Architecture of complex systems.   20+ years of experience. AI speed. Senior reliability.

We solve complex integrations where others stop.
We know how systems fail, so we build them to last.

Why building your own solution makes sense?

If you recognize at least one of these situations, off-the-shelf tools are likely already holding you back

Off-the-shelf tools don’t fit your business

Standard tools, SaaS solutions and off-the-shelf modules no longer reflect how your business actually operates.

Business specific processes

Your business doesn’t fit into a “default” workflow. Every attempt to adapt off the shelf software turns into a workaround, added cost and lost time.

Systems are not properly integrated

ERP, webshop, warehouse and marketing systems lack proper integration, leading to inconsistent data and manual synchronization.

Growth creates challenges

As users, orders and business rules grow, performance and stability begin to suffer.

Dependent on vendors

You can’t change direction without waiting for someone else’s product roadmap and vendors often lack the expertise or resources to adapt their software beyond predefined limits.

Control is not in your hands

You don’t fully control critical parts of your software. Decisions about features, priorities and timelines are driven by vendors - not by your business goals.

Our approach

Focus on complex systems

Focus on complex systems

InSyBo is a small, highly specialized engineering team focused on complex systems, precise integrations and solutions that require experience and accountability.

Stabilna rješenja koja traju

Long term stable solutions

We work where standard approaches are no longer sufficient, applying clear analysis and technical depth to ensure solutions remain stable and sustainable long-term.

Real business value

Real business value

No problem is too small if solving it delivers real business value. Precision over volume.

What we do

We specialize in end to end systems, without vendor lock-in

High-Performance UX for Complex Systems

High-performance UX for platforms with heavy traffic and complex business rules. Speed, clarity and reliability directly improve conversion and operational efficiency.

UX
Usability
Performance

Seamless System Synchronization

We untangle Integration Hell. Robust ETL pipelines, real-time synchronization and integration layers for systems handling high volumes of transactions and customer data.

ETL
Integrations
Real-time

Intelligent Systems for Scale

We design models and control logic for high-volume data processing without sacrificing quality or security. Advanced methods are applied only where they produce measurable business value.

Data driven
Algorithms
Optimization
Scalability

Senior Engineering

20+ years of enterprise experience means senior engineers lead your project directly, without layers of junior handoffs. No beginner mistakes. Clear accountability from day one.

Senior-only
20+ years

Professionalism means taking responsibility for the
quality of the software we ship.

Robert C. Martin
Clean Code · Clean Architecture

Technologies

.NET
MS SQL
PostgreSQL
Docker
Tailwind CSS
DaisyUI
Bootstrap
HTMX
REST
JWT
OAuth 2.0
System integrations
ETL
CI/CD
ERP class systems

Why clients stay with us

  • 1 Focus on stability and fast delivery.
  • 2 Clean code, clear ownership, and communication with no surprises.
  • 3 Long-term sustainable architectures, without lock-in.
Years of experience
20+
in enterprise projects
End users
1M+
use our solutions
SLA availability
99.9%
measurable and verifiable

Get in touch

Custom Software Development Company in Europe

COMPANY NAME

InSyBo d.o.o.

REGISTERED OFFICE

10000 Zagreb, Hrvatska
Bosanska 58

REGISTRATION DETAILS

MBS: 081536927

OIB: 99932669234

SHARE CAPITAL

The company’s share capital amounts to
EUR 2,500.00 / HRK 18,836.25
(fixed conversion rate 7.53450)
fully paid in.

BUSINESS BANK

Erste&Steiermärkische Bank d.d. – Rijeka
IBAN: HR1224020061101186589