You will get Full Business Management System — WEB App + Admin Platform
Project details
Some businesses need more than a booking page. They need a complete operational system — one that handles everything customers interact with and gives the owner full control over how the business runs day to day.
This package is the full build. A customer-facing web application on one side. A complete admin and management platform on the other. Both connected, both production-ready, both yours.
The process starts with a scoping session where I map out exactly what gets built. Nothing starts until the scope is agreed and approved. From there I build both sides of the system and deliver a working, deployed product with a full handoff walkthrough.
Typical scope includes: customer-facing app with booking, scheduling, or interactive UI; admin platform with full operational management, user roles, data dashboards, and reporting; database design and deployment setup.
Built for businesses replacing a combination of spreadsheets, phone calls, and paper records with one system that actually runs the operation.
This package is the full build. A customer-facing web application on one side. A complete admin and management platform on the other. Both connected, both production-ready, both yours.
The process starts with a scoping session where I map out exactly what gets built. Nothing starts until the scope is agreed and approved. From there I build both sides of the system and deliver a working, deployed product with a full handoff walkthrough.
Typical scope includes: customer-facing app with booking, scheduling, or interactive UI; admin platform with full operational management, user roles, data dashboards, and reporting; database design and deployment setup.
Built for businesses replacing a combination of spreadsheets, phone calls, and paper records with one system that actually runs the operation.
Programming Languages
JavaScript, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance OptimizationWhat's included $3,500
These options are included with the project scope.
$3,500
- Delivery Time 42 days
- Number of Revisions 2
- Design Customization
- Responsive Design
- Source Code
Optional add-ons
You can add these on the next page.
Additional Revision
+$200Frequently asked questions
About Konstantin
Web Developer | Customer Portals, Admin Dashboards & Booking Apps
Pazardzhik, Bulgaria - 2:48 pm local time
If you're managing bookings, appointments, or customer flow without a proper system, you already know the cost: double-bookings, lost records, staff time wasted on admin, and zero visibility into what's actually happening in your business.
I build the system that replaces all of that.
For one of my clients — a restaurant managing 160 seats — reservations were tracked by hand in a notebook. Tables got double-booked. Phone numbers got lost. I replaced the entire process with a custom booking platform: customers book online through an interactive table map, and the owner manages availability, floor plan, and reservations from a single admin panel. The notebook is gone.
I am currently completing a similar system for a multi-doctor clinic — replacing appointment spreadsheets with a patient-facing booking system and a shared admin panel for four practitioners.
I build these kinds of systems for any business running operations manually: restaurants, clinics, service businesses, and more. Every project has two sides — a clean, functional front end for your customers, and a management panel for you to run your operations without relying on anyone else.
What I typically build:
Customer-facing booking and appointment systems
Admin and management dashboards
Interactive floor plans and availability calendars that customers use directly
Internal tools that replace spreadsheets and manual workflows
Built with TypeScript, React (Vite), Node.js/Express, and PostgreSQL (Prisma).
Currently taking on new clients at an introductory rate — happy to start with a scoped discovery session before any larger commitment. Send me a message or invite me to your job and I'll tell you exactly how I'd approach it.
Steps for completing your project
After purchasing the project, send requirements so Konstantin can start the project.
Delivery time starts when Konstantin receives requirements from you.
Konstantin works on your project following the steps below.
Revisions may occur after the delivery date.
Discovery & scoping session
A structured session where I map out your full system: every user type, every workflow, every screen. You receive a written scope document before development begins. Nothing is built without your approval.
Database & architecture design
I design the data structure and system architecture. This is the foundation everything else runs on. Done right here so nothing needs to be rebuilt later.