork
Route planning, delivery tracking and vehicle documents, with mobile access for drivers and dispatchers.
- Route planning and tracking
- Vehicle, service and registration records
- Mobile app for drivers
Professional services
Cases, clients and billable time
For law, accounting and consulting firms: cases, deadlines, documents and time tracking in one place.
- Case and deadline management
- Client portal with documents
- Time tracking and invoicing
Marketplaces and classifieds
Platforms that connect buyers and sellers
Classifieds, marketplaces and service platforms with search, messaging, seller packages and AI help when posting.
- Panels for buyers, sellers and admins
- Paid packages and featured listings
- AI listing drafts from photos
From our portfolio
Platforms we have built
Systems that handle documents, inventory, users and payments every day.
REPER
ERP for running the business
An ERP that brings invoicing, inventory, procurement and reporting for several business units into one dashboard.
- React
- Spring Boot
- PostgreSQL
- Docker
Pečat
Digital archive and document approvals
A document system with approval workflows, e-signatures and single sign-on for the whole organisation.
- React
- Spring Boot
- PostgreSQL
- OnlyOffice
Gepek
Marketplace for vehicles and parts in the Balkans
A multilingual marketplace with separate panels for buyers, dealers and administrators and AI help with listings.
- Spring Boot Modulith
- Next.js
- PostgreSQL
- Keycloak
Packages
How much a business platform costs
We split projects into fixed-price phases, so you launch what delivers the most value first.
First version (MVP)
from €3,0008–12 weeks
For companies that want to replace spreadsheets with one system fast, or test a new platform on the market.
- Up to 3 custom modules
- User roles and sign-in
- Admin panel and basic reports
- One integration
- Import from spreadsheets
- Hosting and backup setup
Most popular
Business platform
from €8,0003–5 months
An ERP, CRM or B2B portal that connects several teams, partners and existing systems.
- Multiple modules and business units
- Approval workflows and audit log
- Bank and accounting integrations
- Real-time dashboards
- Migration from a legacy system
- Team training and documentation
Enterprise
from €25,000in phases
Complex systems, SaaS products and marketplaces with a large number of users.
- Multi-tenant architecture
- SSO and advanced permissions
- Scaling and high availability
- AI features on in-house models
- On-prem or private cloud
- SLA and a dedicated team
Prices are indicative and exclude VAT. After the process analysis you receive a written specification with a fixed price per phase. All pricing
Comparison
Custom platform, off-the-shelf software or spreadsheets
Ready-made products are fine when your process fits them. When it doesn’t, the gap gets expensive.
| Criterion | ProCode custom platform | Off-the-shelf SaaS / ERP | Spreadsheets and manual work |
|---|---|---|---|
| Follows your real process | Yes | Partly | Partly |
| Ownership of code and data | Yes | No | Yes |
| Integrations with banks and existing software | Yes | Partly | No |
| Roles, permissions and audit log | Yes | Yes | No |
| Per-user licences | None | Grow with your team | None |
| Upfront investment | from €3,000 | Low | None |
| New features when you need them | Yes | No | Partly |
| AI features on your own data | Yes | Partly | No |
Process
From analysis to a platform your team actually uses
We work in short cycles with a weekly demo, so you see results from the first week, not at the end of the project.
Step 1 · 1–2 weeks
Process analysis
We talk to the people who will use the system and map workflows, data and the places where time is lost.
Step 2 · 1–2 weeks
Specification and prototype
We define modules, roles and integrations, build a clickable prototype and a fixed-price phase plan.
Step 3 · 6–16 weeks
Development sprints
We build the platform in two-week cycles, with a demo every week and a staging environment for your team.
Step 4 · 2–4 weeks
Migration and training
We move data from legacy systems in rehearsal rounds, test with real users and train your team.
Step 5 · ongoing
Launch and growth
We monitor the system, resolve issues under an SLA and build new modules according to your priorities.
Technology
Proven technology for systems that last
We choose tools with large communities and long-term support, so any serious team can maintain and extend your system.
Frontend
- Next.js
- React
- TypeScript
- React Native
Backend
- Spring Boot
- NestJS
- Node.js
- .NET
- REST and GraphQL APIs
Data
- PostgreSQL
- Redis
- RabbitMQ
- MinIO
- Elasticsearch
Infrastructure, security and AI
- Docker
- Kubernetes
- Keycloak SSO
- CI/CD and monitoring
- Fine-tuned in-house models
Guide
A guide to building a business platform
Before investing in custom software, it helps to know what a business platform really is, when it pays off more than an off-the-shelf product, what it costs and how development works. This guide answers the questions companies ask us most often in the first meeting.
What a business platform is
A business platform is software that connects a company’s people, data and processes in one system. It can be an ERP that brings invoicing, inventory and finance together, a CRM for sales and clients, a B2B portal where partners order goods, an internal system for documents and approvals, or a SaaS product you sell to other companies.
What all platforms share is a single source of truth. When the warehouse records outgoing stock, sales see it instantly, accounting receives the data without re-typing, and management follows it on a dashboard. Instead of people reconciling spreadsheets, the system does it for them.
Custom platform or off-the-shelf product
An off-the-shelf SaaS or ERP is a good choice when your process fits what the product already offers and you don’t need special integrations. It’s quick to roll out and the upfront cost is low. Problems start when a company has specific workflows, several types of users, local banks and accounting software to exchange data with, or when per-seat licences become a significant monthly cost.
