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Used for
- Business websites
- Online stores
- Web apps
- Customer portals
Industry · SaaS
Engineering for SaaS companies
Tenancy, billing, enterprise features and roadmap capacity.
At a glance
The short version
What it is
Engineering for SaaS companies: multi-tenant architecture, subscription billing, enterprise features and roadmap capacity after early traction.
- What we build
- How it works
- Sign-up flow
- Web app
- Billing layer
- Payment gateway
- 2 more
- Runs on
- Web app
- Admin
- Cross-platform
- PWA
- Built with
- Who it's for
SaaS products must serve many customers from one codebase, bill them correctly every cycle and earn renewals. We help Indian SaaS teams from their first tenancy model to enterprise readiness.
- Cost depends on
- Tenancy model
- Billing complexity
- Enterprise features
How to start
Tell us what you need in your own words. You talk to the developers who would build it and get a written, line-item estimate.
Get a project estimateWhat SaaS teams need from an engineering partner
A SaaS product is judged on things a demo never shows: whether tenant data stays isolated, whether mid-cycle upgrades prorate correctly, whether an admin can revoke a leaver's access in one click. Fixing them early is far cheaper than after the first large deal.
Early-stage founders want an MVP with tenancy, sign-up and billing done properly. Established companies want capacity for a module, mobile app, public API or enterprise push while their core team stays on the roadmap.
Challenges
Problems that surface as a SaaS product grows
Tenant isolation added late
Scoping bolted on later leaves gaps; enforce it in the data layer.
Billing that outgrows the plan table
Seats, usage meters, proration, dunning and GST invoices need a real billing model.
Enterprise checklists
SSO, SCIM provisioning, audit logs and granular roles arrive with security questionnaires.
Noisy neighbours
Queues and rate limits stop one heavy tenant slowing everyone.
Solutions
SaaS products we can help you build
Across 3 areas
Multi-tenant SaaS products with AI at their core, built with tenant isolation, usage metering, model routing, evaluation and subscription billing.
Custom CRM software that captures leads from every channel, keeps follow-ups on schedule and shows managers a live pipeline.
Custom HRMS covering attendance, leave, payroll with Indian statutory deductions, onboarding and an employee self-service app.
Custom fleet management software for GPS tracking, trips, driver apps, compliance reminders, maintenance and freight billing.
Custom scheduling software for consultants, service centres, labs and multi-location businesses: availability rules, reminders, payments and calendar sync.
Custom property management software for leases, rent collection with UPI AutoPay, maintenance requests, owner statements and society operations.
Building blocks most SaaS products need
Self-serve onboarding
Sign-up, invites and a first-run flow to the first useful action.
Plans, seats and metering
Limits in code; Stripe abroad, Razorpay with UPI AutoPay in India.
SSO and audit logs
SAML or OIDC via Google Workspace, Entra ID or Okta, plus audit trails.
API and webhooks
Versioned endpoints, scoped keys and signed webhooks with retries.
Admin console
Support staff adjust plans and view usage safely.
How it works
How a customer moves from sign-up to renewal
Each step is something your product must handle on its own, for every tenant and every billing cycle.
- Sign-up flow
Step 1: A company signs up
An admin creates an account and the system sets up a new tenant with its own data boundary, default roles and a trial plan, with no one on your team involved.
- Web app
Step 2: The team is invited and onboarded
The admin invites colleagues or connects Google Workspace or Entra ID for single sign-on, and a first-run checklist leads everyone to the first useful result.
- Billing layer
Step 3: Usage is metered
Seats, projects or API calls are counted against plan limits, and customers see their usage well before they reach a limit.
- Payment gateway
Step 4: Invoice raised and paid
At the end of each cycle a GST invoice is raised and the card or UPI AutoPay mandate is charged; a failed payment starts a polite retry sequence.
- API and webhooks
Step 5: Integrations keep data moving
Customers connect their own tools with scoped API keys and receive signed webhooks when records change, so your product fits into their workflow.
- Admin console
Step 6: Support, health and renewal
Your support team sees the account's plan, usage and audit log to help safely, and customer success spots accounts at risk before renewal.
Then it starts again at step 1: A company signs up
Platforms
Where your customers will use it
- Web
Web application
Browser-based applications with logins, roles and workflows, such as customer portals, SaaS products and internal tools.
