# Subbclub Official website: https://subbclub.com/ Corporate profile: https://subbclub.com/corporate-profile/ Security and confidentiality: https://subbclub.com/security-confidentiality/ Engineering principles: https://subbclub.com/engineering-principles/ R&D experiments: https://experiments.subbclub.com/ Public brand: Subbclub Legal entity: RATSIOSERVIS, TOO D-U-N-S Number: 989372270 Official domain: subbclub.com Primary contact: contact@subbclub.com Developer contact: developer@subbclub.com Support contact: info@subbclub.com ## Summary Subbclub is a highload systems technology brand focused on the design, development, and implementation of reliable software systems for business-critical environments. Subbclub designs and develops high-load backend platforms, payment and loyalty processing systems, marketplaces, operational dashboards, Telegram-connected workflows, healthcare service systems, network-oriented systems, and mobile applications for Apple and Android platforms. Subbclub experience includes enterprise banking loyalty infrastructure, payment orchestration, rehabilitation-service coordination, Telegram-community administration, delivery marketplace operations, and mobile application publishing. Subbclub builds domain models, role boundaries, auditability, API contracts, background processing, operational dashboards, payment states, and clean separation between public interfaces and internal workflows. ## Core Areas Of Expertise - High-load backend platforms: 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, including patient or client accounts, provider cabinets, doctor or specialist workflows, administrative dashboards, files, orders, and API-backed mobile integration. - Network and infrastructure-oriented systems: network-oriented systems, secure connectivity solutions, service routing, access control mechanisms, worker processes, and infrastructure automation tools. - Mobile applications for Apple and Android: utility applications, client-facing interfaces, API integrations, business workflows, and platform-specific deployment preparation. ## When To Contact Subbclub is relevant when backend, payment, order, marketplace, mobile, Telegram, or operational logic has outgrown a simple product team. Common situations: - A working legacy system is difficult to change safely. - Payments, orders, balances, callbacks, retries, corrections, or reports require clearer control. - Operators, support teams, finance teams, vendors, couriers, clinics, merchants, or administrators need a real back office. - Telegram, web, and mobile interfaces need one controlled backend layer for business rules. - A production system needs rescue, stabilization, observability, worker control, or clearer deployment discipline. - An MVP needs to become a maintainable production system with explicit state, roles, API contracts, documentation, and handover. ## Entry Points - 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 real workflow, permissions, audit, filters, exports, and decisions. - Backend rescue and stabilization: improve 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. ## Deliverables And Stack Common deliverables: - 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 Technology map: - Backend: PHP, Go, Python where appropriate - Data: MongoDB and relational databases where needed - Queues and workers: RabbitMQ, Supervisord, cron, CLI workers - APIs: REST, OpenAPI, provider callbacks - Infrastructure: Linux, Docker, Nginx, logs, monitoring points - Mobile and channels: iOS, Android, Telegram web apps, API-backed interfaces ## Cooperation Process 1. Intro call or brief 2. Technical discovery 3. Architecture and roadmap 4. Implementation 5. Staging and production rollout 6. Handover and support ## Recurring Engineering Patterns Engineering principles page: https://subbclub.com/engineering-principles/ - Business state machines: orders, payments, memberships, rehabilitation requests, delivery tasks, loyalty operations, and provider callbacks are modeled as explicit workflows. - 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. - 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 separate credentials, personal data, provider secrets, private URLs, internal identifiers, operational records, and externally visible interfaces. Additional principles: - Explicit state over implicit flags. - Admin tools are part of the product. - Business events should be observable. - Background jobs are first-class system components. - Payment and order flows need recovery paths. - APIs are contracts, not controllers. - Role boundaries are architecture. - Sensitive data is never demo material. - Documentation must survive handover. ## Security And Confidentiality Security and confidentiality page: https://subbclub.com/security-confidentiality/ Subbclub public materials explain engineering scope without exposing private implementation details. Public case studies may describe system type, business context, operational problem, architecture, interfaces, role boundaries, workflows, integration categories, and verified scale indicators. Sensitive materials are handled through access and publication boundaries: client names, partner names, user records, patient data, member data, Telegram identifiers, customer details, operator names, passwords, API keys, provider secrets, bot tokens, terminal keys, certificates, private configuration, account data, private domains, live endpoints, server addresses, internal environment names, exact infrastructure topology, database names, raw logs, callback payloads, transaction IDs, order IDs, internal notes, receipts, balances, support records, operational dumps, and compliance/SLA claims require the right review context before use. Deeper technical proof can be discussed privately when the scope, access model, and