The system works, but is hard to change
Business logic is spread across screens, scripts, callbacks, manual fixes, and old modules. Changes are risky because ownership boundaries are unclear.
Technology company
High-load systems for payments, marketplaces, operations, and mobile products
Subbclub designs and develops backend platforms, financial processing systems, loyalty marketplaces, Telegram-connected workflows, operational dashboards, healthcare service systems, and mobile applications for Apple and Android platforms.
Public technology brand operated by RATSIOSERVIS, TOO.
About
About the company
Subbclub is a highload systems technology brand focused on the design, development, and implementation of reliable software systems for business-critical environments.
Subbclub experience includes enterprise banking loyalty infrastructure, payment orchestration, rehabilitation-service coordination, Telegram-community administration, delivery marketplace operations, and mobile application publishing.
The company builds the parts that usually decide whether a system remains maintainable: domain models, role boundaries, auditability, API contracts, background processing, operational dashboards, payment states, and clean separation between public interfaces and internal workflows.
When to contact us
When backend, payments, and operations outgrow a simple product team
Subbclub is useful when a system already carries real business state and needs stronger architecture, better operational control, or a production-ready backend foundation.
Payments, orders, or balances need control
Statuses, callbacks, retries, corrections, reports, and reconciliations need traceable workflows instead of manual investigation.
Operators need a real back office
Support, finance, vendors, couriers, clinics, merchants, or administrators need tools built around their workflow, not just generic CRUD screens.
Telegram, web, and mobile need one backend
Public interfaces should stay thin while business rules, permissions, payments, commands, and audit remain in a controlled backend layer.
The product needs rescue or stabilization
Failures, slow paths, missing logs, fragile workers, unclear deployment, and hidden operational risk need a practical recovery plan.
An MVP is no longer enough
The next step requires explicit state, roles, API contracts, worker processes, documentation, deployment structure, and handover discipline.
Entry points
Ways to start
Work can start with a focused review, stabilization effort, operational design, or full-cycle implementation. The first step should match the current risk level of the system.
Architecture and legacy audit
Review system boundaries, domain models, data flows, queues, integrations, deployment structure, failure modes, and roadmap priorities.
Payment and order workflow review
Analyze statuses, callbacks, retries, terminal routing, reconciliation points, manual corrections, finance views, and support procedures.
Operational dashboard design
Design administrator, operator, vendor, merchant, courier, clinic, or support tools around actual work, permissions, audit, filters, exports, and decisions.
Backend rescue and stabilization
Stabilize production systems with clearer observability, worker control, deployment discipline, queue handling, error investigation, and recovery paths.
Full-cycle implementation
Design and build backend APIs, dashboards, integrations, worker subsystems, mobile-backed services, documentation, and production rollout paths.
Long-term product engineering
Maintain and evolve business-critical systems where architecture, production behavior, operational tools, and documentation matter over time.
Services
Core areas of expertise
Subbclub provides engineering services across backend platforms, payment and loyalty processing, marketplace operations, administrative systems, Telegram-connected products, healthcare workflows, network-oriented systems, and mobile applications.
High-load backend platforms
Design and development of backend systems for high request volumes, concurrent operations, distributed workflows, multi-environment deployments, and business-critical workloads.
Financial processing and payment orchestration
Payment routing, transaction workflows, provider callbacks, terminal rules, merchant APIs, reconciliation logic, loyalty points processing, finance views, and operational monitoring.
Marketplace and order platforms
Catalogs, carts, offers, orders, supplier APIs, vendor cabinets, courier workflows, delivery calculation, product imports, status lifecycles, and administrator supervision.
Administrative systems and operational dashboards
Internal control panels, ARM-style administration, role-based access control, operator workflows, audit logs, reporting, imports, exports, settings, and support tooling.
Telegram-connected products
Telegram web app flows, bot synchronization boundaries, community administration, paid-access workflows, command queues, and operational tools that keep business rules outside the bot layer.
Healthcare and service workflow platforms
Multi-role systems for coordinated services: patient or client accounts, provider cabinets, doctor or specialist workflows, administrative dashboards, files, orders, and API-backed mobile integration.
Network and infrastructure-oriented systems
Development and integration of network-oriented systems, secure connectivity solutions, service routing, access control mechanisms, worker processes, and infrastructure automation tools.
Mobile applications for Apple and Android
Mobile applications for iOS and Android, including utility applications, client-facing interfaces, API integrations, business workflows, and platform-specific deployment preparation.
Deliverables
What the work produces
Subbclub delivers the technical and operational parts needed to run a complex product, not only individual feature screens.