At that point customising ready-made software often costs more than building to measure, and the result is still a compromise. A custom platform follows your process, you own the code and data, and you add features when you need them. Good signs you need your own platform:
- the same data is entered into two or more programs
- key processes run on spreadsheets and email
- you pay for features you don’t use and lack the ones you need
- partners and clients order by phone because there is no portal
- the platform itself is the product you want to sell
Which modules and features to plan
You don’t have to build everything at once. The best results come when the first version solves the one process that hurts most, and the platform grows from there. Typical modules are client and partner records, orders and quotes, inventory and procurement, invoicing, documents and approvals, and reports and dashboards.
Beneath the modules are foundations every serious platform needs from day one: user roles and permissions, an audit log of who changed what and when, automatic backups, an API for integrations and an architecture that copes with growing users and data. We always include them, because adding them later is far more expensive.
Where it delivers real savings, we also build in AI: extracting data from invoices and contracts, sorting requests, searching the archive in plain language or drafting documents. We use our own fine-tuned models running on your infrastructure or our private infrastructure, so data never leaves the system.
How much a business platform costs
The price depends on the number of modules, user roles, integrations and security requirements. A first version with core modules usually starts at €3,000 and takes eight to twelve weeks. Mid-complexity business systems such as an ERP or CRM with integrations and migration start at €8,000, while enterprise platforms, SaaS products and large marketplaces start at €25,000 and are delivered in phases.
On top of development, plan for a monthly hosting and maintenance cost that depends on the number of users and the support level. Unlike per-seat licences, this cost doesn’t automatically grow with every new hire. We always split projects into fixed-price phases, so you know in advance what you pay and what you get.
What development and rollout look like
Development starts with analysis: we talk to the people who will use the system, because they know best where time is lost. The analysis produces a specification of modules, roles and integrations, together with a clickable prototype your team can try before we write the first line of code.
Then we work in short cycles. Every week you see a progress demo, and a staging environment lets your team give feedback early. We plan data migration from spreadsheets or a legacy system from the start and run it in rehearsal rounds, so the switch happens without disrupting work. Testing with real users, training and a gradual launch follow.
Security, ownership and maintenance
Business data is among a company’s most valuable assets, so we build security into the architecture: encrypted connections, single sign-on with two-factor authentication, role and record-level permissions, an audit log and regular backups. We can deploy the system to a private cloud in the EU or on your own servers.
The source code, database and documentation belong to you. After launch we offer maintenance under an SLA, monitoring, security updates and new modules, but you are never locked in. Any serious team can take over the system, because we use standard, well-documented technologies.
FAQ
Business platform FAQ
Answers to the questions companies ask before a project starts.
Why custom software instead of an off-the-shelf product?
Off-the-shelf products work well when your process fits theirs. When a company has specific workflows, local bank and accounting integrations or several types of users, customising a ready-made product often costs more than building to measure, and the result is still a compromise. A custom platform follows your process, you own the code and data, and you add features when you need them, without waiting for someone else’s roadmap or paying per-user licences.
How much does a business platform cost?
A first version with core modules starts at €3,000. Mid-complexity systems such as an ERP, CRM or B2B portal with integrations start at €8,000, and enterprise and SaaS platforms at €25,000. The price depends on the number of modules, roles and integrations. We split projects into fixed-price phases, so you launch the most important features first and invest gradually. After the analysis you receive a written specification and quote.
How long does development take?
A first usable version is typically ready in eight to twelve weeks. Fuller platforms with several modules, integrations and data migration are built in phases over three to six months. You see a progress demo every week, so your team can give feedback early. We also plan time for user testing, migration and training, because those steps decide whether the system is actually adopted.
Can you migrate data from spreadsheets or a legacy system?
Yes. We plan migration from the start: we analyse the source, whether it’s spreadsheets, an old application or a SQL database, remove duplicates, map the data to the new structure and validate it with your team. Migration runs in rehearsal rounds before the final switch, so the new system starts with accurate data and without interrupting day-to-day work.
Which systems can the platform connect to?
We connect platforms to banks, accounting software, payment gateways for card payments, email and SMS services, calendars, courier services and existing internal software. Integrations run through APIs, and when a legacy system has no API we propose the safest way to exchange data, such as scheduled exports or a middleware service. Every platform also gets its own documented API for future integrations.
Can the platform include AI features?
Yes. We add AI where it brings real savings: extracting data from invoices and contracts, sorting requests, searching documents in plain language, and drafting replies and reports. We use our own fine-tuned models adapted to your domain, running on private infrastructure or your servers, so your data never leaves the system and is never used for anything else.
Who owns the code and the data?
You do. Once paid, you receive the source code, the database, documentation and access to every environment. We use standard technologies such as Next.js, Spring Boot and PostgreSQL, so any serious team can maintain and extend the system. You aren’t locked in, although most clients continue working with us on maintenance and new modules.
How do you keep data secure?
Security is part of the architecture from day one: encrypted connections, single sign-on with two-factor authentication, role-based permissions, an audit log of every change and automatic backups. We deploy to a private cloud in the EU or your own infrastructure, keep dependencies updated and check for common vulnerabilities before launch. For sensitive industries we also offer on-prem installation.
Can the platform grow with the company?
Yes, we plan for it from the start. We build platforms modularly, with separate layers for the interface, business logic and data, so new modules, business units and integrations are added without rewriting existing code. Container-based infrastructure lets the system scale as users grow, and for SaaS products we use a multi-tenant architecture.
What does maintenance after launch include?
Maintenance covers monitoring availability and performance, security updates, backups, resolving reported issues within the response times set in the SLA, and small changes. We plan new modules together with you according to business priorities. The price depends on the size of the system and the support level and is agreed in advance as a monthly package.
Related services
Related services
Ready to replace spreadsheets with one system?
Tell us about the process that slows you down most. In a free call we’ll suggest an architecture, phases and an indicative price for your platform.