The SaaS development company founders hire when the MVP has to ship
Horizon is a SaaS development company delivering full-stack SaaS applications from validated MVP to Series-A-ready platform. SaaS development services covering product, engineering, multi-tenancy, billing, auth and infrastructure — one team, fixed milestones, working software every two weeks.
What you gain working with Horizon
Founders' SaaS development company, not a body shop
Small senior team owning your SaaS end to end: product thinking, technical architecture, delivery. No account managers, no offshored juniors, no ticket-farming — the people in the discovery call are the people shipping the code.
Multi-tenant and billing done right
SaaS application development means multi-tenancy, subscription billing, seats, roles, audit logs and admin tooling from day one — the plumbing that turns a webapp into a business you can actually charge for.
Ship in weeks, learn in production
SaaS development services delivered in fixed 2-week milestones with a working, deployable build at every checkpoint. You get real user feedback while competitors are still writing PRDs.
Built to scale, not to rewrite
Modern stack (TypeScript, Postgres, edge runtimes) with observability, tests and CI/CD from day one. The MVP you launch is the same codebase you scale to 10,000 customers — not a prototype you throw away at Series A.
Everything you get in the package
- Product discovery, PRD and technical architecture
- UX/UI design tailored to your users
- Full-stack SaaS application development (web + mobile as needed)
- Multi-tenant data model, auth, RBAC and billing (Stripe)
- Admin panel, analytics and observability
- CI/CD, staging + production infrastructure, monitoring
SaaS development
Full-stack SaaS development: multi-tenant, billing, auth, admin — from MVP to scale.
from €1,998
Request a tailored quoteFrequently asked questions
What does a SaaS development company do?
A SaaS development company builds and ships subscription software products end to end — product discovery, design, engineering, infrastructure, launch and often ongoing development. Unlike a generic dev shop, a proper SaaS development company knows the specific plumbing (multi-tenancy, billing, auth, admin) that turns a webapp into a scalable business.
Do you build MVPs or full products?
Both. Most engagements start with a validated MVP in 6–12 weeks — the smallest thing your first paying customers will use. From there we ship features in 2-week milestones and grow the product without a rewrite. Same team, same codebase.
How much do SaaS development services cost?
A validated SaaS MVP typically runs between $30k and $80k depending on scope. Full production platforms (custom integrations, mobile apps, complex data models) range from $80k to $250k. Fixed milestones and fixed price per milestone — no open-ended time-and-materials.
What stack do you use for SaaS application development?
TypeScript everywhere — React or TanStack Start on the front-end, Node/edge runtimes on the back-end, PostgreSQL for data, Stripe for billing, deployed on Cloudflare/Vercel/AWS depending on requirements. We pick the boring, proven stack that a hire next year can actually maintain.
Do I own the code and IP?
Yes. Full source code, documentation and infrastructure access at handover. No lock-in — you can continue development with our team, an in-house hire, or another agency, whichever makes sense.
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July 2026
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