1
Initial Orientation
We discuss the need, available materials, current situation and project goal. For a complex system, this starts the analysis rather than completing the brief.
Software Development from Design to Production
I am your software development partner when off-the-shelf software does not support a critical business process, your in-house prototype has reached its limits, an existing system needs to be taken over and extended or something entirely new needs to be built. I cover analysis, architecture, development, deployment and ongoing evolution.
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 My Experience Can
Help You
New Business Applications
Web, mobile and desktop applications for processes that off-the-shelf software does not support or only covers as part of an unnecessarily extensive package.
Internal and public applications
Web, iOS, Android and desktop
Backend, data and user interface
Taking Over Prototypes and Projects in Progress
Taking over existing code, establishing the actual state of the solution and defining a path from a working prototype or unfinished project to reliable production use.
Assessment of the current state and risks
Completion of missing parts
Preparation for production and further development
Modernizing Existing Systems
Analysis of current behavior, data and integrations. A plan for modernizing, migrating or replacing the system without interrupting operations.
Preserving essential data and functionality
Phased transition to the new solution
Preparation for long-term development
Warehousing, Logistics and Manufacturing
Applications for inventory management, work organization, planning, quality tracking, shipping and other processes used in daily operations.
Mobile terminals and touch panels
Vending and dispensing machines
Carrier integrations
Industrial Applications, IoT and Hardware
Software connected to equipment and operations: barcode readers, PLCs and OPC servers, label applicators, printers, scales or telemetry.
Communication over TCP, USB and serial links
Operator screens and mobile devices
Real-time data collection and monitoring
Enterprise System Integration
Connecting ERP, WMS, e-commerce, mobile applications and external services through APIs, messaging and industry data formats.
Bidirectional synchronization
Synchronous and asynchronous communication
REST, SOAP, EDI and RabbitMQ
Do you need to build a new application, take over a prototype or modernize an existing system?
Tell me about the process or problem. We will define what needs to be delivered and agree on a sensible next step.
Case Study: Complete Modernization of a Large-Scale System
A long-running system in the food industry used in the Czech Republic and Slovakia. Its phased modernization took approximately two years. I worked independently and covered analysis, project management, architecture, development, deployment and user training.
-70 %
Recurring Monthly Operating Costs
A reduction in infrastructure, licensing and associated maintenance costs.
< 1 sec
Average System Response Time
Application monitoring shows an average response time below one second. Selected demanding reports and batch operations were reduced from tens of minutes to seconds.
> 500K
Registered Users
The system’s public websites have more than half a million registered users in total.
> 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
Closed network of IoT devices
ERP integration
Bank and payment gateway integrations
Emailing, reporting and telemetry
Phased modernization during live operation
Continuous consultation and adaptation to current requirements
Source code, repositories and documentation owned by the client
Are you deciding what to do with an existing system?
The first step is to understand its functionality, data, integrations and operational constraints. From there, we can plan its continued development, modernization or replacement.
Which Delivery Model Fits Your Project?
Each option fits a different situation. The right choice depends on complexity, required capacity, responsibility and how much of the work you want to handle yourself.
DIY with AI
With Me
Software Agency
When It Makes Sense
You need to validate an idea or build a simple internal prototype quickly and can specify, assess and operate the result yourself.
You need a new application, a prototype taken over or an existing system extended and want to work directly with the person delivering it.
The project requires several disciplines at once, substantial parallel capacity, permanent cover or round-the-clock support.
Professional Responsibility
You remain responsible for the analysis, decisions, quality of the result and its operation.
I take responsibility for analysis, design, development, deployment and further development within the agreed scope.
The supplier takes responsibility and distributes it across project, analysis, development and operations roles.
Your Time Commitment
Requirements, decisions, checking the result and steering the project all remain your responsibility.
We discuss the process, requirements and key decisions together. I handle delivery and deployment.
The supplier manages the project, but meetings, hand-offs and approvals are still part of the process.
What You Pay
You pay for a time-limited subscription or credits based on actual usage.
You pay directly for one person’s work, with the pricing basis, estimated effort and billing terms agreed in advance.
You pay agency rates that include the cost of the team and running the company.
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.
Handover and Ownership
It depends on the service, platform and whether you can export the complete project.
The client owns the source code, documentation, runtime environment and repositories.
It depends on the contract, platform and handover arrangements.
1
When It Makes Sense
DIY with AI
You need to validate an idea or build a simple internal prototype quickly and can specify, assess and operate the result yourself.
With Me
You need a new application, a prototype taken over or an existing system extended and want to work directly with the person delivering it.
Software Agency
The project requires several disciplines at once, substantial parallel capacity, permanent cover or round-the-clock support.
2
Professional Responsibility
DIY with AI
You remain responsible for the analysis, decisions, quality of the result and its operation.
With Me
I take responsibility for analysis, design, development, deployment and further development within the agreed scope.
Software Agency
The supplier takes responsibility and distributes it across project, analysis, development and operations roles.
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 process, requirements and key decisions together. I handle delivery and deployment.
Software Agency
The supplier manages the project, but meetings, hand-offs and approvals are still part of the process.
4
What You Pay
DIY with AI
You pay for a time-limited subscription or credits based on actual usage.
With Me
You pay directly for one person’s work, with the pricing basis, estimated effort and billing terms agreed in advance.
Software Agency
You pay agency rates that include the cost of the team and running the company.
5
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.
6
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.
7
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.
8
Handover and Ownership
DIY with AI
It depends on the service, platform and whether you can export the complete project.
With Me
The client owns the source code, documentation, runtime environment and repositories.
Software Agency
It depends on the contract, platform and handover arrangements.
Does direct collaboration fit your project?
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?
How Can Your Project Be Delivered?
A few meetings may be enough to design a smaller application. Taking over or modernizing a complex system requires deeper analysis, multiple stages and ongoing decisions.
2
Analysis and Solution Design
I prepare the solution design from the available materials, operational needs and technical constraints. On a larger project, we refine it in stages.
3
Iterative Development
Features are delivered in the agreed order. We continuously address integrations, data, security and changes arising from real operations.
4
Validation in Staging
We validate the functionality against real scenarios, data, integrations and devices relevant to the project.
5
Deployment, Handover and Evolution
Once validated, I deploy the solution, hand over the agreed documentation and access, train the users and provide the agreed support and further development.
Let us start by mapping your situation.
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#
PostgreSQL
MariaDB
Redis & Message Queues
Docker
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.