- Backend services and API layers
- OpenAPI specifications and integration documentation
- Administrative panels and ARM-style operator tools
- Payment, order, membership, and delivery state machines
- Worker queues, scheduled jobs, imports, exports, and callback processors
- Reconciliation, reporting, finance, and operational-control views
- Role models, RBAC, audit logging, and sensitive-data boundaries
- Deployment structure, logs, monitoring points, and handover documentation
Engineering patterns
Engineering approach
Subbclub builds operational systems with clear state, roles, integrations, and long-term maintainability. Application interfaces are supported by explicit workflows, administrative tools, APIs, background processing, and observable operational boundaries. See the engineering principles.
Business state machines
Orders, payments, memberships, rehabilitation requests, delivery tasks, loyalty operations, and provider callbacks are modeled as explicit workflows instead of loose screens.
Roles, permissions, and audit
Administrator, operator, vendor, courier, doctor, clinic, merchant, member, and customer roles are separated with access rules, audit trails, and operational visibility.
API and provider boundaries
Supplier APIs, merchant APIs, payment providers, Telegram bots, mobile applications, and external service integrations are treated as documented boundaries with controlled data flow.
Background processing
Worker queues, CLI processes, scheduled jobs, imports, exports, callbacks, reporting tasks, and operational logs are part of the system design, not an afterthought.
Enterprise deployment experience
The banking loyalty platform demonstrates multi-year operation, 20M+ users at peak, 1.5M active offers and products, and a 100+ server platform footprint.
Sensitive data boundaries
Systems are designed with clear separation for credentials, personal data, provider secrets, private URLs, internal identifiers, operational records, and externally visible interfaces. See the security and confidentiality approach.
Apple and Android
Mobile development
The company develops mobile software for Apple and Android platforms, including utility applications and API-backed interfaces for business systems, financial services, marketplaces, healthcare workflows, booking-style services, and internal operational tools. See the projects section for examples.
- iOS applications
- Android applications
- API integrations
- Business workflows
- Marketplace and service interfaces
- Telegram web app integration
- Deployment preparation
Featured enterprise case study
Bank Loyalty Marketplace and Processing Platform
A large-scale loyalty marketplace and independent points-processing platform developed for a major bank. During several years of operation, the system combined a user portal, supplier APIs, catalog and order workflows, administrative ARM, reporting, worker operations, and a separate financial processing subsystem.
Multi-year
enterprise operation
20M+
users at peak scale
1.5M
active product and offer listings
100+
servers in the enterprise platform footprint
3
author-owned patents connected with the project
Enterprise breadth
User loyalty portal, catalog marketplace, travel services, partner integrations, support workflows, reporting, and administrative operations.
Multi-layer API platform
Versioned supplier offer APIs, backend/mobile-style API documentation, REST workflows, technical APIs, logs, and API-user management.
Independent processing
Separate loyalty-points and financial-processing subsystem for accrual, spending, cash/bonus operations, corrections, invoices, and reports.
Cooperation
How cooperation works
Complex systems should not be estimated blindly. A practical start is a short brief, technical discovery, and a clear next-step plan.
Intro call or brief
Describe the system, current pain points, production constraints, active integrations, and the decision that needs to be made.
Technical discovery
Review architecture, workflows, data boundaries, deployment, logs, queues, integrations, permissions, and operational procedures.
Architecture and roadmap
Define risks, priorities, implementation sequence, quick wins, stabilization work, and longer-term system structure.
Implementation
Build or improve backend services, APIs, dashboards, workers, integrations, role models, reports, and documentation.
Rollout
Prepare staging, production deployment, migrations, monitoring points, operational checks, and recovery procedures.
Handover and support
Document the system, explain operational workflows, transfer knowledge, and support the product after release.
Implemented web systems and mobile application projects.
Featured case study
Bank Loyalty Marketplace and Processing Platform
A high-load banking loyalty ecosystem with 20M+ users at peak, 1.5M active offers/products, multi-layer APIs, user portal, administrative ARM, workers, reporting, and independent points processing.
Case studyMobile Rehabilitation
A digital platform for coordinating rehabilitation services after injuries or surgery, connecting patient workflows with clinics, doctors, administrative tools, backend APIs, and mobile integrations.
Case studyPayment Orchestration Platform
A backend platform for multi-provider payment operations, combining merchant API access, terminal routing, provider callbacks, operator workflows, background workers, finance views, and operational monitoring.
Case studyTelegram Club Administration Platform
A back-office platform for community operations, combining member registry, contribution ledger, status and privilege rules, RBAC, audit, debtor reporting, and synchronization controls.
Case studyUVBikes Delivery Marketplace Platform
A vendor-based delivery marketplace with Telegram web app ordering, product catalogs, carts, online payment initiation, vendor cabinet, courier workflow, administrator panel, and background workers.
ApplicationAntishrink
A simple application focused on comfort and utility, with a clear privacy policy and official support contact.
Contact and legal
Contact
Send a short description of your system, current pain points, production constraints, and the decision you need to make. Work can start with an architecture review, backend rescue, payment workflow audit, operational dashboard design, or full-cycle implementation.