- Back office
Admin dashboard
Back-office panels for operations, support and finance teams: orders, users, content, reports and permissions.
- Mobile
Cross-platform mobile app
One Flutter or React Native codebase for Android and iOS, with native modules where a feature needs them.
- Web
Progressive web app
Installable web apps with offline support and notifications, useful when an app-store listing isn't essential or phones have little storage.
Technology
Technologies behind our SaaS builds
Next.js and NestJS form the product and its API, PostgreSQL enforces the boundary between tenants, Docker keeps every environment identical on hosting built on AWS, and Stripe or Razorpay handle international and Indian billing.
Web
React
Builds interactive screens in the browser, such as dashboards, admin panels and portals, that respond instantly as your team works.
Used for
- Web apps
- Admin panels
- Dashboards
- Customer portals
Backend
NestJS
A structured way to build back ends on Node.js, so large business systems stay organised, testable and easy to hand over.
Used for
- Business app back ends
- SaaS platforms
- Marketplaces
- Admin panel back ends
Backend
Node.js
Runs the server side of apps: fast, scalable back ends that power your app, website and integrations.
Used for
- App back ends
- Live order tracking
- Chat and notifications
- Payment processing
Data
PostgreSQL
A reliable database for the records your business runs on: orders, payments, bookings and stock, kept accurate and easy to report on.
Used for
- Orders and customers
- Payments and ledgers
- Stock and inventory
- Bookings
Data
Redis
Keeps frequently used data in fast memory, so apps stay quick on busy days and live features like order tracking feel instant.
Used for
- Faster apps
- Live order status
- Shopping carts
- Job queues and alerts
Cloud & DevOps
Docker
Packages your software so it runs the same way on every laptop and server, which makes releases predictable and moving hosts easier.
Used for
- Reliable releases
- Same setup everywhere
- Faster onboarding
- Easy scaling
Cloud & DevOps
AWS
Cloud hosting for your app, website and data, with data centres in India and room to grow when traffic rises.
Used for
- App hosting
- File and photo storage
- Backups
- Busy sale days
Payments & maps
Stripe
Accepts card payments and subscriptions from customers outside India, in many currencies, with automatic invoices and renewals.
Used for
- International payments
- SaaS subscriptions
- Card payments
- Marketplace payouts
Payments & maps
Razorpay
Lets customers in India pay by UPI, cards, netbanking or wallets, and handles subscriptions, refunds and payouts to sellers or partners.
Used for
- UPI payments
- Cards and netbanking
- Subscriptions
- Payment links
Plain-English glossary
SaaS terms, in plain English
- Multi-tenant architecture
- One running product serving many customer organisations (tenants), each seeing only its own data. It keeps hosting cost per customer low, but the separation must be enforced in the data layer, not left to each screen.
- Proration
- Charging for part of a billing period when a customer upgrades, adds seats or cancels mid-cycle. Getting it right avoids overcharges, refunds and awkward support tickets.
- Dunning
- The automatic sequence after a failed payment: retries, reminder emails and eventually a restricted account. Done well, it recovers revenue without annoying customers whose card simply expired.
- SSO and SCIM
- Single sign-on lets a customer's staff log in with their company account, such as Microsoft Entra ID, instead of a separate password; SCIM provisioning then creates and removes their user accounts automatically. Their IT team controls access in one place, which is why larger customers ask for both.
- Webhook
- An automatic message your product sends to a customer's system the moment something happens, such as 'invoice paid'. Signed webhooks with retries let customers build integrations without constantly polling your API.
Comparison
Choosing a multi-tenancy model
| Shared tables with tenant ID | Schema per tenant | Database per tenant | |
|---|---|---|---|
| Isolation | Logical, via code and row-level security | Separate schemas in one database | Fully separate databases |
| Cost per tenant | Lowest | Moderate | Highest |
| Migrations | One run for everyone | Per schema; needs tooling | Per database; needs orchestration |
| Good fit for | SMB products with many small tenants | Mid-market, moderate tenant counts | Enterprise or regulated customers |
Product preview
Screens your customers and your own team use
Illustrative screens for a typical B2B SaaS product; the modules and plan names follow your roadmap.
