Custom SaaS Platform Development

We build SaaS products that are ready to sell — multi-tenant, billed, role-managed, and deployed. Not a prototype. A product your first 100 customers can pay for on day one.

Discuss your SaaS idea See Our Cases

Custom SaaS platform development is different from a website or MVP: multi-tenancy, subscription billing, role-based access, customer-facing dashboards, API surface for integrations. Codevia has shipped SaaS products in agri, logistics, and habit-tracking verticals. We are a SaaS development agency Ukraine — this is our primary focus, not a side offering.

What We Build Into Every SaaS

Multi-tenant data isolation (schema-per-tenant or row-level security)
Stripe or Paddle subscription billing
RBAC — owner/admin/member with customizable permissions
Audit logs for all critical actions
Internal admin panel for operations
REST or gRPC API for integrations
CI/CD pipeline with automated testing
Monitoring and alerting configuration

Who This Is For

Domain Experts Spinning Out SaaS

Consulting IP becoming a repeatable product. SaaS platform development in agri, logistics, or any vertical where your expertise is the moat.

B2B Companies With Manual Workflows

A repeatable process currently done by hand or via spreadsheets. We turn it into a B2B SaaS development cost-effective product your clients pay for monthly.

ISVs Replacing Legacy Desktop Software

A desktop product that needs a cloud transition. We build the SaaS equivalent with subscription billing and multi-user support.

Architecture Approach

Clean Architecture on the .NET backend — separation of business logic, infrastructure, and presentation layers. React or Next.js for the frontend, Flutter for a mobile companion if needed. Clean Architecture matters for SaaS longevity: a product built correctly is easy to extend with new features without rewriting existing logic.

Process

01
Architecture design
We define the multi-tenant data model, API surface, auth strategy, and billing integration before writing a line of product code.
02
Core infrastructure build
Auth system, tenant isolation, role-based access control, billing integration. The foundation everything else sits on.
03
Feature development
Core product features built sprint by sprint with weekly demos. Jira board open to you throughout.
04
Admin panel and ops tooling
Internal admin for tenant management, billing operations, and support. Essential for operating the SaaS post-launch.
05
QA + deploy + launch
End-to-end testing, CI/CD pipeline setup, production deployment, monitoring configuration.

Technologies

.NET 8
PostgreSQL
Redis
React
Next.js
Flutter
TypeScript
Azure
AWS
Stripe
Firebase Analytics
Sentry

Selected Cases

AgroCertify

Certification management SaaS for the Ukrainian agricultural market. Flutter mobile app + .NET backend + web dashboard.

Read the case study

Habit Tracker

Consumer SaaS for habit tracking. Full product from architecture to App Store.

Timelines and Pricing

Project type	Timeline	Budget
SaaS MVP (core auth + 1 tenant flow + billing)	10–16 weeks	from $8,000
Full production SaaS (RBAC, admin panel, audit logs, CI/CD)	4–6 months	from $15,000

SaaS web app development agency pricing is scope-based after discovery. Staged payment.

Frequently Asked Questions

We use schema-per-tenant or row-level security depending on your data isolation requirements and scale. For most B2B SaaS builds we recommend a single database with row-level isolation and tenant context injected at the middleware layer — it is simpler to operate and scales well.

Stripe for international markets — best API, best documentation, wide market coverage. LiqPay or Fondy for Ukraine. Paddle for software VAT compliance in the EU. We integrate whichever fits your market.

Yes. We have done this for desktop software companies converting to SaaS and for internal tools becoming customer-facing products. Migration scope depends heavily on how the existing code is structured — we assess before quoting.

You do. The database is yours, deployed in your cloud account. We do not retain copies. The architecture is documented so your team or any future developer can operate it.

Yes. We offer performance audits, infrastructure scaling engagements, and a monthly support retainer. We do not disappear after launch — the same team that built the product is available for ongoing work.

Ready to build your SaaS platform?

Tell us about your SaaS idea — we will scope it in a free discovery call.