Web services development with complex business logic
We develop web applications, portals, and platforms—with user accounts, role-based access, integrations, and real business logic. Not showcase websites, but full-fledged working systems.
Review
What are we developing
We develop web applications with complex business logic—systems that include roles, access permissions, user accounts, data processing, and integrations with external services.
Our projects are not template-based CMS websites. They are full-fledged online platforms, internal corporate systems, and client portals that solve real business challenges.
Internal systems with roles, rights, offices, and business processes
Online services for end users with registration and personal account
Connection to external systems via REST API, WebSocket, MCP
Multitenant platforms on a subscription model with scalability
Advantages
Why custom development instead of CMS
A CMS limits you with someone else’s rules.
We build around yours.
Template-based CMSs are a compromise between your requirements and someone else’s product. Custom development is a system that fully aligns with your business processes.
No limitations of plugins or templates. Any logic - any complexity
The structure of the database, APIs, and services is designed for your task, not for someone else's product
No third-party updates that break the system. You control every change
Microservice architecture allows you to grow without rewriting everything from scratch
Opportunities
What is included in development
System Design and Architecture
- Business requirements and problem analysis
- Database structure design
- Services and API architecture
- UI/UX Design in Figma
- Interactive prototype for approval
Frontend development
- Angular — for complex enterprise systems and interfaces
- React — for client portals and SaaS products
- Responsive markup for all devices
- Real-time interfaces via WebSocket
- Performance optimization and Core Web Vitals
Backend development
- Node.js — microservices, REST APIs, and business logic
- FastAPI (Python) — AI services and data processing
- Authentication and role-based access control
- File processing, task queues, and background jobs
- API documentation (Swagger/OpenAPI)
Database and storage
- Relational databases (PostgreSQL, MySQL)
- Document databases (MongoDB)
- Vector databases for AI features (Pinecone, Qdrant)
- Caching (Redis)
- File storage (S3-compatible solutions)
Integrations
- REST APIs and WebSockets for external system integrations
- MCP — connecting AI to enterprise systems
- Payment services (LiqPay, Stripe, Fondy)
- E-signature services (Diia.Signature, Vchasno)
- Push notifications, email, SMS, and messaging platforms
Infrastructure and Deployment
- Docker containerization of services
- GitHub Actions — CI/CD pipeline
- Cloud or on-premise deployment — based on client choice
- SSL, domain setup, and uptime monitoring
- Backups and disaster recovery
Casey
Completed web projects
Real Problems - Real Solutions
E-TOC
Toyota dealers
A platform for managing the service repair area for Toyota dealers. Online booking, workload management, and real-time repair status tracking.
Result: Reducing vehicle check-in time and increasing the transparency of the service area's operations.
Marichka
Subscription model
AI sales manager as a web service — communicates with customers via website and messengers, qualifies leads, and transfers them to CRM.
Result: 24/7 processing of inquiries without manager participation.
Process
How we manage a web project
From brief to launch — transparent and with clear stages.
Brief and evaluation
Task qualification, requirements analysis, scope estimation, and commercial proposal.
Discovery
Requirements gathering, architecture design, UI/UX in Figma, and specification (SRS) approval.
Frontend
Component markup, interface implementation, and responsiveness.
Backend
API, business logic, database, integrations, authentication.
Testing
Functional and regression testing, bug fixes, and performance.
Deployment and support
Production deployment, training, handover of access rights, and SLA support.
For whom
Who is custom web development for
If your business has outgrown template solutions — we are your option
ERP interfaces, portals for employees, accounting and document management systems
Platforms where customers register, order, pay, and track status
Complex multi-sided systems with seller/buyer/admin roles
Subscription-based platforms for selling to other businesses or end users
If your business needs a web system with real logic, we’re the right choice
Discuss project →
Ukrainian
Russian
English