Customer web app. Customer admins see seats, usage against plan limits and the next invoice, so an upgrade feels expected rather than a surprise on the bill. 
Customer web app. Enterprise customers connect their identity provider and switch on automatic user provisioning themselves, which shortens security reviews and onboarding. 
Mobile companion app. A companion app built on the same API lets managers approve on the move, while business rules stay in one place on the server. 
Internal admin console. Your support and finance teams see every tenant's plan, hosting region, billing state and usage, and can help customers without browsing their data.
Illustrative preview
Sample screens: names, prices and figures are examples, not client data.
Work
A related sample project
Business software
Illustrative sampleFleet & dispatch management SaaS
An illustrative SaaS for businesses running their own vehicles: live dispatch on a map, driver proof of delivery and per-trip billing for each customer.
- Transportation
- SaaS
Runs on
- Web app
- Android
- iOS
- Cross-platform
Built with
- React
- React Native
- Node.js
- PostgreSQL
- Redis
- +1 more
Cost drivers
What drives SaaS engineering cost
Tenancy model
Per-tenant schemas or databases add provisioning, migration tooling and infrastructure.
Billing complexity
Metering, mid-cycle seat changes, multi-currency pricing and GST invoicing add work.
Enterprise features
SSO, SCIM, audit logs and data export often form a separate phase.
Integrations
Each native integration has its own auth, limits and sync edge cases.
Estimates are written from your scope, with the effort and assumptions behind each line item.
How pricing worksServices
Services for this industry
The design and engineering services our in-house team combines on projects in this sector.
SaaS development
Multi-tenant SaaS products with subscription billing, team roles, onboarding and usage analytics, from first MVP to paying customers.
Web application development
Browser-based products, customer portals, dashboards and internal tools, built on clean data models with secure roles and integrations.
API development
Secure, documented REST and GraphQL APIs, plus integrations that connect your apps to payment, logistics, GST, messaging and business systems.
UI/UX design
Product design for web and mobile apps: research, user flows, wireframes, prototypes and design systems that engineers can build from.
Admin panel development
Back-office dashboards built around your team's daily tasks: order queues, approvals, catalogue management, payouts, reports and audit logs.
AI app development
AI features and AI-first apps built on model APIs, retrieval over your own data, workflow automation or custom ML, with evaluation and human review.
Mobile app development
Native and cross-platform Android and iOS apps, from first release through regular store updates, built by our in-house designers and engineers.
FAQ
Frequently asked questions
Can you take over a SaaS codebase built by another team?
Usually, yes. We start with a review, typically one to two weeks, of architecture, tests, dependencies, security gaps and tenant isolation. You get a written report with ranked risks and a recommendation: extend, refactor specific modules or rebuild parts. We avoid full rewrites unless the code blocks the roadmap, because rewrites stall feature work.
Should an Indian SaaS company bill through Stripe or Razorpay?
It depends on where customers pay. Razorpay suits Indian customers, with UPI AutoPay, card e-mandates and rupee settlement. For overseas customers, teams use Stripe (subject to its onboarding for Indian entities) or a merchant-of-record service, and many run both behind one billing layer. Your CA should confirm GST and export paperwork.
Can our SaaS product host customer data in India?
Yes. We usually deploy to AWS regions in India (Mumbai or Hyderabad), with separate regional deployments for other markets. Banks, insurers or healthcare customers may want a dedicated instance. Residency covers backups, logs, email and analytics tools too, so we map every copy of customer data, not just the database.
When should a SaaS product add SSO and audit logs?
Typically at your first mid-market or enterprise deal, when a security questionnaire asks for SAML or OIDC sign-on, user provisioning, audit trails and role controls. Designing the audit and role data model early is cheap; SSO setup screens can wait for a customer who needs them. We scope this as a separate phase.
Do you build mobile apps for SaaS products too?
Yes. Most B2B SaaS lives in the browser, but field teams and approvers often need a mobile companion for approvals, alerts or offline work. We usually build it in Flutter or React Native on the web app's API, so business rules live in one place. A progressive web app suffices when mobile use is light.
Next step
Bring us your roadmap, not just requirements
Tell us what customers ask for; we will estimate the next phase line by line.