confidentiality requirements are clear. The security and confidentiality page describes an engineering and public-disclosure approach, not a public security audit, legal opinion, compliance certificate, or guarantee of a specific regulatory status. ## Mobile Development Subbclub 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. Capabilities include: - iOS applications - Android applications - API integrations - Business workflows - Marketplace and service interfaces - Telegram web app integration - Deployment preparation ## Public Projects Projects index: https://subbclub.com/projects/ ### Bank Loyalty Marketplace and Financial Processing Platform Project page: https://subbclub.com/projects/bank-loyalty-marketplace-platform/ Bank Loyalty Marketplace and Financial Processing Platform was a large-scale enterprise system for a major bank loyalty program. Developed and operated over several years, it reached more than 20 million users at peak and handled around 1.5 million active product and offer listings. The platform combined a user-facing loyalty marketplace, personal cabinet, catalog and order workflows, travel and partner-service integrations, multi-layer supplier and backend APIs, a large administrative ARM panel, reporting and analytics, worker/CLI background processing, multi-environment deployment, and a fully independent loyalty-points/financial processing subsystem. The project ran across 100+ servers, used separate dev/test/stage/UAT-style environments, and included proprietary technical work connected with three author-owned patents. The public project page focuses on system architecture, platform scope, operational roles, processing, APIs, reporting, worker operations, and verified scale indicators. ### Mobile Rehabilitation Project page: https://subbclub.com/projects/mobile-rehabilitation/ Mobile Rehabilitation (Мобильная реабилитация) is a developed and implemented digital platform for coordinating rehabilitation services after injuries or surgery. The system includes a patient account, backend API, administrative dashboard, clinic cabinet, doctor cabinet, payment/order workflows, file handling, and mobile integrations through the platform API. The public project page focuses on the coordination workflow, role-specific cabinets, administrative layer, backend API, files, orders, payments, and mobile integrations. ### Payment Orchestration Platform Project page: https://subbclub.com/projects/payment-orchestration-platform/ Payment Orchestration Platform is a fintech/backend case study for a platform that routes, processes, tracks, and reconciles merchant payment operations across multiple external payment providers. The system includes a merchant API, merchant cabinet, operator workflow, administrative dashboard, terminal-based routing, provider callback processing, background workers, finance and balance views, operational logs, and error monitoring. The platform operates in a PCI DSS payment context. The public project page focuses on payment-channel routing, merchant API access, provider callbacks, operator workflows, finance views, background workers, and operational monitoring. ### Telegram Club Administration Platform Project page: https://subbclub.com/projects/telegram-club-admin/ Telegram Club Administration Platform is a community-operations/backend case study for a platform that helps administrators manage membership contributions, participant records, statuses, privileges, and community operations. The system includes a member registry, member profiles, payment ledger, payment-period calculation, debtor reporting, tariffs and capabilities, role-based access control, operator audit, settings management, import/export tooling, and a database-backed command/status boundary for Telegram bot synchronization. The public project page focuses on membership contribution control, participant records, statuses, privileges, role-based administration, audit, reporting, and synchronization controls. ### UVBikes Delivery Marketplace Platform Project page: https://subbclub.com/projects/uvbikes-delivery-marketplace/ UVBikes Delivery Marketplace Platform is a logistics-commerce/backend case study for a vendor-based delivery marketplace with Telegram web app ordering, catalog, cart, online payment initiation, vendor cabinet, courier workflow, administrator panel, OpenAPI documentation, and background workers. The system includes user ordering flows, vendor product and order management, courier Telegram workflows, delivery address lookup and price calculation, payment initialization and status handling, MongoDB-backed operational data, RabbitMQ/Supervisord workers, API and Telegram bot logs, and deployment separation across API, vendor, courier, administrator, and user-facing contexts. Vendor and restaurant identity is visible inside the marketplace workflow: customers can see which shop or restaurant they order from, and vendors manage their own catalog and orders. The public project page focuses on Telegram ordering, catalog and cart flow, vendor and courier operations, delivery calculation, payment initiation, administrator tools, workers, and commercial settlement logic. ### Antishrink Project page: https://subbclub.com/projects/antishrink/ Privacy policy: https://subbclub.com/projects/antishrink/privacy.html Legacy privacy URL: https://subbclub.com/privacy/ Antishrink is a simple application focused on comfort and utility. It does not require registration or account creation. The Antishrink application does not collect, store, or process any personal data. ## Machine-Readable Notes This file is intended to give search engines, AI agents, and automated verification systems a concise, plain-text description of the company, domain ownership context, services, and official contacts. The canonical public page is https://subbclub.com/.