1
Meeting: Project Briefing
We discuss your needs, existing systems and the goal of the project. We identify the problems and define the scope.
Software Development from Design to Production
I build new software, take over projects in progress and modernize existing applications. We discuss what you need, I design the solution, write the code and take care of deployment and further development as well.
NEW DEVELOPMENT
From idea to production
TAKEOVER
Projects in progress
MODERNIZATION
Existing applications
REAL-WORLD EXPERIENCE
25+ Years of Experience: I Understand Your Business
„Warehousing, logistics, manufacturing, finance, transport and business operations. You do not need to teach me how dispatch, inventory or invoicing works — I speak your language.“
Customize my intro card
Where Can My Experience
Save You Time and Money?
Mobile & Web Applications
Development of responsive web apps, customer self-service portals and cross-platform mobile apps for iOS and Android.
Private & public applications
Cross-platform (iOS/Android)
Clean, intuitive user interface
Legacy System Modernization
Analysis and refactoring of legacy solutions, updates to business functionality, simplification, performance improvements and migration to a different environment.
Preserving existing data
Modern, user-friendly UI/UX
Phased transformation
Custom Single-Purpose Enterprise Tools
Specialized applications that solve a specific need for which no suitable software exists or available solutions are unnecessarily expensive and inflexible.
Tailored exactly to your workflows
No unnecessary features
Immediate return on investment
Warehouse Management, Logistics & Manufacturing
Inventory tracking, bin location management, automation, task allocation, quality inspection, procurement and scheduling.
Mobile terminals and smartphones
Vending machines
Carrier integrations
Industrial Automation & Hardware Peripherals
Conveyor control, label applicators, PLC communication, touch panels, industrial weighing systems, product quality inspection.
Serial communication (RS232/USB/TCP)
Operator touch panels
Real-time telemetry & sensors
ERP, CRM, WMS and EDI
Data bridges between enterprise systems and e-commerce platforms via REST, SOAP, XML and EDI standards.
Bi-directional synchronization
Order & invoice processing
Routine workflow automation
Are you planning new software, taking over a project in progress or modernizing an existing application?
Tell me what you need. We will discuss the options and agree on the next steps.
Case Study: Complete Modernization of a Large-Scale System
A long-running system in the food industry used in the Czech Republic and Slovakia. I worked independently on its modernization and covered every necessary role — from analysis, project management and architecture through development to deployment and user training.
-70 %
Monthly Operating Costs
A significant reduction achieved by replacing the original server-based solution with cloud and open-source technologies without license fees.
< 1 sec
Average Response Across the Entire System
The whole solution became faster. Even the most demanding reports and batch operations, which previously took tens of minutes, now finish within seconds.
> 500K
Active Clients
The system has consistently served approximately half a million active clients.
> 70K
Mobile App Installs
Combined installs of two iOS and Android applications since their release on the App Store and Google Play.
A Connected Ecosystem of Services
The original solution was gradually replaced during live operation by a new connected system:
Web administration and portals
Two mobile applications for iOS and Android
Customer IoT device
ERP integration
Bank and payment gateway integrations
Emailing, reporting and notifications
Gradual modernization with no downtime
Continuous consultation and adaptation to current requirements
Source code owned by the client with no vendor lock-in
Do you have a legacy system or suite of applications to revitalize but feel hesitant about making the change?
Do not let the change hold you back. The advantages and benefits go far beyond those shown in this example. Today, AI agents can significantly accelerate and simplify a well-managed migration.
Unsure Who to Choose for Your Project?
Each option has its place. It depends on the scope, the speed you need and how much of your own time you want to invest.
DIY with AI
With Me
Software Agency
When It Makes Sense
You want to validate an idea or build a simple prototype quickly and have time to work on it yourself.
You want to work directly with the person who will analyze, design and build the project.
You need a larger team, reliable backup and the support of an agency.
The Biggest Advantage
A fast start and low initial cost.
One person will oversee the entire project and transfer all the know-how to you.
More capacity and the ability to work on several parts of the project in parallel.
Your Time Commitment
Requirements, decisions, checking the result and steering the project all remain your responsibility.
We discuss the requirements and proposed solution together. Then I handle development, testing and deployment.
The supplier manages the project, but meetings, hand-offs and approvals are still part of the process.
Changes During Development
You can make changes immediately, but you must specify and verify them by yourself.
You discuss changes directly with me, in the context of the whole project.
Changes usually pass through an agreed process and several roles.
Capacity and Coverage
Progress is limited by your time and ability to judge whether the result is actually correct.
I work independently and do not have permanent cover. When needed, I am in contact with specialists.
A team can work on several areas in parallel and provide better staff coverage.
Operations and Support
Operations, troubleshooting and future maintenance remain your responsibility.
I offer support and SLAs tailored to the specific project. I hand over the application so its routine operation does not depend on me alone.
It may offer on-call support, an SLA and a long-term support team, depending on the contract and price.
Source Code
It depends on the service, platform and whether you can export the complete project.
The source code is yours. Your internal IT team or another developer can take over maintenance and further development.
It depends on the contract, platform and handover arrangements.
1
When It Makes Sense
DIY with AI
You want to validate an idea or build a simple prototype quickly and have time to work on it yourself.
With Me
You want to work directly with the person who will analyze, design and build the project.
Software Agency
You need a larger team, reliable backup and the support of an agency.
2
The Biggest Advantage
DIY with AI
A fast start and low initial cost.
