What this service covers
SaaS development at Kalenux means thinking about the product as a business, not just writing code for a subscription app. The data model needs to support the subscription tiers. The authentication system needs to know which user is on which plan and enforce access accordingly. The admin panel needs to let the operator manage users, refund payments, and read usage trends at a glance. The email system needs to send the right message at the right time. All of these pieces are designed to work together from day one - not assembled separately and connected later.
Kalenux was built this way: a complete SaaS product with subscriptions, payment processing, an admin dashboard, content management, and multilingual content architecture - all built and operated by Kalenux. That experience of building and running a live SaaS product informs how we approach every client SaaS engagement. We know what breaks, what scales, and what looks fine in development but becomes a problem in production.
For B2B SaaS products where each customer organisation is a separate tenant with isolated data, we design the data model and API authentication layer to support multi-tenancy from the start. Adding multi-tenancy to an existing single-tenant architecture is one of the most expensive migrations a SaaS product can go through. Building it in from the beginning costs very little by comparison.
Deliverables and outcomes
Subscription and billing integration
Stripe integration covering subscription plans, trial periods, upgrade/downgrade flows, payment failure handling, webhook processing, and invoice generation. Or an alternative payment provider if required.
User authentication and authorisation
Registration, login, email verification, password reset, and two-factor authentication. Role-based access control (RBAC) with user, admin, and custom role support.
Admin and operator dashboard
A management interface for the product operator: user management, subscription management, manual refunds, usage metrics, support ticket view, and content or configuration management.
Email notification system
Transactional emails for registration, verification, password reset, subscription events, and custom triggers. HTML email templates, delivery logging, and unsubscribe handling.
Usage analytics
Track what users do inside the product: feature usage, retention metrics, subscription conversion funnels. Presented in the admin dashboard for the operator.
Multi-tenancy support
For B2B products, a data architecture where each customer organisation is a separate tenant with isolated data and configurable settings. Tenant-scoped queries throughout the API.
API for third-party integrations
A documented API that allows customers to integrate the product with their own tools, automate operations, or build on top of the platform.
Deployment and operations handover
Production-ready deployment, monitoring setup (uptime checks, error alerting), and an operations runbook so the operator can manage the platform independently.
Our process
SaaS projects require a product scoping phase that goes beyond technical requirements. We need to understand the subscription tiers, the target customer, the operator's workflows, and the key metrics before touching the data model. The architecture decisions that follow from that conversation are the ones that determine whether the product is maintainable at scale.