Custom SaaS Application
A proven internal tool needed to become a commercial product. That meant solving tenancy, billing, onboarding, security and scale — none of which the internal version had ever needed.
- Project type
- Multi-tenant SaaS
- Industry
- Software products
- Domain
- Business
- Delivery
- Tenancy and billing, then onboarding and scale
Technologies
- Next.js
- Spring Boot
- PostgreSQL
- Kubernetes
- Redis
- Billing APIs
- Isolation
- Data layer
- Billing
- Self-service
- Scaling
- Horizontal
These describe scope and architecture. We do not publish performance figures we cannot substantiate.
Business problem
A proven internal tool needed to become a commercial product. That meant solving tenancy, billing, onboarding, security and scale — none of which the internal version had ever needed.
Our approach
Tenancy was introduced at the data layer with isolation enforced below the application logic, so a query cannot accidentally cross tenants. Billing, metering and onboarding were built as first-class subsystems rather than bolted on before launch.
Result
The product launched able to sell to customers on day one: self-service signup, subscription billing, enforced plan limits, and a support console with audited access for troubleshooting.
Key features
The capabilities that mattered most to the outcome.
- Tenant isolation with per-tenant configuration and branding
- Subscription plans, trials, upgrades and proration
- Self-service signup and guided onboarding
- Usage metering with plan-limit enforcement
- Support console with audited impersonation
Technologies used
Chosen for the requirement rather than by habit — we explain the trade-offs before building.
Your project would not necessarily use the same stack. We choose per requirement, and we will explain the reasoning before anything is committed.
Need something like this?
Tell us how your situation compares. We will outline what would carry over, what would differ, and what it would take to deliver.
Related work
Other systems in the same domain.
Business
Operations platform
Business Management Platform
Professional services
- Business problem
- Operations ran on a growing set of spreadsheets shared over email. Status was whatever the last person remembered, approvals happened in chat, and monthly reporting took several days of manual consolidation.
- Result
- Operations now run from one system with a live status view and an audit trail. Management reporting is generated from source records rather than rebuilt each month, and process knowledge lives in the software rather than in individual memory.
Key features
- Configurable modules for enquiries, projects, vendors and payments
- Maker-checker approval flows with delegation
- Role-based dashboards from executive summary to task level
- Java
- Spring Boot
- React
- PostgreSQL
- Docker
- +1 more
Business
Headless commerce
E-Commerce Application
Retail & D2C
- Business problem
- A hosted storefront could not express B2B price tiers alongside retail pricing, and plugin sprawl had pushed page load times to the point where mobile shoppers abandoned before the catalogue rendered.
- Result
- One storefront now serves both retail and trade customers with correct pricing for each. Product pages render fast on mid-range mobile devices, and the business owns its customer and order data outright.
Key features
- Catalogue with variants, bundles and customer-specific price lists
- Multi-warehouse inventory with reservation logic
- Payment gateway integration with retry and reconciliation
- Next.js
- Node
- PostgreSQL
- Redis
- Cloud storage
- +1 more
Business
Point of sale
Billing & POS System
Retail & pharmacy
- Business problem
- Peak-hour queues were driven by billing software that required mouse navigation for routine actions, and any internet interruption stopped sales entirely. Stock and sales data only reconciled at long intervals.
- Result
- Counters keep operating through network outages, billing is faster per transaction, and stock, sales and tax records agree by construction rather than by periodic reconciliation.
Key features
- Keyboard-first billing with barcode scanning
- Offline mode with automatic reconciliation on reconnect
- Configurable tax slabs and compliant invoice formats
- React
- FastAPI
- PostgreSQL
- Redis
- Linux
- +1 more
Have a Project in Mind? Let’s Build It.
Tell us what your business needs. We scope the solution, recommend the right architecture and give you a clear plan — design, build, deploy, maintain and grow.