With Me
One person will oversee the entire project and transfer all the know-how to you.
Software Agency
More capacity and the ability to work on several parts of the project in parallel.
3
Your Time Commitment
DIY with AI
Requirements, decisions, checking the result and steering the project all remain your responsibility.
With Me
We discuss the requirements and proposed solution together. Then I handle development, testing and deployment.
Software Agency
The supplier manages the project, but meetings, hand-offs and approvals are still part of the process.
4
Changes During Development
DIY with AI
You can make changes immediately, but you must specify and verify them by yourself.
With Me
You discuss changes directly with me, in the context of the whole project.
Software Agency
Changes usually pass through an agreed process and several roles.
5
Capacity and Coverage
DIY with AI
Progress is limited by your time and ability to judge whether the result is actually correct.
With Me
I work independently and do not have permanent cover. When needed, I am in contact with specialists.
Software Agency
A team can work on several areas in parallel and provide better staff coverage.
6
Operations and Support
DIY with AI
Operations, troubleshooting and future maintenance remain your responsibility.
With Me
I offer support and SLAs tailored to the specific project. I hand over the application so its routine operation does not depend on me alone.
Software Agency
It may offer on-call support, an SLA and a long-term support team, depending on the contract and price.
7
Source Code
DIY with AI
It depends on the service, platform and whether you can export the complete project.
With Me
The source code is yours. Your internal IT team or another developer can take over maintenance and further development.
Software Agency
It depends on the contract, platform and handover arrangements.
Does direct collaboration feel like the right fit?
Who Builds Your Application?
Your project will usually require several different areas of expertise. See which of them I personally cover during development.
Consultant & Analyst
Draws on experience from real-world operations and other projects
Tangible Deliverable:
Clear product requirements and functional and process specifications.
Key Activities & Responsibilities in this Role
1
Understanding the business logic and the problem before proposing a solution
2
Defining key functionality, dependencies and system states
3
Communicating with clients and other team members in language they understand
Do you have specific tech or process requirements?
What Could Our Collaboration Look Like?
See the story of bringing your new software to life
2
Meeting: Architecture, UX and Solution Design
I present the proposed solution, including data structures, integrations with your existing tools and user-interface options. We approve the scope and agree on the next steps.
3
Development & Integration
4
Staging Deployment
We verify all features together using real data and devices.
5
Launch, Handover & 100% Ownership
I hand over all source code, documentation and credentials, then train your team.
Let's take the first step together.
Technologies I Work With
I do not rely on restrictive no-code platforms or bloated commercial lock-in. I build with proven standards led by TypeScript, Node.js, React, React Native and .NET.
TypeScript
React
Node.js / NestJS
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Next.js / Vite
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React Native / Expo
.NET / C#
Delphi
PostgreSQL
MS SQL Server
Redis & Message Queues
Oracle
Do You Have Any Questions?
Answers to the most common questions about collaboration options.
Yes, I have experience integrating enterprise ERP systems (SAP, Helios, Abra, etc.), e-commerce platforms, payment gateways and B2B platforms (carriers, warehousing and banks) using REST/GraphQL APIs, EDI standards, proprietary XML/JSON and other formats.
Yes, I have developed applications for smartphones and rugged barcode mobile terminals (e.g. PSC and Zebra) with barcode scanning support, operator touch panels and specialized software interfacing with industrial scales, label printers, conveyor control systems and vending machines.
Yes. With experience in legacy environments (FoxPro, dBase, Visual Basic, Windows CE / Mobile, Uniface) and languages (Delphi, C++, PHP), I can analyze the existing solution and prepare a modernization plan, including the required changes and new functionality.
An agency offers more capacity, several disciplines at once and better staff coverage. With me, you communicate directly with the person who analyzes, designs and develops the project, so information does not have to pass through several roles. The right choice depends on the scope, required capacity and support model.
It depends on the size of the project, but for smaller applications they often are. In the first meeting, we review your situation, clarify what you need and define the key functions. In the second, I present the proposed architecture, integration approach and user-interface concepts. I then start development and give you ongoing access to a test environment where you can review the result and provide feedback. We adjust the next steps and frequency of consultations to the project.
All source code and rights to the solution I create belong to you. I hand over the code in the agreed repository together with documentation and the necessary access credentials. I structure the project so your internal IT team or another developer can continue working on it.
Yes, for selected tasks. I use AI, for example, to explore solution options, review code or prepare individual parts. I remain responsible for the design, review and resulting code.
Simply think about the problem you need solved or the process you want to automate or accelerate. You don't need technical diagrams or formal specifications—I will handle the technical analysis and architectural proposal. Expect me to ask detailed questions as we explore practical solution options together.
Quick Tip
“Send me a few notes about your operations, system or app idea. I will get back to you promptly to schedule an introductory online meeting.”
Let's Discuss Your Project
A non-binding consultation to review your requirements, solution options and a realistic timeframe and budget.
Confidentiality and NDA
I treat information about your processes and company data as confidential. If requested, I can sign a mutual Non-Disclosure Agreement (NDA) before our meeting.
How I handle form data
The data controller is Roman Banar, Czech company ID 72988363. I use the data only to handle your inquiry. The form sends the message directly to my email inbox. The data is not stored in a database or CRM. If we do not work together, I delete the communication within 12 months. To access, correct or delete your data, email letsconnect@romanbanar.com. The website uses no analytics or marketing cookies.