SaaS development company

A SaaS development company builds a product that many separate customers use from one running system, each seeing only their own data. Apoliums builds the parts that make that possible: tenant isolation, sign-up and onboarding, subscription billing, usage limits, an admin console, and the deploy pipeline behind all of it.

The difference from a normal web application is that the customer, not you, is the one who creates the account, invites their team and starts paying. Every part of the system has to work without an operator in the loop.

Apoliums quotes SaaS development per project after scoping. The cost drivers are the tenancy model, the number of user roles inside a tenant, whether you need SSO and audit logs for enterprise buyers, how complex the pricing is, and whether the product must integrate with systems your customers already run.

The quote itemises those drivers and names what we would cut to reach a paying customer sooner. Billing, onboarding and the admin console are always in the first release, because a SaaS product without them cannot take money.

A first sellable release from Apoliums usually takes twelve to twenty weeks. That covers sign-up, tenant isolation, the core product loop, subscription billing and an admin console — the minimum a SaaS product needs before a stranger can subscribe without you being involved.

A staging environment goes up in the first week and is updated weekly, so you can put the product in front of design partners long before the public launch date.

Apoliums isolates tenants at the database, not in application code. The default is PostgreSQL row-level security, which fails closed: a query with no tenant context returns nothing rather than everything. Caches, queues and background jobs are tenant-scoped by the same key.

Isolation gets its own test suite that tries to read across tenants through every route, and that suite runs on every commit. Where a client's compliance obligations demand it, we use schema-per-tenant or a separate database instead.

Yes. Apoliums converts single-tenant applications into multi-tenant products, starting with an audit of every query, cache key and background job that assumes one customer. That audit produces the migration plan, including how existing customer data becomes the first tenants.

The conversion runs behind a flag with the original deployment still serving current customers, so the change is verified against real data before anyone is moved.

Apoliums recommends Stripe when you sell internationally and Razorpay when your customers are primarily in India, because the deciding factors are the payment methods your buyers already use and the currencies you must settle in. Both are integrated with verified webhooks and a ledger that reconciles against the gateway.

Billing logic is kept behind an internal interface, so changing provider later is a contained piece of work rather than a rewrite of the subscription system.