University information system
In the supplier's development team, I contributed to the PHP/Symfony backend of a university information system, including changes to existing logic and ongoing maintenance. Charles University is the end user.
Radovan Kraus · senior PHP / Nette / Symfony
PHP systems and integrations
I take over and develop existing systems, build new business applications, and connect them to APIs, payments, and registries. From backend work and administration interfaces to careful production deployment.
20+ years with PHP
Nette and Symfony
APIs and business integrations
When I can help
Three common reasons companies contact me
Tell me what you have and what is holding you back. You do not need a finished technical specification.
01
An existing application needs attention
The original developer has left, changes feel risky, or legacy code has accumulated. I map the system and propose a safe way forward.
02
You need a new business tool
I build internal applications, client portals, forms, and administration interfaces for real business operations.
03
Your systems need to communicate
I connect APIs, payments, registries, and hardware, and handle data exchange between existing services.
Experience in practice
Selected work on operational systems
My roles and deliverables in projects I have worked on.
Inspection tracking · MIKŠÍK ELSTAV
- Brief
- MIKŠÍK ELSTAV s.r.o. needed one application to track equipment, inspections, and deadlines.
- My work
- I designed the entire application and implemented it end to end in PHP/Nette, including records, reminders, and workflows.
- Delivered
- One system now covers equipment, inspections, deadlines, and reminders.
Client centre and ERP · Tommy Stachi
- Brief
- A client centre for customers and the company's ERP system.
- My work
- I made a significant contribution to the frontend and backend of both the client centre and the ERP system.
- Delivered
- The client centre is available online behind sign-in; the ERP system is internal.
School information system · Schoolpartner
Development work on a system for school administration and daily operations.
Visit project websiteBitcoinzmenaren.sk · Romiix
For Romiix, I contributed to frontend and backend development of the Bitcoinzmenaren.sk web application.
My own software
Design, development, distribution, and support of my own .NET desktop applications, including invoicing and integrations.
More about .NET development
Services
How I can help
From taking over one area to long-term application development.
Taking over and modernizing a PHP application
I examine the code, operations, and risks, then propose gradual improvements without an unnecessary full rewrite.
Service detailsBackend and business applications
PHP, Nette, Symfony, databases, APIs, forms, administration interfaces, and client portals.
Service detailsSystem integrations
Payments, banking APIs, registries, REST/SOAP, XML/JSON, imports, exports, and hardware.
Service detailsStabilization and continued development
Bug fixes, tests, automated checks, CI/CD, staging, and production deployment.
Service details.NET application development
Business software for Windows, web applications, and development of existing systems.
Integrations
Integrations I have worked with
Examples of real interfaces and devices from my work.
Finance and data
Kontomatik (Open Banking / PSD2), NRKI, BRKI, Kraken, and CoinGecko.
Payments & terminals
Worldline and payment terminals, online payment gateways, EET.
Government registries
RÚIAN for addresses and ARES for company information.
Devices and formats
LED panels, external devices, REST/SOAP, XML, and JSON.
Collaboration
How we start and what follows
Your first message does not need a complete specification. Together we identify what to find out and agree on the first step.
01
Describe the situation
Tell me what the application does, what is blocking you, and what outcome you need.
02
Review the current state
In an initial conversation we clarify the scope, available materials, constraints, and main risks.
03
Agree on the first piece of work
I suggest a concrete next step, scope, billing approach, and estimate based on the information available.
04
Verify and hand over the change
Important changes go through checks and a test environment before production deployment.
For clients outside Czechia and Slovakia
Individual quote
Before work begins, I clarify the scope, estimate, and billing terms based on the assignment.
AI and quality
Faster development with technical accountability
Codex helps me understand unfamiliar code and prepare changes faster. I remain responsible for the design, verification, and operational impact.
- AI-assisted development guided by an experienced developer.
- Tests, review, and automated checks in the CI/CD pipeline.
- Staging and carefully planned production deployment.
About
Radovan Kraus
I have built PHP applications for real-world operations for more than 20 years. I work on backends, business interfaces, and integrations, take over existing systems, and help companies develop them further. I have also built several websites for businesses, schools, and preschools in my region. I communicate directly with clients and understand the responsibility that comes with deployed software.
Education: Palacký University Olomouc — Computer Software Engineering (Bachelor's and Master's degrees).
What you get when we work together
- Direct communication with the developer.
- Experience taking over and maintaining large applications.
- A focus on stability, understandable code, and safe changes.
Contact
Let's discuss your project
Tell me what works today, what you need to change, and what outcome you expect. I will get back to you with a suggested next step.
koder@rkcomputer.cz