Sequator
Web app development SaaS · Platforms · APIs

Web apps with
operating weight.

Custom web app development for SaaS products, customer portals and internal systems that need to survive real users.

When to call us

The point where a website becomes software.

SaaS and web app work needs product engineering: state, roles, billing, data models, background jobs and deployment discipline.

SaaS

You are turning a workflow into a product.

We build the platform layer: onboarding, tenants, roles, subscriptions, data flows and admin surfaces.

Portal

Customers need self-service.

We build secure portals, dashboards and operational interfaces around your existing systems.

Internal

The spreadsheet became infrastructure.

We replace fragile manual operations with focused internal tools and APIs that your team can maintain.

Deliverables

What we build.

Product

SaaS applications

Multi-tenant products, onboarding, roles, billing, analytics and production support.

Ops

Internal tools

Admin systems, workflow tools, reporting surfaces and customer operations.

Stack

Frontend and backend

React, Astro, Next.js, APIs, database design, queues, integrations and deployment.

Quality

Performance and handover

Fast pages, readable code, test coverage, runbooks and infrastructure documentation.

Process
01

Map the system boundary.

We define what the web app owns, what it integrates with and which workflows should stay out.

02

Build the load-bearing paths first.

Auth, data model, core workflow and deployment come before decorative product surface.

03

Prepare for the next team.

We leave architecture notes, tests, runbooks and a backlog ordered by product risk.

FAQ

Web app questions.

Do you build SaaS MVPs?
Yes, but we treat MVP as the first maintainable product version, not a throwaway prototype.
Can you work with our existing stack?
Usually. We first check whether the stack is a constraint, a risk or just a preference.
Do you handle backend work?
Yes. Web app development includes APIs, data modeling, auth, background work, integrations and deployment.
Start

Have a product workflow to turn into software?

Send the workflow and the constraints. We will find the smallest system worth building.